DNS

Question 1

Authoritative

Answer 1

Final source of DNS data for a domain

Question 2

Non-Authoritative

Answer 2

Provides info from cache or relayed from elsewhere

Question 3

Primary DNS Server

Answer 3

Read/write, original source of DNS records

Question 4

Secondary DNS Server

Answer 4

Read-only copy, used for backup/load balancing

Question 5

Recursive DNS

Answer 5

Resolver that does all the querying on your behalf to get the final answer