MCTS 70-642 Microsoft 70 642: Network Infrastructure, Configuring 4 — Questions and Answers
Question 1: A Windows Server 2008 R2 DHCP server is failing to lease addresses. You run 'ipconfig /all' on the server and notice it has an APIPA address. What is the most likely problem?
- The DHCP Server service is stopped
- The DHCP scope is exhausted
- The server cannot reach a domain controller
- The DHCP server itself is not authorized in Active Directory (Correct answer)
Correct answer: The DHCP server itself is not authorized in Active Directory
In an Active Directory environment, a DHCP server must be authorized in AD before it can lease addresses; an unauthorized server will not service client requests.
Question 2: You need to allow remote users to access internal resources without requiring a VPN client installation, using only a web browser. Which solution should you implement?
- L2TP/IPSec VPN
- SSTP VPN
- SSL VPN via Remote Desktop Gateway (Correct answer)
- DirectAccess
Correct answer: SSL VPN via Remote Desktop Gateway
Remote Desktop Gateway (RD Gateway) allows remote users to connect to internal RDP resources over HTTPS using only a web browser or RDP client without a separate VPN client.
Question 3: An administrator configures a DNS server with a GlobalNames zone. What is the purpose of this zone?
- To replace WINS for single-label name resolution across the enterprise (Correct answer)
- To provide reverse lookup for IPv6 addresses
- To cache frequently queried external domains
- To delegate a subdomain to another DNS server
Correct answer: To replace WINS for single-label name resolution across the enterprise
The GlobalNames zone in Windows Server 2008 allows administrators to support single-label name resolution (like WINS) in environments where WINS is being phased out.
Question 4: You need to capture all network traffic passing through a specific network interface on a Windows Server 2008 R2 server for analysis. Which built-in tool should you use?
- Performance Monitor
- Network Monitor (netmon) (Correct answer)
- Reliability Monitor
- Event Viewer
Correct answer: Network Monitor (netmon)
Network Monitor (netmon) is a built-in packet capture tool that captures and analyzes network traffic on Windows Server 2008 R2 interfaces.
Question 5: A DNS zone is configured as Active Directory-integrated. What is a key advantage over a standard primary zone?
- It allows unlimited zone transfers to secondary servers
- It enables multi-master replication and eliminates a single point of failure (Correct answer)
- It reduces DNS query response time
- It automatically creates PTR records for all A records
Correct answer: It enables multi-master replication and eliminates a single point of failure
AD-integrated zones use multi-master replication through AD replication, so any domain controller running DNS can accept updates, eliminating a single point of failure.
Question 6: You need to prevent specific client computers from obtaining IP addresses from a DHCP scope. These clients should be assigned addresses from a different range. What should you configure on the DHCP server?
- Exclusion range
- Superscope
- Reservation for excluded clients
- DHCP filters using MAC addresses (Correct answer)
Correct answer: DHCP filters using MAC addresses
DHCP MAC address filters can be configured in Windows Server 2008 R2 to allow or deny specific MAC addresses from receiving addresses from the server.
Question 7: Which command would you use to display the current routing table on a Windows Server 2008 R2 server?
- netstat -r
- route print
- ipconfig /all
- Both A and B (Correct answer)
Correct answer: Both A and B
Both 'netstat -r' and 'route print' display the IP routing table on Windows Server 2008 R2; they produce the same output.
MCTS 70-642 Microsoft 70 642: Network Infrastructure, Configuring 4
A Windows Server 2008 R2 DHCP server is failing to lease addresses.
You run 'ipconfig /all' on the server and notice it has an APIPA address.
What is the most likely problem?