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Code d'Examen: 70-523-VB
Nom d'Examen: Microsoft (UPG:Transition MCPD.NET Frmwrk 3.5 Web Dev to 4 Web Dev)
Questions et réponses: 100 Q&As

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Code d'Examen: 070-521
Nom d'Examen: Microsoft (Upgrade: Transition Your MCPD Windows Developer 3.5, or Enterprise Application Developer 3.5, Skills to MCPD Windows Developer 4)
Questions et réponses: 115 Q&As

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NO.1 You are creating a Windows Communication Foundation (WCF) service that implements operations in a
RESTful manner. You need to add a delete operation.
You implement the delete method as follows.
void DeleteItems(string id);
You need to configure WCF to call this method when the client calls the service with the HTTP DELETE
operation.
What should you do?
A.Add the WebInvoke(UriTemplate = "/Items/{id}", Method="DELETE") attribute to the operation.
B.Add the HttpDelete attribute to the operation.
C.Replace the string parameter with a RemovedActivityAction parameter.
D.Replace the return type with RemovedActivityAction.
Answer: A

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NO.2 You are creating a Windows Communication Foundation (WCF) service based on WSHttpBinding.
New audit requirements dictate that callers must be authenticated on every call to ensure that their
credentials have not been revoked.
You need to ensure that the service will not cache the security request token.
What should you do?
A.Apply a ServiceBehavior attribute to the service implementation class with the InstanceContextMode
property set to Single.
B.In the message security configuration, change clientCredentialType from IssuedToken to UserName.
C.In the message security configuration, set establishSecurityContext to false.
D.At the end of every operation, call the SessionStateUtility.RaiseSessionEnd method.
Answer: C

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NO.3 </serviceBehaviors>

NO.4 A Windows Communication Foundation (WCF) client uses the following service contract. (Line
numbers are included for reference only.)
01 [ServiceContract]
02 public interface IService
03 {
04 [OperationContract]
05 string Operation1();
06 [OperationContract]
07 string Operation2();
08 }
You need to ensure that all calls to Operation1 and Operation2 from the client are encrypted and signed.
What should you do?
A.Set the ProtectionLevel property in line 01 to EncryptAndSign.
B.Set the ProtectionLevel property in line 04 and line 06 to Sign.
C.Add a SecurityCriticalAttribute for each operation.
D.Add a SecuritySafeCriticalAttribute for each operation.
Answer: A

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NO.5 You are creating a Windows Communication Foundation (WCF) service. You do not want to expose the
internal implementation at the service layer.
You need to expose the following class as a service named Arithmetic with an operation named Sum.
public class Calculator
{
public int Add(int x, int y)
{
}
}
Which code segment should you use?
A.[ServiceContract(Namespace="Arithmetic")]
public class Calculator
{
[OperationContract(Action="Sum")]
public int Add(int x, int y)
{
...
}
}
B.[ServiceContract(ConfigurationName="Arithmetic")]
public class Calculator
{
[OperationContract(Action="Sum")]
public int Add(int x, int y)
{
...
}
}
C.[ServiceContract(Name="Arithmetic")]
public class Calculator
{
[OperationContract(Name="Sum")]
public int Add(int x, int y)
{
...
}
}
D.[ServiceContract(Name="Arithmetic")]
public class Calculator
{
[OperationContract(ReplyAction="Sum")]
public int Add(int x, int y)
{
...
}
}
Answer: C

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NO.6 A Windows Communication Foundation (WCF) service is responsible for transmitting XML documents
between systems. The service has the following requirements:
It must minimize the transmission size by attaching the XML document as is without using escape
characters or base64 encoding.
It must interoperate with systems that use SOAP but are not built on the .NET platform.
You need to configure the service to support these requirements.
Which message encoding should you use?
A.Binary message encoding
B.MTOM (Message Transmission Optimization Mechanism) message encoding
C.Text message encoding with message version set to none
D.Text message encoding with message version set to SOAP 1.2
Answer: B

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NO.7 You are moving a Windows Communication Foundation (WCF) service into production.
You need to be able to monitor the health of the service. You only want to enable all performance counter
instances exposed by the ServiceModelService 4.0.0.0 counter group.
Which element should you add to the system.serviceModel section in the application configuration file?
A.<diagnostics performanceCounters="ServiceOnly" />
B.<diagnostics wmiProviderEnabled="true" performanceCounters="Off" />
C.<diagnostics performanceCounters="All" />
D.<diagnostics wmiProviderEnabled="true" />
Answer: A

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NO.8 A Windows Communication Foundation (WCF) service has the following contract.
[ServiceContract(Namespace="http://contoso.com")]
public interface IShipping
{
[OperationContract]
string DoWork(int id);
}
This is one of several service contracts hosted by your application. All endpoints use SOAP 1.2 bindings
with WS-Addressing 1.0. The System.ServiceModel.MessageLogging trace source in the
system.diagnostics configuration section is configured with one listener.
You need to make sure that only the messages that are returned from the DoWork operation are logged.
Which XML segment should you add to the system.serviceModel/diagnostics/messageLogging/filters
configuration element?
A.<add xmlns:addr="http://www.w3.org/2005/08/addressing">
//addr:Action[text() =
'http://contoso.com/IShipping/DoWorkResponse']
</add>
B.<add xmlns:soap="http://www.w3.org/2003/05/soap-envelope"> //soap:Action[text() =
'http://contoso.com/IShipping/DoWorkResponse']
</add>
C.<add xmlns:addr="http://www.w3.org/2005/08/addressing">
//addr:Action[text() =
'http://contoso.com/IShipping/DoWork']
</add>
D.<add xmlns:soap="http://www.w3.org/2003/05/soap-envelope"> //soap:Action[text() =
'http://contoso.com/IShipping/DoWork']
</add>
Answer: A

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NO.9 You are creating a Windows Communication Foundation (WCF) service to process orders. The data
contract for the order is defined as follows.
[DataContract]
public class Order
{
...
[DataMember]
public string CardHolderName { get; set; }
[DataMember]
public string CreditCardNumber { get; set; }
}
You have the following requirements:
Enable the transmission of the contents of Order from the clients to the service.
Ensure that the contents of CreditCardNumber are not sent across the network in clear text.
Ensure that the contents of CreditCardNumber are accessible by the service to process the order.
You need to implement the service to meet these requirements.
What should you do?
A.Add a DataProtectionPermission attribute to the CreditCardNumber property and set the ProtectData
property to true.
B.Convert the DataContract to a MessageContract and set the ProtectionLevel property to
EncryptAndSign.
C.Change the data type of CreditCardNumber from string to SecureString.
D.Implement the CreditCardNumber property getter and setter. In the setter, run the value of the
CreditCardNumber through the MD5CryptoServiceProvider class TransformBlock method.
Answer: B

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NO.10 A Windows Communication Foundation (WCF) service has a callback contract. You are developing a
client application that will call this service.
You must ensure that the client application can interact with the WCF service.
What should you do?
A.On the OperationContractAttribute, set the AsyncPattern property value to true.
B.On the OperationContractAttribute, set the ReplyAction property value to the endpoint address of the
client.
C.On the client, create a proxy derived from DuplexClientBase<TChannel>.
D.On the client, use GetCallbackChannel<T>.
Answer: C

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NO.11 You are building a client for a Windows Communication Foundation (WCF) service.
You need to create a proxy to consume this service.
Which class should you use?
A.ChannelFactory<TChannel>
B.ServiceHost
C.ClientRuntime
D.CommunicationObject
Answer: A

