Chapter 4

Question 1

What will transfer all records within a zone from a primary server to a secondary server.

Answer 1

full zone transfer (AXFR) [63]

Question 2

What creates an alias for an existing A record.

Answer 2

CNAME Record [73]

Question 3

What is used by e-mail systems such as Microsoft Exchange to locate mail servers in different networks.

Answer 3

Mail Exchanger (MX) record [73]

Question 4

What allows IPv6 hosts to map host names to IP addresses.

Answer 4

AAAA Record [75]

Question 5

contoso.com is an example of what within the .com top-level domain.

Answer 5

second-level domain [60]

Question 6

What application scope will replicate DNS data to all DNS servers within a domain.

Answer 6

Domain DNS Zones [67]

Question 7

What stores DNS data in a text file on the server hard drive, rather than as part of Active Directory.

Answer 7

Standard or file-backed zone [66]

Question 8

What indicates the maximum time that a record will be cached by a DNS server before it is discarded.

Answer 8

Time to Live (TTL) [72]

Question 9

A DNS server is considered what for each zone that it hosts.

Answer 9

authoritative [61]

Question 10

A DNS domain name like .uk or .it is an example of what type of domain.

Answer 10

country code [59]

Question 11

This DNS configuration item will forward DNS queries to different servers based on the domain name of the query.

Answer 11

Conditional forwarder [85]

Question 12

This type of zone takes human-readable FQDNs and translates them into IP addresses.

Answer 12

Forward lookup zone [63]

Question 13

This zone is used in combination with IP addresses to resolve queries for IPv4 IP addresses:

Answer 13

in-addr.arpa [64]

Question 14

The IPv6 DNS host record is referred to as a(n):

Answer 14

AAAA record [75]

Question 15

A DNS server that hosts a primary or secondary zone containing a particular record can issue the following response to a query for that record:

Answer 15

Authoritative answer [80]

Question 16

You can secure an Active Directory-integrated DNS server, zone, or record by applying the following to it:

Answer 16

Discretionary Access Control List DACL [66]

Question 17

This zone type contains only SOA, name server, and glue records for the relevant zone.

Answer 17

Stub zone [64]

Question 18

Data from a primary zone is transmitted to secondary zones using the following:

Answer 18

Zone transfer [68]

Question 19

These contain the names and IP addresses of the DNS servers authoritative for the root zone.

Answer 19

Root Hints [81]

Question 20

The following feature is available only on Active Directory-integrated DNS zones:

Answer 20

Secure dynamic updates [79]

Question 21

What is the command to clear the DNS cache on a DNS server?

Answer 21

dnscmd /clearcache

Question 22

What is the command to clear the DNS cache on a normal workstation?

Answer 22

ipconfig /flushdns

Question 23

What are DNS zone file resource records are represented as?

Answer 23

text entries [71]

Question 24

Which zone is a copy of a zone that contains only those resource records necessary to identify the authoritative DNS servers for that zone?

Answer 24

stub zone [64]