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

A record

Answer

MX record

Answer

PTR record

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

nltest /dsregdns

Answer

net logon restart

Answer

dcdiag /fix

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

To cache all records from a primary zone

Answer

To block external DNS queries

Answer

To replicate all DNS records to all domain controllers

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

Standard primary zone

Answer

Standard secondary zone

Answer

Active Directory-integrated zone with DomainDNSZones scope

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

ping <domain>

Answer

tracert <dc>

Answer

netstat -an

Question 6

Which DNS feature prevents clients from receiving stale cached records by enforcing a maximum record age?

Accepted Answer

Scavenging

Answer

Dynamic updates

Answer

Forwarders

Answer

Conditional forwarding