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Vendor: Microsoft
Exam Code: 70-642
Exam Name: TS: Windows Server 2008 Network Infrastructure, Configuring

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Your network contains an Active Directory domain named
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 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 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.

Answer: A
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.

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?


Answer: C

Your network contains a computer named Computer1.
Computer1 is assigned an IP address of
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?


Answer: C

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

Answer: B

Your network contains two DHCP servers named Server1 and Server2.
On Server1, you create a scope named Scope1.
You need to ensure that DHCP clients receive IP addresses from the address range in Scope1 if Server1 is unavailable.
The solution must prevent both servers from assigning duplicate IP addresses.
What should you do from the DHCP console?

A.    On Server1, create a superscope.
B.    On Server1, select Scope1, and then run the Split-Scope wizard.
C.    On Server2, create a scope, and then reconcile each scope.
D.    On Server2, create a scope, and then enable Network Access Protection.

Answer: B

Your network contains an Active Directory domain.
The domain contains a DHCP server named Server1.
You create a scope named Scope1 on Server1.
You need to prevent unauthorized DHCP clients from receiving addresses from Server1.
What should you do?

A.    From the DHCP console, configure filters.
B.    From the Local Security Policy console, modify the network settings.
C.    From the Local Users and Groups console, modify the membership of the DHCP Users
D.    From the Netsh tool, change to the DHCP Server context, and then run the initiate auth

Answer: A
On DHCP>iPv4, click on properties, then click on filters tab:

You need to add a reservation for a print device to a DHCP scope.
Which two components should you include in the reservation? (Each correct answer presents part of the solution. Choose two.)

A.    the default gateway
B.    the IP address
C.    the MAC address
D.    the printer server name
E.    the subnet mask

Answer: BC
A reservation reserves an IP address based on the MAC address.

Your network contains two DHCP servers named Server1 and Server2.
Server1 and Server2 are located in the same subnet.
You configure a split scope named Scope1 on the DHCP servers.
You need to ensure that Server2 only responds to DHCP client requests if Server1 is unavailable.
What should you modify?

A.    the Scope1 properties for Server1
B.    the Scope1 properties for Server2
C.    the server options for Server1
D.    the server options for Server2

Answer: B
You need to configure a delay in the properties of Scope1 on Server2 so that Server1 always responds first.

Your network contains a DHCP server that is configured as shown in the exhibit. (Click the Exhibit button.)
You need to ensure that the DHCP server can respond to DHCP clients.
What should you do?

A.    From the DHCP console, authorize the DHCP server.
B.    From the Services console, start the DHCP Server service.
C.    From Network Connections, modify the IPv4 properties and the IPv6 properties.
D.    From the Local Users and Groups snap-in, add the Server3 computer account to the DHCP
Administrators group.

Answer: A

Your network contains a server named Server1.
Server1 runs Windows Server 2008 R2 and has a single network connection.
The connection is configured to use a default gateway address of
The default gateway has a metric value of 100.
You configure a second default gateway that uses an address of
You need to ensure that is only used as the default gateway if is unreachable.
What should you do?

A.    For the interface, set the interface metric to 100.
B.    For the gateway, set the metric to 50.
C.    For the gateway, set the metric to 200.
D.    For the gateway and the gateway, enable automatic metric.

Answer: C

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