Configuring DNS for Active Directory - MCTS Guide to Microsoft Windows Server 2008 Active Directory Configuration - page 395

18. You manage the DNS structure on your network. The network security group has decided
that only one DNS server should contact the Internet. Under no circumstances should
other servers contact the Internet for DNS queries, even if the designated server is down.
You have decided that the DNS server named DNS-Int should be the server allowed to
contact the Internet. How should you configure your DNS structure to accommodate
these requirements?
a. On each DNS server except DNS-Int, configure a forwarder pointing to DNS-Int.
Configure DNS-Int as a forwarder by enabling forwarded requests in the Forwarders tab
of the server's Properties dialog box.
b. On each DNS server except DNS-Int, configure a root hint to point to DNS-Int and
delete all other root hints. Configure a root zone on DNS-Int.
c. On each DNS server except DNS-Int, configure a forwarder pointing to DNS-Int.
Disable the use of root hints if no forwarders are available. No changes are necessary on
DNS-Int.
d. On each DNS server except DNS-Int, in the Advanced tab of the server's Properties
dialog box, disable recursion. No changes are necessary for DNS-Int.
19. You have a zone containing two A records for the same hostname, but each A record has a
different IP address configured. The host records point to two servers hosting a high-traffic
Web site, and you want the servers to share the load. After some testing, you find that you're
always accessing the same Web server, so load sharing isn't occurring. What can you do to
solve the problem?
a. Enable the load sharing option on the zone.
b. Enable the round robin option on both A records.
c. Enable the load sharing option on both A records.
d. Enable the round robin option on the server.
20. Which is the correct order in which a DNS client tries to resolve a name?
a. Cache, DNS server, Hosts file
b. Hosts file, cache, DNS server
c. Cache, Hosts file, DNS server
d. DNS server, cache, Hosts file
21. You want to verify whether a PTR record exists for the AHost.ADomain.com host, but you
don't know the IP address. Which of the following commands should you use?
a. Ping -a AHost.ADomain.com, and then Ping IPAddress returned from the first Ping
b. Nslookup AHost.ADomain.com, and then Nslookup IPAddress returned from the first
Nslookup
c. Dnscmd /PTR AHost.ADomain.com
d. Dnslint /PTR AHost.ADomain.com
22. You have been communicating with ComputerB from your workstation for the past sev-
eral hours. A colleague informs you that he has just made some changes to the IP address-
ing scheme on the network where ComputerB is located. You find that you can no longer
communicate with ComputerB. What tool can you use on your workstation to solve the
problem?
a. Ping
b. Nslookup
c. Ipconfig
d. Dnslint
23. To resolve a query, a DNS server looks in its local cache first. True or False?

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