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NO.12 A Windows Communication Foundation (WCF) application uses a data contract that has several data
members.
You need the application to throw a SerializationException if any of the data members are not present
when a serialized instance of the data contract is deserialized.
What should you do?
A.Add the KnownType attribute to the data contract. Set a default value in each of the data member
declarations.
B.Add the KnownType attribute to the data contract. Set the Order property of each data member to
unique integer value.
C.Set the EmitDefaultValue property of each data member to false.
D.Set the IsRequired property of each data member to true.
Answer: D

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NO.13 You are adding a Windows Communication Foundation (WCF) service to an existing application. The
application is configured as follows. (Line numbers are included for reference only.)
01?<configuration>
02 <system.serviceModel>
03 <services>
04 <service name="Contoso.Sales.StockService"
05 behaviorConfiguration="MetadataBehavior">
06 <host>
07 <baseAddresses>
08 <add
baseAddress="http://contoso.com:8080/StockService" />
09 </baseAddresses>
10 </host>
11 </service>
12 </services>
13 <behaviors>
14 <serviceBehaviors>
15 <behavior name="MetadataBehavior">
16 </behavior>

NO.14 A WCF service code is implemented as follows. (Line numbers are included for reference only.)
01 [ServiceContract]
02 [ServiceBehavior(InstanceContextMode =
03 InstanceContextMode.Single)]
04 public class CalculatorService
05 {
06 [OperationContract]
07 public double Calculate(double op1, string op, double op2)
08 {
...
24 }
25 }
You need to decrease the response time of the service.
What are two possible ways to achieve this goal? (Each correct answer presents a complete solution.
Choose two.)
A.Change the service behavior to the following.
[ServiceBehavior(
InstanceContextMode = InstanceContextMode.Single,
ConcurrencyMode = ConcurrencyMode.Multiple)]
B.Change the service behavior to the following.
[ServiceBehavior(InstanceContextMode = InstanceContextMode.PerCall)]
C.Require the clients use threads, the Parallel Task Library, or other mechanism to issue service calls in
parallel.
D.Require the clients to use async operations when calling the service.
Answer: AB

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NO.15 Your Windows Communication Foundation (WCF) client application uses HTTP to communicate
withthe service.
You need to enable message logging and include all security information such as tokens and nonces in
logged messages.
What should you do?
A.In the application configuration file, add the logKnownPii attribute to the message logging diagnostics
source and set the value of the attribute to true.
Generate the ContosoService class using the Add Service Reference wizard.
Add a reference to System.ServiceModel.Routing.dll.
Add the following code segment.
ContosoService client = new ContosoService();
SoapProcessingBehavior behavior = new SoapProcessingBehavior(); behavior.ProcessMessages = true;
client.Endpoint.Behaviors.Add(behavior);
B.In the application configuration file, add the following XML segment to the system.serviceModel
configuration section group.
<diagnostics>
<messageLogging logMessagesAtTransportLevel="true"
logEntireMessage="true" />
</diagnostics>
C.In the machine configuration file, add the following XML segment to the system.serviceModel
configuration section.
<machineSettings enableLoggingKnownPii="true" />
Generate the ContosoService class using the Add Service Reference wizard.
Add the following code segment.
ContosoService client = new ContosoService();
client.Endpoint.Behaviors.Add(new CallbackDebugBehavior(true));
D.In the machine configuration file, add the following XML segment to the system.serviceModel
configuration section.
<machineSettings enableLoggingKnownPii="true" />
In the application configuration file, add the logKnownPii attribute to the message logging diagnostics
source and set the value of the attribute to true.
In the application configuration file, add the following XML segment to the system.serviceModel
configuration section group.
<diagnostics>
<messageLogging logMessagesAtTransportLevel="true"/>
</diagnostics>
Answer: D

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NO.16 You are consuming a Windows Communication Foundation (WCF) service in an ASP.NET Web
application. The service interface is defined as follows.
[ServiceContract]
public interface ICatalog
{
[OperationContract]
[WebGet(UriTemplate = "/Catalog/Items/{id}",
ResponseFormat = WebMessageFormat.Json)]
string RetrieveItemDescription(int id);
}
The service is hosted at /Catalog.svc.
You need to call the service using jQuery to retrieve the description of an item as indicated by a variable
named itemId.
Which code segment should you use?
A.$.get(String.format("/Catalog.svc/Catalog/Items/?id={0}", itemId) null,
function (data) {
...
},
"javascript");
B.$.get(String.format("/Catalog.svc/Catalog/Items/{0}", itemId), null,
function (data) {
...
},
"json");
C.$.get(String.format("/Catalog.svc/Catalog/Items/{0}", itemId), null,
function (data) {
...
},
"xml");
D.$.get(String.format("/Catalog.svc/Catalog/Items/id={0}", itemId), null,
function (data) {
...
},
"json");
Answer: B

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NO.17 </behaviors>
...
You need to configure the service to publish the service metadata.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)
A.Add the following XML segment between lines 10 and 11.
<endpoint?address=""
binding="mexHttpBinding"
contract="IMetadataExchange"
/>
B.Add the following XML segment between lines 10 and 11.
<endpoint?address=""
binding="basicHttpBinding"
contract="IMetadataExchange"
/>
C.Add the following XML segment between lines15 and 16.
<serviceDiscovery>
<announcementEndpoints>
<endpoint address=""/>
</announcementEndpoints>
</serviceDiscovery>
D.Add the following XML segment between lines 15 and 16
<serviceMetadata httpGetEnabled="true"/>
Answer: AD

Microsoft   070-521   070-521
17.Four Windows Communication Foundation (WCF) services are hosted in Microsoft Internet
Information Services (IIS). No behavior configuration exists in the web.config file.
You need to configure the application so that every service and endpoint limits the number of concurrent
calls to 50 and the number of concurrent sessions to 25.
Which XML segment should you add to the system.serviceModel configuration section of the web.config
file?
A.<behaviors>
<serviceBehaviors>
<behavior name="*">
<serviceThrottling maxConcurrentCalls="50" maxConcurrentSessions="25"/> </behavior>
</serviceBehaviors>
</behaviors>
B.<behaviors>
<serviceBehaviors>
<behavior name="default">
<serviceThrottling maxConcurrentCalls="50" maxConcurrentSessions="25"/> </behavior>
</serviceBehaviors>
</behaviors>
C.<behaviors>
<serviceBehaviors>
<behavior name="">
<serviceThrottling maxConcurrentCalls="50" maxConcurrentSessions="25"/> </behavior>
</serviceBehaviors>
</behaviors>
D.<behaviors>
<serviceBehaviors>
<behavior name="ALL">
<serviceThrottling maxConcurrentCalls="50" maxConcurrentSessions="25"/> </behavior>
</serviceBehaviors>
</behaviors>
Answer: C

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18.The endpoint of a Windows Communication Foundation (WCF) service uses basicHttpBinding for its
binding. Your company's policies have changed to require that messages not be sent in clear text.
You must ensure that all messages are encrypted when traveling across the network.
What should you do?
A.Set the ProtectionLevel property on the service contract and update the binding attribute in the endpoint
element of the configuration file to wsHttpBinding.
B.Set the ProtectionLevel property on the service contract and update the bindingConfiguration attribute
in the endpoint element of the configuration file to webHttpBinding.
C.Set the PrincipalPermissionAttribute on the service contract and update the binding attribute in the
endpoint element of the configuration file to wsHttpBinding.
D.Set the PrincipalPermissionAttribute on the service contract and update the bindingConfiguration
attribute in the endpoint element of the configuration file to wsHttpBinding.
Answer: A

