Domain Name System

Question 1

What are examples of Top Level domains?

Answer 1

.edu, .gov, .mil, .com

Question 2

What are examples of Country domains?

Answer 2

.ca, .fi, .pl, .is

Question 3

What does Domain Name System refer to?

Answer 3

refers to both a protocol as well as a system

Protocol - corresponds domain name with the IP Address

System - Keeps track of who “owns” each public IP address and the mapping of IP addresses to a domain name (ex. 12.33.100.68 = att.net)

Question 4

Generic domain v. Sponsored domain

Answer 4

Generic - anyone can grab it as long as they aren’t used (.com, .net, .info)
Sponsored - must go to the organization to get permission to use (.gov, .mil, .edu)

Question 5

**What are Regional Internet Registries?

Answer 5

Geographical proxys for IANA (Internet Assigned Numbers Authority)

IANA gave IP addresses to Geographical authorities so they could assign them in their own regions (North America, Europe+Middle East, Asia-Pacific, Latin America-Caribbean, Africa)