70-642 Exam
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2021 Aug curso online 70-642:
Q251. - (Topic 4)
Your network contains a server named DC1 that has the DHCP Server server role installed. You discover that clients are not being assigned IP addresses from DC1.
You open the DHCP console as shown in the exhibit. (Click the Exhibit button.)
You need to ensure that the clients can be assigned IP addresses from DC1.
What should you do?
A. Compact the database.
B. Configure DHCP link layer-based filtering.
C. Configure a DHCP Relay Agent.
D. Restore the database from a backup.
E. Configure Routing Information Protocol version 2 (RIPv2) on the router
F. Increase the database cleanup interval.
G. Configure Open Shortest Path First (OSPF) on the router
H. Configure name protection.
I. Reconcile the scope.
J. Modify the start address.
K. Authorize DC1 in Active Directory.
Answer: K
Q252. - (Topic 1)
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.
Answer: 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.
Q253. - (Topic 1)
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.
Answer: C
Explanation: http://technet.microsoft.com/en-us/library/cc723556.aspx
The zone database files are the zones' permanent storage location, holding all the zones' resource records. If you use DNS Manager to make a change to a zone, the copy of the zone in the name server's memory is changed, and a flag is set to update that zone's database file. The name server updates the zone database file when it exits, unless you tell it to update it sooner. The command DNS --> Update Server Data Files causes the name server to update the zone database files of all zones it's a primary for, regardless of whether or not they've been modified. To avoid losing data, we recommend using DNS --> Update Server Data Files after any changes-use it like you use the Save command in other applications.
Q254. - (Topic 3)
Your network consists of a single Active Directory domain. All servers run Windows Server 2008 R2. You have a server named Server1 that hosts shared documents. Users report extremely slow response times when they try to open the shared documents on Server1.
You log on to Server1 and observe real-time data indicating that the processor is operating at 100 percent of capacity.
You need to gather additional data to diagnose the cause of the problem.
What should you do?
A. In the Performance Monitor console, create a counter log to track processor usage.
B. In Event Viewer, open and review the application log for Performance events.
C. In Resource Monitor, use the Resource View to see the percentage of processor capacity used by each application.
D. In Performance Monitor, create performance counter alert that will be triggered when processor usage exceeds 80 percent for more than five minutes on Server1.
Answer: C
Q255. - (Topic 4)
Your network contains an Active Directory domain named contoso.com.
All domain controllers and servers run Windows Server 2008 R2 Service Pack 1 (SP1). All client computers run Windows 7. A domain controller named dc1.contoso.com hosts an Active Directory-integrated zone for
contoso.com.
You have two Web servers named webl.contoso.com and web2.contoso.com. Both Web servers host the same website. Webl.contoso.com is located on a subnet named Subnet1. Web2.contoso.com is located on a subnet named Subnet2.
You create two host (A) records for internal.contoso.com. One record points to the IP address of webl.contoso.com. The other record points to the IP address ofweb2.contoso.com. All users access the website by using the URL http://internal.contoso.com.
You discover that the client computers on Subnet1 always connect to webl.contoso.com and the client computers on Subnet2 always connect to web2.contoso.com.
You need to ensure that all of the client computers are distributed randomly between both Web servers.
What should you do?
A. Disable DNS round robin on dc1.contoso.com.
B. Modify the time-to-live (TTL) value for the A records of internal.contoso.com.
C. Modify the time-to-live (TTL) value for the A records of webl.contoso.com and web2.contoso.com.
D. Disable netmask ordering on dcl.contoso.com.
Answer: D
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Q256. - (Topic 4)
Your network contains an Active Directory domain named contoso.com. The domain contains three VPN servers named VPN1, VPN2, and VPN3 that run Windows Server 2008 R2.
You need to configure all of the VPN servers to use the same network policies.
What should you configure on the VPN servers?
A. remediation server groups
B. the RADIUS Accounting accounting provider
C. connection request policies
D. the RADIUS Authentication authentication provider
Answer: C
Explanation:
Connection request policies are sets of conditions and settings that allow network administrators to designate which Remote Authentication Dial-In User Service (RADIUS) servers perform the authentication and authorization of connection requests that the server running Network Policy Server (NPS) receives from RADIUS clients. Connection request policies can be configured to designate which RADIUS servers are used for RADIUS accounting. Ref: http://technet.microsoft.com/en-us/library/cc753603.aspx
Q257. - (Topic 1)
Your company has a single Active Directory forest that has a domain in North America named na.contoso.com and a domain in South America named sa.contoso.com. The client computers run Windows 7.
You need to configure the client computers in the North America office to improve the name resolution response time for resources in the South America office.
What should you do?
A. Configure a new Group Policy object (GPO) that disables the Local-Link Multicast Name
Resolution feature. Apply the policy to all the client computers in the North America office.
B. Configure a new Group Policy object (GPO) that enables the Local-Link Multicast Name Resolution feature.
Apply the policy to all the client computers in the North America office.
C. Configure a new Group Policy object (GPO) that configures the DNS Suffix Search List option to sa.contoso.com, na.contoso.com. Apply the policy to all the client computers in the North America office.
D. Configure the priority value for the Service Location (SRV) records on each of the North
America domain controllers to 5.
Answer: C
Q258. - (Topic 3)
Your network contains an Active Directory domain. The domain contains a DNS server that runs Windows Server 2008 R2.
You plan to deploy DirectAccess on the network.
You need to ensure that the internal DNS infrastructure supports name resolution for DirectAccess.
What should you do?
A. Modify the Dynamic updates setting.
B. Add a trust anchor.
C. Modify the global query block list.
D. Create a GlobalNames zone.
Answer: C
Explanation:
To remove ISATAP from the DNS global query block list
1. Click Start, click All Programs, click Accessories, rightclick Command Prompt, and then click Run as administrator.
2. In the Command Prompt window, type dnscmd /config / globalqueryblocklist wpad, and then press ENTER.
3. Close the Command Prompt window.
OR To remove ISATAP from the DNS global query block list on a DNS server
1- Click Start, type regedit.exe, and then press ENTER.
2- In the console tree, open
Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DNS
\Parameters.
3- In the contents pane, double-click the GlobalQueryBlockList value.
4- In the Edit Multi-String dialog box, remove the name ISATAP from the list, and then click
OK.
5- Start a command prompt as an administrator.
6- In the Command Prompt window, run the following commands:
net stop dns
net start dns
http://technet.microsoft.com/en-us/library/ee649158(v=ws.10).aspx
Q259. - (Topic 1)
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
Answer: C
Q260. HOTSPOT - (Topic 4)
Your network contains a server named Server1.
You perform a full server backup by using Windows Server Backup.
You need to test a full server restore.
Which option should you select from the Advanced Boot Options menu? To answer, select the appropriate option in the answer area.
Answer: