3.8

Question 1

This is the authoritative name server for the organization which holds the authoritative DNS database for the organization zones

Answer 1

Primary DNS server

Question 2

The back up authoritative name server for the organization

Answer 2

Secondary DNS server

Question 3

A certain of the accesses public DNS data and cacheé the DNS information it collects. The server receives DNS quarries from local network clients and works to resolve them by contacting other DNS servers for information

Answer 3

Cashing DNS server

Question 4

An optional server that receives queries from local clients but does not work to resolve the queries. Typically This server will maintain its own DNS cache from previous queries and so it might already have the information the client needs

Answer 4

Forwarding DNS server

Question 5

Dearest name service organization global hierarchal structure . At a root level 13 clusters of – – – – – – – hold information used to locate the TLD these TOD net service hold information about the authoritative name service owned by various organizations and how to find them

Answer 5

Root DNS servers

Question 6

 Clients local _________ typically is not the same machine as the authoritative name server for the organizations domain

Answer 6

Caching server

Question 7

This is a query the demands of resolution or the answer it cannot be found

Answer 7

Recursive Look up

Question 8

Inquiries that does not demand Resolution

Answer 8

Interactive look up

Question 9

Listen at the beginning of the zoom file and give me important information about the zone such as contact email address when the zone was last updated how long zone information is available until it should be refreshed and necessary information for how to perform a zone transfer

Answer 9

Start of authority SOA record

Question 10

Yes stores name to address mapping for a host

Answer 10

Address or A record

Question 11

Holds the name to address mapping for IPv6 addresses

Answer 11

Quad a record

Question 12

Hold alternative names for host such as blog that mycomputer.com or shop

Answer 12

CNAME record

Question 13

Use reverse look up also called RDS which provides a host name when you know it’s IP address

Answer 13

PTR or point to record

Question 14

This indicates the authoritative name server for domain is mostly used for delegating subdomains to other name servers

Answer 14

Name server record or NS

Question 15

Identifies an email server and is used for email traffic

Answer 15

Male exchanger record or MX