2013 Latest MCTS 70-642 Exam Questions 76-80

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QUESTION 26
Your network contains a server named DC1 that runs Windows Server 2008 R2. DC1 hosts an Active
Directory-integrated stub zone named contoso.com.
You need to ensure that DC1 contains the most up-to-date records for the zone. What should you do?
A. From Active Directory Sites and Services, click Replicate Now.
B. From Active Directory Sites and Services, click Check Replication Topology.
C. From DNS Manager, click Update Server Data Files. D. From DNS Manager, click Transfer from Master.
Correct Answer: C
Explanation/Reference:
Correct answer(s): C

QUESTION 27
Your network contains an Active Directory domain named contoso.com. The network is configured to use
ISATAP.
You have a server named Server1 that runs Windows Server 2008 R2. On Server1, you discover that a tunnel adapter named isatap.contoso.com has a Media State of “Media disconnected”.
You confirm that Server1 has a valid network connection and can query the DNS server. You need to ensure that the isatap.contoso.com tunnel adapter has an IPv6 address.
What should you do?
A. Start the IP Helper service.
B. Start the IPsec Policy Agent service. C. Add a new rule to Windows Firewall.
D. Add an entry for ISATAP to the Hosts file.
Correct Answer: A
Explanation/Reference: Correct answer(s): A Explanation:
The IP Helper service service must be running for IPv6 transition technologies such as ISATAP, Teredo, and 6to4 to function on the computer. This service provides automatic IPv6 connectivity over an IPv4 network, and if the service is stopped, the computer will have only IPv6 connectivity if it is connected to a native IPv6 network. Therefore, if your network is not native IPv6, disabling this service on Windows Server
2008 computers effectively disables IPv6 on them.

QUESTION 28
Your company has a branch office that contains 1,000 computers. You need to select a network address that supports 1,000 computers in the same subnet. The solution must minimize the number of unused addresses in the subnet.
Which address range should you configure?
A.
172.16.0.0/16
B.
172.16.0.0/18
C.
172.16.0.0/22
D.
172.16.0.0/24
Correct Answer: C
Explanation/Reference:
Correct answer(s): C
Your network contains a computer named Computer1. Computer1 is assigned an IP address of
192.168.1.112/26.
Your company’s corporate policy states that the first usable address in each subnet is allocated to the default gateway.
You need to configure the default gateway for Computer1. Which address should you choose?
A.
192.168.1.1
B.
192.168.1.63
C.
192.168.1.65
D.
192.168.1.93
Correct Answer: C
Explanation/Reference:
Correct answer(s): C

QUESTION 30
Your network contains a single Active Directory domain. All servers run Windows Server 2008 R2. You have an IPv6-only infrastructure that has multiple subnets. You deploy a new server named Server1.
You need to ensure that Server1 can communicate with the client computers in all of the internal subnets. The solution must use an address that is reserved for internal networks.
Which address should you assign? A. 2001::68c0:9f7c:8393:c214
B. FC00::68c0:9f7c:8393:c214
C. FE80::68c0:9f7c:8393:c214
D. FF02::68c0:9f7c:8393:c214
Correct Answer: B
Explanation/Reference:
Correct answer(s): B

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