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NO.18 You are developing a Windows Communication Foundation (WCF) service that reads messages from
a public non-transactional MSMQ queue.
You need to configure the service to read messages from the failed-delivery queue.
Which URI should you specify in the endpoint configuration settings of the service?
A.net.msmq://localhost/msmq$;FailedMessages
B.net.msmq://localhost/msmq$;DeadLetter
C.net.msmq://localhost/system$;DeadXact
D.net.msmq://localhost/system$;DeadLetter
Answer: D

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NO.19 You are developing an application to update a user' s social status. You need to consume the service
using Windows Communication Foundation (WCF).
The client configuration is as follows.
<system.serviceModel>
<bindings>
<webHttpBinding>
<binding name="SocialConfig">
<security mode="TransportCredentialOnly">
<transport clientCredentialType="Basic"
?realm="Social API" />
</security>
</binding>
</webHttpBinding>
</bindings>
<client>
<endpoint address="http://contoso.com"
binding="webHttpBinding"
bindingConfiguration="SocialConfig"
contract="ISocialStatus"
name="SocialClient" />
</client>
</system.serviceModel>
The service contract is defined as follows.
[ServiceContract]
public interface ISocialStatus
{
[OperationContract]
[WebInvoke(UriTemplate =
"/statuses/update.xml?status={text}")]
void UpdateStatus(string text);
}
Which code segment should you use to update the social status?
A.using (WebChannelFactory<ISocialStatus> factory =
new WebChannelFactory<ISocialStatus>("SocialClient"))
{
factory.Credentials.UserName.UserName = user.Name;
factory.Credentials.UserName.Password = user.Password;
ISocialStatus socialChannel = factory.CreateChannel();
socialChannel.UpdateStatus(newStatus);
}
B.using (ChannelFactory<ISocialStatus> factory =
new WebChannelFactory<ISocialStatus>(typeof(ISocialStatus))) {
factory.Credentials.UserName.UserName = user.Name;
factory.Credentials.UserName.Password = user.Password;
ISocialStatus socialChannel = factory.CreateChannel();
socialChannel.UpdateStatus(newStatus);
}
C.using (ChannelFactory<ISocialStatus> factory =
new ChannelFactory<ISocialStatus>("POST"))
{
factory.Credentials.Windows.ClientCredential.UserName =
user.Name;
factory.Credentials.Windows.ClientCredential.SecurePassword.
SetAt(0, Convert.ToChar(user.Password));
ISocialStatus socialChannel = factory.CreateChannel();
socialChannel.UpdateStatus(newStatus);
}
D.using (WebChannelFactory<ISocialStatus> factory =
new WebChannelFactory<ISocialStatus>(typeof(ISocialClient))) {
factory.Credentials.Windows.ClientCredential.UserName =
user.Name;
factory.Credentials.Windows.ClientCredential.SecurePassword.
SetAt(0, Convert.ToChar(user.Password));
ISocialStatus socialChannel = factory.CreateChannel();
socialChannel.UpdateStatus(newStatus);
}
Answer: A

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NO.20 You are creating a Windows Communication Foundation (WCF) service that is implemented as follows.
(Line numbers are included for reference only.)
01 [ServiceContract]
02 [ServiceBehavior(IncludeExceptionDetailsInFaults = true)]
03 public class OrderService
04 {
05 [OperationContract]
06 public void SubmitOrder(Order anOrder)
07 {
08 try
09 {
10 ...
11 }
12 catch(DivideByZeroException ex)
13 {
15 }
16 }
17 }
You need to ensure that the stack trace details of the exception are not included in the error information
sent to the client.
What should you do?
A.Replace line 14 with the following line.
throw;
B.Replace line 14 with the following line.
throw new FaultException<Order>(anOrder, ex.ToString());
C.After line 05, add the following line.
[FaultContract(typeof(FaultException<Order>))]
Replace line 14 with the following line.
throw ex;
D.After line 05, add the following line.
[FaultContract(typeof(FaultException<Order>))]
Replace line 14 with the following line.
throw new FaultException<Order>(anOrder, "Divide by zero exception");
Answer: D

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Code d'Examen: 70-169
Nom d'Examen: Microsoft (TS: Windows Small Business Server 2011 Standard, Configuring)
Questions et réponses: 55 Q&As

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NO.1 You are the administrator for a network that runs Windows Small Business Server (SBS) 2011 Standard.
The Windows Small Business Server 2011 Standard network includes a branch office. Users at this
branch office connect to the network by using either individual VPN connections or by using Remote Web
Access (RWA). The branch office adds four new users and computers. You need to join the four new
computers to the SBS domain. What should you do on each of the new computers?
A. Create a VPN connection, and use http://connect.
B. Create a VPN connection, and run the netdom command.
C. Download the Certificate Distribution package by using RWA. Import the certificate.
D. Download the Certificate Distribution package by using RWA. Run the InstallCertificate
application.
Answer: B

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NO.2 You are the administrator for a network that runs Windows Small Business Server (SBS) 2011 Standard.
You need to ensure that User1 can manage standard user accounts. You must achieve this goal without
granting User1 other administrative permissions. What should you do.?
A. In Active Directory Users and Computers, add User1 to the Administrators Group.
B. In Active Directory Users and Computers, add User1 to the Account Operators Group.
C. In the Windows Small Business Server 2011 Standard Console, add User1s account to the Windows
SBS 2011 Administrators Group.
D. In the Windows Small Business Server 2011 Standard Console, change User1s user role from
Standard User to Network Administrator.
Answer: B

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NO.3 You are the administrator for a network that runs Windows Small Business Server (SBS) 2011 Standard.
You create an email-enabled security group named Accounting. You add the user accounts of all
accounting employees and their supervisor to this security group. You need to ensure that all email
messages that are sent to the Accounting security group are retained indefinitely and that all users in the
group can access the messages. What should you do?
A. Enable journaling of all email messages on the Exchange server.
B. Create a public folder and grant the Owner permission level to the Accounting group.
C. Modify the Accounting group properties to place messages in the Accounting public folder.
D. Modify the accounting supervisor's mailbox properties and supply an external delivery address.
Answer: C

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NO.4 You are the administrator for a network that runs Windows Small Business Server (SBS) 2011 Standard.
The Windows Small Business Server 2011 Standard network has a shared printer that is dedicated to
invoice printing. Only authorized users should be able to print to this printer. You create a security group
named Invoice Printing and add the authorized users to this group. You need to ensure that only the
Invoice Printing group can print to the invoice printer. What should you do?
A. Grant the Invoice Printing group the Print, Manage this printer, and Manage documents
permissions on the invoice printer.
B. Grant the Invoice Printing group the Print permission, only. Deny the Everyone group the Print
permission on the invoice printer.
C. Add the Invoice Printing security group to the Standard User role. Grant the Invoice Printing group the
Print permission.
D. Create a new user role based on Standard User, and add the Invoice Printing security group to the role.
Grant the Invoice Printing group the Print permission, and remove the Everyone group.
Answer: D

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NO.5 You are the off-site administrator for a network that runs Windows Small Business Server (SBS) 2011
Standard. An on-site user named User1 requires access to the Windows SBS 2011 Standard server
Desktop in order to assist you with your administrative tasks. User1 is currently assigned the Standard
user role. User1 reports that she is unable to log on to the Windows SBS 2011 Standard server, either
locally or remotely. You need to ensure that User1 can access the Windows SBS 2011 Standard server
Desktop both locally and remotely. What should you do?
A. Add the User1 account to the Windows SBS Administrators group.
B. Add the User1 account to the built-in Server Operators group. Create a new user role based on the
User1 account.
C. Change the user role of the User1 account from Standard User to Network Administrator.
D. Change the user role of the User1 account from Standard User to Standard User with
administration links
Answer: C

