MCTS 70-642 DNS Configuration & Name Resolution

Question 1

Which DNS record type maps a hostname to an IPv4 address?

Accepted Answer

A

Answer

An A record (Address record) maps a fully qualified domain name to an IPv4 address in DNS.

Question 2

Which DNS record type is used for reverse DNS lookups to resolve an IP address to a hostname?

Accepted Answer

PTR

Answer

PTR (Pointer) records are used in reverse DNS zones to map IP addresses back to hostnames.

Question 3

What is the default TTL (Time to Live) unit for DNS records in Windows Server 2008?

Accepted Answer

Seconds

Answer

DNS TTL values in Windows Server 2008 are expressed in seconds, controlling how long records are cached.

Question 4

Which DNS zone type stores zone data in Active Directory rather than a text file?

Accepted Answer

Active Directory-integrated

Answer

Active Directory-integrated zones store DNS data in the AD database, enabling secure dynamic updates and multi-master replication.

Question 5

What command-line tool is used in Windows Server 2008 to query DNS records and troubleshoot name resolution?

Accepted Answer

nslookup

Answer

nslookup is the standard Windows command-line utility for querying DNS servers and diagnosing DNS resolution problems.

MCTS 70-642 Exam Practice Test