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Case Studies & Practical Application Flashcards

7 cards from real MCTS 70-642 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. A Windows Server 2008 R2 network has WINS deployed for legacy NetBIOS name resolution. After decommissioning one WINS server, some clients can no longer resolve NetBIOS names. What should the administrator verify?

    Answer: That the remaining WINS server is listed as both primary and secondary WINS on affected clients

    Clients configured with the decommissioned server as primary WINS will fail if no secondary is set or if the secondary is not the surviving server.

  2. After enabling QoS policies via Group Policy on a Windows Server 2008 R2 network, VoIP traffic still does not receive priority. The DSCP markings are applied by the server but ignored by the network. What must be verified on the network infrastructure?

    Answer: That network switches and routers are configured to honor DSCP markings

    DSCP markings set by Windows QoS policies are only effective if routers and switches are configured to read and act on those DSCP values.

  3. A company runs a Windows Server 2008 R2 web server in a perimeter network (DMZ). The server can reach the internet but cannot communicate with the internal DNS server. The administrator wants the web server to resolve internal names. What is the correct approach without opening broad access?

    Answer: Configure a DNS forwarder on the DMZ server pointing only to the internal DNS server with a firewall rule allowing TCP/UDP 53

    A targeted forwarder with a specific firewall rule allows the DMZ server to resolve internal names while minimizing the security exposure of the DMZ.

  4. A Windows Server 2008 R2 administrator uses Netsh to capture network traces on a server that does not have Network Monitor installed. Which Netsh context provides packet capture functionality?

    Answer: netsh trace

    The 'netsh trace' context in Windows Server 2008 R2 allows administrators to start, stop, and manage ETW-based network packet captures without additional tools.

  5. A company's remote offices connect to headquarters using L2TP/IPsec VPNs. After a firewall replacement at headquarters, L2TP/IPsec VPNs fail to establish, but PPTP VPNs work. What ports must be opened for L2TP/IPsec?

    Answer: UDP 1701 and UDP 500 and UDP 4500

    L2TP/IPsec requires UDP 1701 for L2TP, UDP 500 for IKE, and UDP 4500 for NAT-T when a NAT device is present.

  6. A Windows Server 2008 R2 DHCP server is configured with a failover using split scope across two servers. Server A has addresses .1-.150 and Server B has .151-.254. During a planned maintenance window, Server A goes offline. Which clients are affected?

    Answer: Only new clients requesting leases during the maintenance window

    Split scope is not true failover; existing leases remain valid until they expire, but Server B can only assign addresses from its own range during Server A's outage.

  7. An administrator needs to prevent a specific computer from ever receiving an IP address from the DHCP server. The computer has a fixed MAC address. What is the most direct method using Windows Server 2008 R2 DHCP?

    Answer: Add the MAC address to a DHCP filter deny list

    The DHCP server's Allow/Deny filter list can block specific MAC addresses from receiving any IP address from the server.