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Code d'Examen: 1Z0-048
Nom d'Examen: Oracle (Oracle Database 10g R2: Administering RAC)
Questions et réponses: 150 Q&As

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NO.1 Your company has a combination of high availability and scalability requirements that need to
be addressed, and RAC has been discussed as a solution. There are a mix of "off-the-shelf"
software products and homegrown applications currently in use in your environment that run on
single-instance Oracle databases. You have been asked by the IT director to provide an impact
analysis report to help assess the impact on applications when migrating to RAC. Which three are
among the areas that should be examined for performance impact and application functionality
impact or for both? (Choose three.)
A.applications that use large parallel full table scans
B.applications that truncate tables in a data warehouse process
C.three-tier applications that use application global context variables
D.client/server type applications that use application local context variables
E.applications that access small tables using the same index occasionally
F.applications that use SQL profiles created by the ATO optimizer in the SQL Tuning Advisor
Correct:A B C

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NO.2 After the cluster database has been successfully created, several postinstallation tasks should
be completed. Identify three of them. (Choose three.)
A.Create the ASM instance.
B.Back up the root.sh script.
C.Initialize the cluster backup procedure.
D.Set up additional required user accounts.
E.Verify the Enterprise Manager/Oracle Cluster Registry configuration by running srvctl config database
-d db_name.
Correct:B D E

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NO.3 After a power failure, you noticed that one of your cluster database instances did not start
automatically, whereas all other instances came up successfully. What would you do to determine
the precise cause for the instance startup failure? (Choose three.)
A.Check the resource state by using the CRS_STAT command.
B.Check for OCR corruptions by using the OCRCHECK command.
C.Check the alert.log file that belongs to the instance that did not start.
D.Check the alert.log file that belongs to the Oracle Clusterware software.
E.Check if the Oracle Clusterware is functional by using the CRSCTL command.
F.Reboot the node where the failing instance resides to check if the problem is persistent.
G.Enable extra debugging in the Oracle Clusterware software by using the CRSCTL command.
Correct:A C D

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NO.4 You have attended a user group presentation on RAC and based on what you have learned you
feel that your company would benefit from having the RAC option to meet its Oracle database
requirements in several ways. Your manager does not know much about RAC and asks you to
create a presentation to the team explaining RAC, and whether it should be implemented in your
installation. Which three statements explain the benefits and implications of RAC? (Choose three.)
A.RAC alone would not help protect from human errors.
B.RAC would increase availability in the event of data failures.
C.RAC would increase availability in the event of a network failure.
D.RAC alone would increase availability when doing release upgrades.
E.RAC would increase scalability for all application workloads in all cases.
F.RAC would increase availability in the event of node and instance failures.
G.RAC used in conjunction with parallel execution may provide speedup of DSS queries.
H.RAC used in conjunction with parallel execution may provide for speedup of OLTP workload processes.
Correct:A F G

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NO.5 You are about to build a new Oracle Clusterware-based cluster and you want to make the
installation process as smooth as possible. You decide to use the Cluster Verification Utility
(CLUVFY) to check whether or not your system administrator has set up the hardware and system
software correctly. Which two statements about CLUVFY are true? (Choose two.)
A.You can run CLUVFY only from a privileged operating system account.
B.You can run CLUVFY directly from the Oracle Clusterware distribution media.
C.CLUVFY cannot be used until the Oracle Clusterware is installed successfully.
D.After the Oracle Clusterware installation, you can run CLUVFY from the Oracle Home that holds the
CRS binaries.
E.You have to install CLUVFY on all cluster nodes in order to use CLUVFY on other nodes than the one
from which you perform the installation.
F.To use CLUVFY during the Oracle Clusterware installation, you have to download CLUVFY from the
Oracle Technology Network (OTN) Web site and install it before you can use it.
Correct:B D

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NO.6 You are running a two-instance database with six redo log groups defined and decide to add a
third thread to support a third database instance on the third node of the cluster. Which three
commands would you issue to achieve this using command line administration? (Choose three.)
A.ALTER SYSTEM ENABLE THREAD 3;
B.ALTER DATABASE ENABLE THREAD 3;
C.ALTER SYSTEM ADD LOGFILE THREAD 3 GROUP 8;
D.ALTER SYSTEM ADD LOGFILE THREAD 3 GROUP 7;
E.ALTER DATABASE ADD LOGFILE THREAD 3 GROUP 7;
F.ALTER DATABASE ADD LOGFILE THREAD 3 GROUP 8;
Correct:B E F

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NO.7 Which two initialization parameters must be set to start up an ASM instance in a RAC
environment? (Choose two.)
A.INSTANCE_TYPE
B.DB_UNIQUE_NAME
C.ASM_DISKSTRING
D.ASM_DISKGROUPS
E.ASM_POWER_LIMIT
F.CLUSTER_DATABASE
Correct:A F

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NO.8 Which initialization parameter would you use for each RAC instance to make sure that each
listener on each RAC node is aware of the load of all the others?
A.LOCAL_LISTENER
B.REMOTE_LISTENER
C.REMOTE_DEPENDENCIES_MODE
D.PREFER_LEAST_LOADED_NODE_
Correct:B

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NO.9 You decide to implement a Data Guard configuration to support a disaster recovery plan for
your RAC database. Your primary database has all shared files and the flash recovery area is
stored on ASM disk groups. Which three options exist for storing the data guard broker
configuration files at the primary location? (Choose three.)
A.can be in any shared ASM disk group
B.can be stored on shared Raw Devices
C.must be stored on Oracle Cluster File System if a cluster file system is used
D.may be stored on any supported cluster file system if a cluster file system is used
E.must be in the same shared ASM disk group as the database data files if the broker configuration files
are stored in ASM disk groups
F.must be in the same shared ASM disk group as the Flash Recovery Area if the broker configuration files
are stored in ASM disk groups.
Correct:A B D

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NO.10 Which three storage types are suitable as a flash recovery area for an Oracle 10g RAC database?
(Choose three.)
A.Raw volume
B.ASM disk group
C.Local file system
D.Cluster file system
E.Shared NFS directory
Correct:B D E

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NO.11 You are working as a DBA in a RAC environment that is available for testing. The RAC
environment has all the database files stored in the OCFS file system. You plan to install ASM and
move all the database files to ASM to achieve better performance. During the installation, you
selected redundancy level as normal for the disk group being added. What is the reason for
selecting this redundancy level?
A.You want to use hardware mirroring.
B.You do not want to have any mirroring in the disk group.
C.You have two failure groups defined, so you want to use two-way mirroring.
D.You have three failure groups defined, so you want to use three-way mirroring.
Correct:C

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NO.12 Your company has certain standard practices for technology and you are configuring ASM disk
groups for your four-node RAC cluster. The company guidelines suggest that there is one disk
group for the flash recovery area that is shared by all databases and a separate disk group for the
database area of all databases. Which three exceptions exist that may require you to create
additional disk groups? (Choose three.)
A.The retention policy for backups are different for different databases.
B.There are large nonpartitioned tables accessed frequently using indexes.
C.The disk farm has different disk models with different characteristics and ages.
D.Some databases operate in ARCHIVELOGMODE and others in NOARCHIVELOGMODE.
E.Some database instances are shut down every night while others are always running.
F.Applications using the databases have different Service-Level Agreements for response time and
throughput.
G.There are partitioned tables where the older partitions are in read-only tablespaces and seldom
accessed, but the more recent partitions are frequently accessed.
Correct:C F G

