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TS: Windows Server 2008 Active Directory. Configuring : 70-640 Exam

Exam Number/Code: 70-640
Exam Name: TS: Windows Server 2008 Active Directory. Configuring

“TS: Windows Server 2008 Active Directory. Configuring”, also known as 70-640 exam, is a Microsoft certification.
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QUESTION 1
You create a .NET Remoting object named Time. The Time is in the Utils namespace and is in an
assembly file named Certkiller .dll.
The Time class is hosted in an Internet Information Services (IIS) virtual directory named UtilsSvr.
The Time class is configured to be a server-activated object and uses a URI named Time.rem.
You use a client application named CertK .exe to test the Time object. CertK .exe creates instances of
the Time object by using the following method signature:
public Time CreateInstance() {
RemotingConfiguration.Configure(” CertK .exe.config”);
return new Time();
}
You want Certkiller .exe to create instances of the Time class on a compute named Hosting.
What should you do?
A. Create a CertK .exe.config file that includes the following code segment:


url="tcp://Hosting:80/UtilsSvr/Time.rem"/>


B. Create a CertK .exe.config file that includes the following code segment:


url="http://Hosting/UtilsSvr/Time.rem"/>


C. Create a CertK .exe.config file that includes the following code segment:






D. Create a CertK .exe.config file that includes the following code segment:

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Answer: B
Explanation: We use the markup to indicate that it is server-activated object. Then we
specify the http protocol in the url. A http channel should be used.
Incorrect Answers
A: We should use a http channel, not a tcp channel.
C, D: We should use the markup to specify that the object should be server-activated.
Reference: .NET Framework Developer’s Guide, Versioning
QUESTION 2
You have a .NET Remoting object named CKBatchOrder. The CKBatchOrder class allows remote
client applications to submit orders in batches.
Each CKBatchOrder object holds state information that is specific to each remote client application.
The CKBatchOrder class has overloaded constructors for initializing an object.
You want to develop a server application to host CKBatchOrder objects.
What should you do?
A. Create a Windows service, and register CKBatchOrder as a client-activated object.
B. Create a Windows service, and register CKBatchOrder as a server-activated Singleton object.
C. Host CKBatchOrder in Internet Information Services (IIS) and create a Web.config file to register
CKBatchOrder as a server-activated SingleCall object.
D. Host CKBatchOrder in Internet Information Services (IIS) and create a Web.config file to register
CKBatchOrder as a server-activated object with an infinite lease.
Answer: A
Explanation: Client-activated objects are objects whose lifetimes are controlled by the calling application
domain. This is the appropriate solution in this scenario.
Incorrect Answers
B, C: Singleton types never have more than one instance at any one time. If an instance exists, all client
requests are serviced by that instance.
D: Server-activated objects with an infinite lease would not be appropriate.
Reference:
.NET Framework Developer’s Guide, Client Activation
.NET Framework Developer’s Guide, Server Activation
QUESTION 3

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You have a .NET Remoting object named Utils. The Utils class is a client-activated .NET Remoting
object.
You want to write a client application that creates and uses a Utils object. You want the client
application to hold onto a reference to a Utils object for the duration of its execution.
What should you do?
A. Construct the Utils object, and hold the object in a member variable.
B. Construct the Utils object, and set the LifeTimeService.LeaseTime to 0.
C. In the client application, create an Implementation of the ISponsor interface. Implement the Renewal
method to extend the lease.
D. In the client application, create an Implementation of the ILease interface.
Implement the CurrentLeaseTime property to return Int32.MaxValue.
Answer: C
Explanation: We must create a sponsor, on the ISponser interface, that implements the renewal method to
extend the lease. This will ensure that the object lease will be renewed as long the client application is
running.
Note: Each Marshal-by-reference object (MBR) has a lifetime that is controlled by a combination of leases,
a lease manager, and some number of sponsors. A sponsor is an object that can request a new a lease for a
particular object by registering itself with the lease manager. The lease manager periodically examines all
leases for expired lease times. If a lease has expired, the lease manager walks its list of sponsors for that
object and requests whether any of them want to renew the lease. If no sponsor renews the lease, the lease
manager removes the lease and the object is deleted and its memory reclaimed by garbage collection. The
CurrentLeaseTime can be changed, either from an ILease.Renew call or when the lease manager calls
ISponsor.Renewal on a sponsor.
Incorrect Answers
A: This would not renew the release of the object. The default lease time is 5 minutes.
B: A lease time of zero sets the lease to an infinite lifetime.
D: The ILease.CurrentLeaseTime is a read-only property of the ILease interface. We cannot configure
this property.
Reference: .NET Framework Developer’s Guide, Lifetime Leases
.NET Framework Class Library, ILease.CurrentLeaseTime Property [C#]

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