Week 11 UAS

Question 1

Name Format in DNS?

Answer 1

domain.zone

zone in the right element, also known as Top level
the next segment is called domain and regulated by ICANN. must be uniques.

2 Top-Level Domain:

1. TLD generic (.com, .net, .org)
2. country code (.uk, .de, .jp)

Question 2

DNS system consists of three component:

Answer 2

1. DNS data (Resource Records)
2. Servers (Name Servers)
3. Protocol

Question 3

explain DNS?

Answer 3

• Top Level Domains are in the top and the maximum tree depth is 158
• Domains are sub trees (.edu, univ.edu, ece.univ.edu)
• Name collisions must be avoided.

Question 4

What is name-address resolution?

Answer 4

mapping a name to an address or an address to a name

Question 5

2 types of Resolution?

Answer 5

1. Recursive resolution

2. Iterative resolution