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NO.13 You have a well-tuned, non-RAC single instance Oracle database with several services, all of
which perform perfectly. You plan to migrate the database to RAC in the next two weeks and all file
systems would be shared using Oracle Cluster File System. After the migration, you want to
perform a test to monitor RAC-specific tuning issues that would not have occurred on a non-RAC
database. Which six areas would you monitor to determine whether there are RAC-specific
performance problems after migration? (Choose six.)
A.Interconnect latency
B.Instance recovery time
C.Services with applications that use external tables
D.Services with applications that truncate large tables
E.Services with applications using local context variables
F.Services with query-intensive applications relying on full table scans
G.Services with insert-intensive applications that use Oracle sequences for index keys
H.Services with applications that have occasional queries, using index access on modestly sized tables
I.Services with insert-intensive applications that generate their own keys without Oracle sequences
Correct:A B D F G I

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NO.14 In a RAC environment, you see a steep increase for enq:HW - contention and gc current grant
wait events. What would you do to fix this issue?
A.Increase the cache size of sequences.
B.Reduce the time of transactions by committing more often.
C.Use larger uniform extent sizes for objects.
D.Reduce the number of updates causing locks on tables accessed by multiple instances.
Correct:C

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NO.15 Which optional parameter of the DESCRIPTION clause of a TNS entry can you use to randomize
the access to available listeners?
A.FAILOVER
B.LOAD_BALANCE
C.SOURCE_ROUTE
D.TYPE_OF_SERVICE
Correct:B

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NO.16 Several steps must be followed to successfully add a new node to your cluster database.
Assuming that a UNIX platform is used, which of the three steps below are correct? (Choose
three.)
A.Add instances using OUI.
B.Reconfigure listeners for the new node with netca.
C.Configure the OS and hardware for the new node.
D.Add the node to the cluster using the addnode.sh script run from ORA_CRS_HOME.
E.Add the RAC software to the new node using addnode.sh from ORA_CRS_HOME.
Correct:B C D

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NO.17 Which three statements regarding backup of the voting disk are true? (Choose three.)
A.On UNIX platforms, the voting disk can be backed up with the dd command.
B.A backup of the voting disk should be taken whenever an RMAN catalog reset is done.
C.A backup of the voting disk should be taken whenever a new node is added to the cluster.
D.A backup of the voting disk should be taken whenever an existing node is removed from the cluster.
E.Whenever a voting disk backup is made, the Clusterware software should be stopped on all nodes in
the cluster.
Correct:A C D

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NO.18 After migrating from a 10g R1 cluster to 10g R2, you decide to multiplex your voting disk.
Which are the two ways in which you can accomplish this task? (Choose two.)
A.You should not use symbolic links.
B.You can add additional voting disks online.
C.You must add additional voting disks offline.
D.You may use the VIPCA utility to add new voting disks.
E.You may use the command: crsctl add css votedisk
Correct:B E

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NO.19 View the Exhibit, which displays the cluster database performance page after the same
workload has been executed three times on your cluster without varying any non-Oracle
workloads on the cluster. What are the two ways by which you can tell that the corresponding
application was better tuned during the second and third execution? (Choose two.)
A.There is less paging each time.
B.The run queue length is going down each time.
C.It takes less time to execute the workload each time.
D.The number of transactions per second is getting higher each time.
E.The database throughput graphic is below the red dashed line during the last execution.
Correct:C D

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NO.20 Oracle Cluster Registry (OCR) can be recovered on a UNIX platform using which two
commands? (Choose two.)
A.ocrconfig -import /u01/logical_ocr/yesterday.ocr where yesterday.ocr is an automatically generated
OCR backup
B.ocrconfig -import /u01/logical_ocr/yesterday.ocr_exp where yesterday.ocr_exp is a logical backup
created using the ocrconfig -export command
C.cp /app/oracle/product/10.1.0/crs_1/cdata/dbclust01/day.ocr /ocfs/OCR/crs.dbf where
/ocfs/OCR/crs.dbf is the cluster registry file
D.ocrconfig -restore /app/oracle/product/10.1.0/crs_1/cdata/dbclust01/day.ocr where day.ocr is an
automatically generated OCR backup
Correct:B D

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Code d'Examen: 1Z1-403
Nom d'Examen: Oracle (Enterprise Linux System Administration)
Questions et réponses: 115 Q&As

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NO.1 You have the default syslogd configuration in your system. You plugged in a USB keydrive into the
system.
Which command would help you to find the bus and the device number of the keydrive?
A. lsusb
B. lsmod
C. insmod
D. cat /proc/self/mounts
Answer: A

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NO.2 Being the system administrator for XYZ corporation, you have been given the task of setting up a new
Linux box.
The new machine has to meet the following criteria:
1. There should be a provision for expanding one filesystem without affecting the other filesystems.
2: The user data should be safe in the event of root file system crash.
3: The filesystems should support journaling.
Which three actions must you take to meet all the requirements? (Choose three.)
A. Use ext3 as the filesystem.
B. Use ext2 as the filesystem.
C. Have the /usr/ directory on its own filesystem.
D. Have the /home/ directory on its own filesystem.
E. Separate the directory structure across multiple partitions.
Answer: ADE

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NO.3 As an administrator, you execute the following command to verify the integrity of mysql:
[root@server1]#rpm -Va mysql
S.5....T c /etc/my.cnf
What attributes of the /etc/my.cnf file have changed?
A. The permissions, user ownership, and file type have changed.
B. The permissions, group ownership, and file type have changed.
C. The user ownership, group ownership, and file type have changed.
D. The MD5 signature, file size, and modification time have changed.
Answer: D

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NO.4 You have trouble in booting the Linux system and want to troubleshoot it. To find the cause, you want to
make the kernel start the bash program in place of init.
What would you do to achieve this objective? (Choose all that apply.)
A. Pass S as the kernel parameter to the grub menu.
B. Pass 1 as the kernel parameter to the grub menu.
C. Pass init=/bin/bash as the kernel parameter to the grub menu.
D. Pass INIT=/sbin/bash as the kernel parameter to the grub menu.
Answer: C

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NO.5 You are logged in to server1 and want to allow remote connections to server1 through X Display
Manager Control Protocol (XDMCP). You change the entry "Enable=false" to "Enable=true" in the
"[xdmcp]" section of the gdm.conf configuration file.
To test the XDMCP configuration, you log in to station1 as smith and try to connect to server1 by using the
following command:
[smith@station1]$ X -query server1.example.com :1
What is the result?
A. A connection to the gdm display manager on server1.example.com would be established using direct
XDMCP.
B. A connection to the xdm display manager on server1.example.com would be established using direct
XDMCP.
C. A connection to the gdm display manager on server1.example.com would be established using indirect
XDMCP.
D. A connection to the xdm display manager on server1.example.com would be established using indirect
XDMCP.
Answer: A

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NO.6 During the installation of Oracle Enterprise Linux, you want to customize the packages to be installed.
You select one of the package groups that has both base and optional packages.
Which statement about the packages is true?
A. Only the optional packages would be installed.
B. All the base packages and the optional packages would be installed.
C. The selection of a base package does not depend on an optional package.
D. Only the base packages and the auto selected optional packages would be installed.
Answer: D

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NO.7 Which two statements are true about an X server? (Choose two.)
A. Multiple X servers can be run on the same host.
B. The first X server on a remote host listens on port 6000.
C. The first X server on a remote host listens on port 6001.
D. Only a single X server can run on a machine at any given point of time.
Answer: AB

