DNS resolution

Question 1

What is the function of the DNS resolver server?

Answer 1

Interpret the destination IP address from a domain URL.

Question 2

What is the function of the DNS root nameserver?

Answer 2

Find the TLD server corresponding to the DNS query.

Question 3

What is the function of the TLD server?

Answer 3

Find the IP for the specified domain and return it.

Question 4

What is the order of DNS resolution?

Answer 4

• URL recieved by DNS resolver server
• DNS resolver server queries root nameserver
• Root nameserver responds to DNS resolver with TLD server address
• DNS resolver server queries TLD server
• TLD server responds with IP corresponding to URL
• IP is now resolved.