MCTS 70-640 DNS & Name Resolution for Active Directory 2

Question 1

What is a conditional forwarder in DNS?

Accepted Answer

A DNS server that forwards queries for a specific domain to designated servers

Answer

A forwarder that only works during business hours

Answer

A secondary zone that forwards updates to the primary

Answer

A forwarder that strips DNSSEC signatures

Question 2

In Windows Server 2008 DNS, what does enabling 'dynamic updates' set to 'Secure only' enforce?

Accepted Answer

Only domain-joined computers authenticated via Kerberos can update their DNS records

Answer

Only administrators can update DNS records

Answer

Only IPv6 records can be dynamically updated

Answer

Only DCs can register DNS records

Question 3

Which application partition stores DNS zone data replicated only to domain controllers within the same domain?

Accepted Answer

DomainDNSZones

Answer

ForestDNSZones

Answer

Schema partition

Answer

Configuration partition

Question 4

What happens when a DNS server cannot resolve a query and no forwarder is configured?

Accepted Answer

The DNS server uses root hints to contact authoritative servers on the Internet

Answer

The query is dropped silently

Answer

The client retries indefinitely

Answer

An error is logged and no response is sent

Question 5

Which DNS record maps an IPv4 address back to a hostname in reverse lookup zones?

Accepted Answer

PTR record

Answer

A record

Answer

AAAA record

Answer

CNAME record

Question 6

When configuring DNS on a new Windows Server 2008 domain controller, which zone should be created to support AD DS?

Accepted Answer

A forward lookup zone for the AD domain

Answer

A reverse lookup zone only

Answer

An MX-only zone

Answer

A secondary zone pointing to the PDC