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NO.8 You are downloading a text file from the Web into a directory on an ext2 filesystem. The system crash
after the data blocks are written onto the disk but before the metadata is written.
What is the status of the file after this transaction?
A. The file contents can be seen only using the cat command.
B. The file can be accessed using only the vi editor and does not require to be repaired using fsck.
C. The file cannot be accessed and must be repaired using fsck inorder to access the file contents.
D. The file contents can be accessed using only the emacs text editor and does not require to be repaired
using fsck .
Answer: C

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NO.9 You work for XYZ organization and are setting up a new Linux box. The organization wants the user's
data on the system to be safe even in the event of a crash of the root filesystem.
Which step do you think would help the administrator achieve the organization's objective?
A. Have /opt directory on its own filesystem with the filesystem being ext3.
B. Have /home directory on its own filesystem with the filesystem being ext3.
C. Have /var directory on its own filesystem and all other filesystems under / (root filesystem).
D. Have /usr directory on its own filesystem and all other filesystems under / (root filesystem).
Answer: B

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NO.10 You have server1 configured as the Virtual Network Computing (VNC) server. There is no firewall
between server1 and station1. You have logged on to station1 as root and want to connect to server1
using VNC. You issue the following command:
[root@station1]# vncviewer server1.2
Which statement is true?
A. server1 provides an encrypted connection to station1.
B. The xinetd service on station1 is not mandatory for the VNC connection.
C. The desktop of server1 is shared with station1 without prompting for a password.
D. station1 is prompted for a password and the desktop of server1 is shared with station1 only when the
correct password is entered.
Answer: D

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NO.11 You are installing Oracle Enterprise Linux on a machine and are at the stage of swap filesystem
creation. You want to ensure that swap contains twice the amount of RAM available in the system but do
not know the total available memory.
You can use the free command but do not have a prompt to execute the command. Which key
combination would take you to a command prompt?
A. [Ctrl]+[Alt]+[F2]
B. [Ctrl]+[Alt]+[F3]
C. [Ctrl]+[Alt]+[F4]
D. [Ctrl]+[Alt]+[F1]
Answer: A

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NO.12 You are installing Oracle Enterprise Linux in the Graphical User Interface(GUI) mode on your machine
and are at the package group selection panel. You do not want to customize the packages to be installed.
Therefore, select the option "install default software packages."
Which three packages would be in the default selection group? (Choose three.)
A. GNOME
B. Webserver
C. System Tools
D. Printer Support
E. Windows File Server (SMB)
Answer: ABE

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NO.13 To find the value of the DISPLAY environment variable, you issue the following command:
[rooot@server1]#echo $DISPLAY
0
[rooot@server1]#
What do you interpret from the environment variable's value?
A. Graphical applications would make a local UNIX socket connection.
B. Graphical applications would make a remote UNIX socket connection.
C. Graphical applications would make the first network connection to TCP port 6001.
D. Graphical applications would make the second network connection to TCP port 6000.
Answer: A

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NO.14 Identify two true statements about Virtual Network Computing (VNC). (Choose two.)
A. It is a client/server application.
B. It allows entire desktops to be displayed remotely.
C. It does not provide any protection to remote X connections.
D. It allows applications to be run remotely and displayed only locally.
E. It is used to connect to a remote Linux machine only from a Linux machine.
Answer: AB

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NO.15 You have a /dev/md1 redundant array of independent disks (RAID) array on your system as shown
below:
[root@server1 ~]# cat /proc/mdstat
Personalities : [raid 5]
md1 : active raid5 sdd1[3] sdc1[1] sdb1[0]
594176 blocks level 5, 64k chunk, algorithm 2 [3/2] [UU_]
unused devices:
The /dev/md1 RAID array is mounted on /data. You issued the command:
mdadm --fail /dev/md1 /dev/sdc1 /dev/sdb1
Which statements are true about the RAID array after you issue this command? (Choose all that apply.)
A. The kernel would report a Buffer I/O error on the RAID device /dev/md1.
B. The RAID array would be destroyed but the data could be recovered from the RAID disks.
C. The RAID array would be completely destroyed including the super block of the file system.
D. The RAID array could be reconstructed using new RAID partitions that synchronize with the /dev/sdd1
disk partition.
Answer: AC

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NO.16 Match the following scripts and their applicability:
1. ./.xinitrc a) applies if X is started directly, or if ./.xsession does not exist and X is started viaa display
manager
2) ./.xsession b) applies when X is started directly
3) ./.Xclients c) applies when X is started from a display manager
A. 1-b, 2-a, 3-c
B. 1-b, 2-c, 3-a
C. 1-a, 2-b, 3-c
D. 1-a, 2-c, 2-b
Answer: B

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NO.17 You want to make Oracle Enterprise Linux coexist with Microsoft Windows on your machine. You
install Oracle Enterprise Linux first with the default boot loader configuration and then install Microsoft
WindowsXP. You reboot the system after installation and the system boots directly into the Windows
operating system without showing the Grand Unified Boot Loader (GRUB) menu.
Which two steps could you have taken to avoid this situation? (Choose two.)
A. Install Oracle Enterprise Linux first with the boot loader on MBR and then install Microsoft WindowsXP.
B. Install Microsoft WindowsXP first and then install Oracle Enterprise Linux with the boot loader on
Master Boot Record (MBR).
C. Install Microsoft WindowsXP first and then install Oracle Enterprise Linux with the boot loader at the
first sector of the /boot partition.
D. Install Oracle Enterprise Linux first with the boot loader at the first sector of the /boot partition and then
install Microsoft WindowsXP.
Answer: BC

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NO.18 You have bound your system to the Network Information Service (NIS) domain ORACLE and all
client-side configurations are done. The users report a problem that they are not able to log in through
NIS accounts, whereas local users are successfully authenticated, after the system reboots.
As a Linux administrator, you executed the nisdomainname command and you get the output "(none)",
and no traces of yp are found in the /var/log/messages file.
What would you do to resolve this error? (Choose all that apply.)
A. Re-create the NIS domain on the server that runs the NIS domain ORACLE.
B. Restart the ypserv service on the server that runs the NIS domain ORACLE.
C. Restart the network service on the server that runs the NIS domain ORACLE.
D. Use the chkconfig command to set the ypbind service to be on at the desired runlevels.
E. Use the ntsysv command to select the ypbind service to be automatically started with the desired
runlevels.
Answer: DE

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NO.19 You have written a udev rule as shown below:
KERNEL=="fb[0-9]*", NAME="fb/%n", SYMLINK+="%k", GROUP="video"
KERNEL=="fd[0-9]*", OWNER="john"
Which two statements are true? (Choose two.)
A. The user john would own all the floppy devices.
B. The user john would own all the floppy and frame buffer devices.
C. The video group on the system would own all the floppy devices.
D. The video group on the system could be controlled by john only.
E. The video group on the system would own all the frame buffer devices.
Answer: AE

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NO.20 Which three statements are true about the Linux swap file system? (Choose three.)
A. The Linux user data cannot be written to the Linux swap space.
B. High-priority swap spaces would be exhausted only after exhausting swap spaces with equal priorities.
C. The Linux kernel code and data are not swappable and are never moved to swap file system from
physical memory.
D. If too much space is allocated for swap, errant programs may run for an extended time and use up
RAM and swap space.
E. When most of the system's real memory is in use, and there is a need for more, some data would be
moved into the swap file system to free real RAM memory for use by applications or for kernel use, such
as for driver buffers, files, or network packets.
Answer: CDE

