MCTS 70-642 Microsoft 70 642: Network Infrastructure 4 — Questions and Answers
Question 1: You need to configure Windows Server 2008 R2 so that remote clients can connect to internal resources without installing a VPN client. Which technology should you implement?
- SSTP VPN
- DirectAccess (Correct answer)
- L2TP/IPsec
- PPTP
Correct answer: DirectAccess
DirectAccess provides transparent, always-on connectivity to corporate resources without requiring users to initiate a traditional VPN connection.
Question 2: Which DHCP option number specifies the default gateway for DHCP clients?
- Option 3 (Correct answer)
- Option 6
- Option 15
- Option 44
Correct answer: Option 3
DHCP Option 3 (Router) specifies the default gateway address that clients should use for routing traffic to other networks.
Question 3: A network administrator configures a Windows Server 2008 R2 DHCP server with a scope of 192.168.1.1 – 192.168.1.254. Three servers require static IPs in this range. What should the administrator configure?
- Remove the static IPs from the DHCP scope
- Configure DHCP exclusions for those IP addresses (Correct answer)
- Configure DHCP reservations for the server MAC addresses
- Create a separate DHCP scope for servers
Correct answer: Configure DHCP exclusions for those IP addresses
DHCP exclusions prevent the DHCP server from assigning specific IP addresses within a scope range, allowing them to be used as static addresses.
Question 4: Which Windows Server 2008 R2 tool is used to manage and monitor DHCP servers, scopes, and leases from a central console?
- Server Manager
- DHCP console (dhcpmgmt.msc) (Correct answer)
- Network and Sharing Center
- Netsh DHCP context
Correct answer: DHCP console (dhcpmgmt.msc)
The DHCP console (dhcpmgmt.msc) provides a graphical management interface for all DHCP server settings, scopes, reservations, and active leases.
Question 5: A DNS server is configured with a zone for contoso.com. Queries for unknown hosts within contoso.com return NXDOMAIN. To allow all unknown hosts to resolve to a single IP, which DNS record should be added?
- A wildcard A record (*.contoso.com) (Correct answer)
- A CNAME record for contoso.com
- A root hint entry
- A glue record
Correct answer: A wildcard A record (*.contoso.com)
A wildcard DNS record (*) matches any hostname not explicitly defined in the zone, directing those queries to the specified IP address.
Question 6: Which IPv6 address type is equivalent to the IPv4 private address ranges and is routable only within an organization?
- Link-local (fe80::/10)
- Unique local (fc00::/7) (Correct answer)
- Global unicast (2000::/3)
- Multicast (ff00::/8)
Correct answer: Unique local (fc00::/7)
Unique local addresses (fc00::/7, commonly fd00::/8) are the IPv6 equivalent of RFC 1918 private IPv4 addresses and are not routed on the global Internet.
Question 7: When configuring Windows Server 2008 R2 as a RADIUS proxy using NPS, what is the purpose of a connection request policy?
- To define which users can log in locally to the NPS server
- To determine where to forward authentication requests based on matching conditions (Correct answer)
- To set bandwidth limits for authenticated users
- To define health policies for NAP clients
Correct answer: To determine where to forward authentication requests based on matching conditions
Connection request policies in NPS determine whether authentication requests are handled locally or forwarded to a remote RADIUS server group based on configured conditions.
MCTS 70-642 Microsoft 70 642: Network Infrastructure 4
You need to configure Windows Server 2008 R2 so that remote clients can connect to internal resources without installing a VPN client.
Which technology should you implement?