DNS

Question 1

What is DNS?

Answer 1

Domain Name System

Question 2

What is the DNS cache used for on the server side?

Answer 2

Storing information learned from another DNS server to temporarily negate additional requests
(Client-Server relationship)

Question 3

What are the DNS record types?

Answer 3

A, AAAA, MX, CNAME, PTR

Question 4

What does DNS A record stand for?

Answer 4

Address Record

IPv4

Question 5

What does DNS AAAA record stand for?

Answer 5

Address Record

IPv6

Question 6

What does DNS MX record stand for?

Answer 6

Mail Exchange
(email servers)

Question 7

What does DNS CNAME record stand for?

Answer 7

Canonical Name Record
Alias from one name to another
gogle.com > google.com

Question 8

What does DNS PTR record stand for?

Answer 8

Pointer Record
Reverse lookup (IP address > name)

Question 9

What is Dynamic DNS?

Answer 9

Mapping a fixed name to a changing public IP address

Router behind the IP is reporting it’s new IP to a dynamic DNS serveer

Question 10

What is the windows command to view DNS cache?

Answer 10

ipconfig /displaydns

Question 11

What is the windows command to delete the DNS cache?

Answer 11

ipconfig /flushdns

Question 12

What is the windows command to resolve an IP address from an address?

Answer 12

nslookup

Question 13

What is the windows command to specify the DNS resolution record type?

Answer 13

nslookup

set type=