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NO.21 You are currently working in runlevel 3. The X server is configured correctly and the default runlevel is
set to 5 in the /etc/inittab file. To find the default desktop you issue the following command:
[root@server1]#cat /etc/sysconfig/desktop
[root@server1]#
You find the file empty. What will be the effect when you try to go to the runlevel 5?
A. The system defaults to kdm and launch KDE.
B. The system defaults to xdm and launch GNOME.
C. The system defaults to gdm and launch GNOME
D. The system will fail to log into the graphical mode.
Answer: C

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NO.22 Which two statements correctly define Virtual Network Computing (VNC)? (Choose two.)
A. It is a client/server application.
B. It does not provide any protection to remote X connections.
C. It allows entire desktops to be displayed and controlled remotely.
D. It is used to connect to a remote Linux machine only from a Linux machine.
Answer: AC

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NO.23 You want to configure the display login program to display the face browser of user accounts for
system logon.
Which two display managers support this feature? (Choose two.)
A. gdm
B. kdm
C. twm
D. xdm
Answer: AB

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NO.24 While importing user accounts in bulk along with passwords using the newusers command, you noticed
that user passwords are saved in the /etc/shadow file in the crypt format.
How would you enable the newusers command to use the preferred MD5 format when writing passwords
to the /etc/shadow file?
A. Add the MD5_ENAB=yes line to the /etc/login.defs file.
B. Add the MD5_CRYPT yes line to the /etc/login.defs file.
C. Add the MD5_CRYPT_ENAB yes line to the /etc/login.defs file.
D. Add the MD5_CRYPT_ENAB yes line to the /etc/security/limits.conf file.
Answer: C

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NO.25 You are installing Oracle Enterprise Linux in the Graphical User Interface (GUI) mode on your
machine. From the package selection screen, you select one of the package groups.
Which two statements are NOT true in this context? (Choose two.)
A. Only the optional packages would be installed.
B. All the optional packages are also installed along with the package group.
C. Both the base packages and all the optional packages would be installed.
D. The selection of a base package does not depend on an optional package.
E. Only the base packages and the auto-selected optional packages would be installed.
Answer: AB

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NO.26 The organization you work for wants to set up a new machine with Oracle Enterprise Linux and has
three requirements:
1. The filesystem should be consistent.
2: The old data should not reappear in the files after an unclean shutdown.
3: The filesystem data should be written to the disk before metadata.
In order to meet these requirements, you have set the ext3 journaling mode as data=writeback.
Which requirements have you met?
A. only 1
B. only 2
C. only 3
D. both 1and 3
E. both 2 and 3
F. both 1 and 2
G. All the three requirements are met.
Answer: A

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NO.27 The system you logged in is running in runlevel 5. You want to customize X and want to have a
consistent environment regardless of how X is started.
Which step is recommended?
A. Delete the ~/.Xclients file and use the ~/.xinitrc file.
B. Delete ~/.Xclients and ~/.xsession and use the ~/.xinitrc file.
C. Delete ~/.xinitrc and ~/.xsession and use the ~/.Xclients file.
D. Delete ~/.xinitrc and ~/.Xclients and use the ~/.xsession file.
E. Delete the ~/.Xclients file and use both ~/.xinitrc and ~/.xsession files.
Answer: C

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NO.28 The user smith executed the mozilla command, located in /usr/bin and owned by the root user.
Which two statements are true? (Choose two.)
A. When mozilla needs to access certain files, the access would be determined by root's permissions.
B. When started by smith, smith would own the initial mozilla program and all processes started by the
initial process.
C. When mozilla needs to access certain files, the access would be determined by smith's permissions
and not by root's.
D. When started by the user smith, the user smith would own the initial mozilla program and all processes
started by the initial process would be owned by the system user associated with mozilla.
Answer: BC

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NO.29 You are in runlevel 5 working at the tty1 terminal on server1. To configure the gdm display manager,
you issue the following command but this results in an error as shown below:
[root@server1]#gdmsetup
(gdmsetup:6326): Gtk-WARNING **: cannot open display:
What could be the reason for the error?
A. The /etc/inittab file is corrupted.
B. The Xserver on the system is not running.
C. The xfs service is not running on the system.
D. The runlevel in the /etc/inittab file is missing.
E. The command only works in a graphical environment.
Answer: E

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NO.30 You want to install the ieee80211 module on your Linux system. While building the module, you receive
the following error:
Make [2]: *** [ieee 80211-1.2.17/ieee80211_module.o] Error 1
Make [1]: *** [_module_/ieee80211-1.2.17] Error 2
Make [1]: Leaving directory '/usr/src/kernels/2.6.9-42.0.0.0.1.EL-i686'
Make: *** [modules] Error 2
What do you infer from this error?
A. The ieee80211 module conflicts with the current kernel version.
B. The dependency modules for ieee80211 are not installed on the system.
C. The ieee80211 module given is not supported by the machine architecture.
D. The kernel source package, which must be installed to compile external device drivers, is not installed
on the system.
Answer: D

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NO.1 The GNU project was started by Free Software Foundation (FSF) with a goal to create a Free UNIX
Clone.
What do you understand by the term Free as per the terms of FSF?
A. The source code will be provided free of cost with the software.
B. The software is fully free and is charged only to fix breakdowns.
C. The software is distributed free in runnable (installable) form with no cost.
D. The software is distributed free but does not offer the freedom to redistribute it.
Answer: A

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NO.2 As a root user you want to modify the default shell prompt to include the hostname as part of the
prompt. Also you want the change in the hostname to reflect on the prompt immediately.
Which option would help you achieve this task?
A. PS2='[`hostname`]'
B. PS1='[`hostname`]'
C. PS2=''[`hostname`]''
D. PS1=''[`hostname`]''
Answer: B

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NO.3 You have set HISTCONTROL=ignoreboth. What are the implications of this setting on history?
A. It saves both duplicates and commands prefixed with a space.
B. It ignores commands prefixed with a space but saves duplicates.
C. It ignores duplicates but saves the commands prefixed with space.
D. It ignores both the duplicate commands and commands prefixed with a space.
Answer: D

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NO.4 You have to start a process in the bash shell and at the same time want to work in the shell. How would
you achieve this without terminating the process?
A. Press [Ctrl] + [y] while the process is running.
B. Press [Ctrl] + [d] while the process is running.
C. Press [Ctrl] + [z] while the process is running.
D. Press [Ctrl] + [c] while the process is running.
Answer: C

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NO.5 UNIX was known as the most stable operating system ever released. Identify two major design
principles that help attain this stability. (Choose two.)
A. easily modifiable end user programs
B. all configuration data stored in binary files
C. entire policy decisions made by the kernel
D. everything in UNIX is either a file or a process
Answer: AD

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NO.6 As root user you have set the environment variable HISTIGNORE="ls:man:pwd:cat" with the other
history-related shell variables at their default. What impact does it have on shell history?
A. History will ignore only the commands listed in the HISTIGNORE variable.
B. History will save only the first occurrence of the commands listed in the HISTIGNORE variable.
C. History will ignore only the commands, issued with any valid switch, listed in the HISTIGNORE
variable.
D. History will save only the first occurrence of the commands, issued with any valid switch, listed in the
HISTIGNORE variable.
Answer: A

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NO.7 You executed the following command on a Linux machine:
sed s/hello/fun/g file1.txt | tr a-z A-Z > file2.txt
What three things would this command do? (Choose three.)
A. Save all changes to file2.txt.
B. Translate all uppercase characters to lowercase.
C. Translate all lowercase characters to uppercase.
D. Modifies file1.txt and creates file2.txt.
E. Replace all occurrences of the entry hello with the entry fun.
F. Replace all occurrences of the entry fun with the entry hello.
Answer: ACE

