MCTS 70-642 Microsoft 70 642: Network Infrastructure 5 — Questions and Answers
Question 1: You need to configure Windows Server 2008 R2 to assign IPv6 addresses automatically to clients without using DHCPv6. Which mechanism should you enable on the router?
- DHCPv6 stateless mode
- Stateless Address Autoconfiguration (SLAAC) (Correct answer)
- 6to4 tunneling
- ISATAP
Correct answer: Stateless Address Autoconfiguration (SLAAC)
SLAAC allows IPv6 hosts to generate their own addresses from the network prefix advertised in Router Advertisement messages without a DHCPv6 server.
Question 2: A Windows Server 2008 R2 DNS server is receiving excessive recursive queries from the Internet. Which configuration change should be made to secure the server?
- Disable dynamic updates on all zones
- Restrict recursion to internal IP addresses only (Correct answer)
- Enable DNSSEC on all zones
- Remove all root hints
Correct answer: Restrict recursion to internal IP addresses only
Restricting recursion to a list of trusted IP addresses prevents the DNS server from being used as an open resolver for external DNS amplification attacks.
Question 3: An administrator needs to view all active RRAS connections and their statistics on a Windows Server 2008 R2 server. Which tool provides this information?
- netstat -a
- Routing and Remote Access console (Correct answer)
- Network Monitor
- Performance Monitor with RAS counters
Correct answer: Routing and Remote Access console
The Routing and Remote Access console displays all active remote access connections, including client details, duration, and bytes transferred.
Question 4: Which Windows Server 2008 R2 feature enables administrators to capture and analyze network traffic without installing third-party software?
- Network Monitor 3.4 (Correct answer)
- Wireshark integration
- Message Analyzer
- Network and Sharing Center diagnostics
Correct answer: Network Monitor 3.4
Microsoft Network Monitor 3.4 is a free downloadable tool that captures and analyzes network packets on Windows Server 2008 R2.
Question 5: You configure a DHCP scope with a lease duration of 8 days. At what point will a client first attempt to renew its lease?
- After 2 days
- After 4 days (Correct answer)
- After 6 days
- After 7 days
Correct answer: After 4 days
DHCP clients attempt to renew their lease at 50% of the lease duration (T1), which for an 8-day lease is after 4 days.
Question 6: Which Windows Server 2008 R2 command-line tool can be used to add, delete, and display static routes in the IP routing table?
- netsh routing
- route (Correct answer)
- pathping
- tracert
Correct answer: route
The 'route' command (route add, route delete, route print) is used to manipulate the IP routing table on Windows systems.
Question 7: A network policy on a Windows Server 2008 R2 NPS server denies access to users who connect after business hours. Where is this time-of-day restriction configured?
- Connection request policy conditions
- Network policy conditions (Correct answer)
- RADIUS client properties
- User account dial-in settings
Correct answer: Network policy conditions
Time-of-day and day-of-week restrictions are configured as conditions within a Network Policy in NPS, not in connection request policies.
MCTS 70-642 Microsoft 70 642: Network Infrastructure 5
You need to configure Windows Server 2008 R2 to assign IPv6 addresses automatically to clients without using DHCPv6.
Which mechanism should you enable on the router?