MCTS 70-640 DNS & Name Resolution for Active Directory

Question 1

Which DNS record type is required for domain controllers to be located by clients in Active Directory?

Accepted Answer

SRV record

Answer

SRV (Service Locator) records are registered by domain controllers so clients can locate AD services like LDAP and Kerberos.

Question 2

Which tool is used to manually register DNS SRV records for a domain controller on Windows Server 2008?

Accepted Answer

ipconfig /registerdns

Answer

Running 'ipconfig /registerdns' forces the DNS client and Netlogon service to re-register all DNS records for the domain controller.

Question 3

What is the purpose of a stub zone in DNS?

Accepted Answer

To contain only NS, SOA, and A records for a zone to resolve names in that zone

Answer

A stub zone holds only NS, SOA, and glue A records so the DNS server knows the authoritative servers for that zone.

Question 4

Which DNS zone type automatically replicates zone data to all DNS servers running on domain controllers in the forest?

Accepted Answer

Active Directory-integrated zone with ForestDNSZones scope

Answer

Forest-wide AD-integrated zones replicate through the ForestDNSZones application partition to all DNS-enabled DCs across the entire forest.

Question 5

What command verifies that a domain controller has registered its DNS SRV records correctly?

Accepted Answer

nslookup -type=SRV _ldap._tcp.<domain>

Answer

Using nslookup with the SRV type query against _ldap._tcp.<domain> confirms that the DC's LDAP SRV records are present and resolving.

MCTS 70-640 Exam Practice Test