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NO.8 What is the minimum number of disk partitions required to have a successful Linux installation?
A. 2 (two)
B. 4 (four)
C. 1 (one)
D. 3 (three)
Answer: C

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NO.9 Examine the following output:
Which columns would you analyze to find the most recently invoked shell?
A. Analyze only the PID.
B. Analyze only the UID.
C. Analyze only the PPID.
D. Analyze both the UID and PID.
E. Analyze both the PID and PPID.
F. Analyze both the UID and PPID.
Answer: E

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NO.10 Multiple users can share a UNIX machine. This is made possible by the OS by using one user's idle
time to service other users. What is this feature of an operating system identified as?
A. data sharing
B. time sharing
C. one-time initialization
D. light weight kernel threading
E. interrupt driven process handling
Answer: B

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NO.11 As user smith you want the CPU utilization of all the users logged on to server1 server. You want the
information available automatically as soon as you login to the bash login shell and want the information
available only to smith.
What would you do on server1, which has all the default shell configuration files, to accomplish the task?
A. Add the w command to ~/.profile file.
B. Add the who command to ~/.profile file.
C. Add the w command to ~/.bash_profile file.
D. Add the who command to ~/.bash_profile file.
Answer: C

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NO.12 View the Exhibit.
The shell script is executed using the default shell interpreter with the input as w. What will be the output
of the script based on this input?
A. It will print the current date and time.
B. It will list all the currently logged in users.
C. It will show that the input is not a valid option.
D. It will print the currently logged in users, current date, and time.
E. It will not show any result because the case block is terminated with an esac.
Answer: C

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NO.13 A new user smith wants to customize the bourne shell by creating a new alias for the ls -l command.
He wants to make the new alias persistent across logouts and also reboots.
What could be done to make the new alias persistent only for smith?
A. Add the new alias to ~/.bashrc.
B. Add the new alias to ~/.profile.
C. Add the new alias to /etc/profile.
D. Add the new alias to ~/bash_profile.
Answer: B

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NO.14 Which statements are true about the File Extensions? (Choose all that apply.)
A. File extensions are just part of the file name.
B. File extensions are cared by all applications.
C. File content depends upon the file extensions.
D. File extensions do not always say what the file is.
E. File extensions have no special meaning to the kernel.
Answer: ADE

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NO.15 Match the bash file with its description:
A. 1-c, 2-d, 3-b, 4-a
B. 1-b, 2-c, 3-a, 4-d
C. 1-c, 2-d, 3-a, 4-b
D. 1-b, 2-c, 3-d, 4-a
Answer: C

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NO.16 When bash is invoked as an interactive login shell, what is the order in which the bash configuration
files are read with the assumption that all the files exist and are readable?
A. ~/.bash_profile,~/.bash_login,/etc/profile,~/.profile
B. /etc/profile,~/.bash_profile,~/.bash_login,~/.profile
C. ~/.profile,~/.bash_login,/etc/profile,~/.bash_profile
D. ~/.bash_login,/etc/profile,~/.profile,~/.bash_profile
Answer: B

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NO.17 Why is a Linux operating system always developed and released under a common standard known as
Linux Standard Base (LSB)?
A. to avoid interoperability
B. to avoid POSIX Compliance
C. to ensure application-level diversity
D. to ensure compatibility among distributions
Answer: D

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NO.18 Which statements are true about xauth? (Choose all that apply.)
A. It stores all tokens in a file on the system.
B. It must be available to use X11 forwarding.
C. It distributes token on a host-by-host basis.
D. It can be used to control token-based access control.
E. It is not possible to install just xauth without installing the entire X server.
Answer: ABD

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NO.19 You have issued the following command:
mkdir -p test/a{dax,connor,bryan}g/vo{in,out,tmp}
Which of the following directories will it create? (Choose all that apply.)
A. test/voin/adaxg
B. test/adaxg/voout
C. test/aconnorg/voin
D. test/adaxnnorg/voinout
E. test/aconnoyang/vointmp
Answer: BC

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NO.20 View the Exhibit.
What are the privileges granted to the user smith on the /tmp/backup directory?
A. He can only list the contents of /tmp/backup.
B. He can only navigate to the /tmp/backup directory.
C. He can change to and copy contents from the /tmp/backup directory.
D. He can only change to and from the /tmp/backup directory but cannot list its contents.
Answer: A

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NO.21 As user smith you want to log in to a remote machine in a securely encrypted channel. Which utility
would you use for the purpose?
A. ssh
B. ftp
C. telnet
D. rlogin
Answer: A

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NO.22 You executed the following command to verify the integrity of sendmail:
What do infer about the /var/log/mail/statistics file from the output?
A. The permissions, user ownership, and file type have changed.
B. The permissions, group ownership and file type have changed.
C. The user ownership, group ownership and file type have changed.
D. The MD5 signature, file size, and modification time have changed.
Answer: D

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NO.23 Which three statements are true about the mount command? (Choose three.)
A. It supports labels for mounting.
B. It can be used only by root to mount the local file system.
C. By default it can be used by an ordinary user to mount the local file system.
D. It will list all the currently mounted file systems, if executed without any arguments.
E. It will list only the file systems listed in /etc/fstab if executed without any arguments
Answer: ABD

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NO.24 You have logged in as user smith at tty1 terminal and issued the following incomplete command at the
bash prompt:
The shell displays the default secondary prompt ">". What would you do to make "=>" as the default
secondary prompt temporarily only for user smith and for the tty1 terminal current session?
A. Redefine PS1==>.
B. Redefine PS2==>.
C. Redefine PS3==>.
D. Redefine PS4==>.
Answer: B

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NO.25 Identify the option that has the correct match for an Enterprise Linux standard/feature with its
description:
A. 1-b, 2-d, 3-a, 4-c
B. 1-d, 2-a, 3-b, 4-c
C. 1-c, 2-a, 3-d, 4-b
D. 1-b, 2-c, 3-d, 4-a
Answer: B

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NO.26 Identify the shareable directories according to File system Hierarchy Standard (FHS).
(Choose all that apply.)
A. /etc
B. /usr
C. /var/run
D. /var/lock
E. /var/mail
F. /etc/sysconfig
Answer: BE

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NO.27 You have logged in as normal user bob with the default login shell. An attempt by bob to change the
default shell to /bin/sh fails with an error.
What could be the possible reason?
A. The SUID bit is not set on chsh by default.
B. The /bin/sh entry is not listed in /etc/shells file.
C. bob does not have the permissions to change the shell by default.
D. bob does not have read permissions on the/etc/shells file by default.
Answer: B

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NO.28 As root you have changed the default login shell to one of the shells listed in /etc/shells file. Which file
entry is modified as a result of this?
A. /etc/shadow
B. /etc/shells
C. /etc/passwd
D. /etc/default/useradd
Answer: C

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NO.29 Identify the two main branches from the UNIX family tree, where the cross-pollination between these
branches was responsible for making UNIX so powerful. (Choose two.)
A. MIT
B. GNU
C. BSD
D. POSIX
E. BESYS
F. System V
Answer: CF

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NO.30 As an administrator you want to make sure that accidentally you do not delete files using rm command.
You also want to make sure that even the use of rm command without any valid switches prompts for
confirmation before file deletion.
Which option would help you achieve this task?
A. alias rm="rm -i".
B. alias rm="rm -f".
C. alias rm="rm -r".
D. alias rm="rm -v".
Answer: A

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