World of Computer Networking Your CCNA start - Domain Name System (DNS) Registry versus Library

The video tutorial explains DNS name resolution by comparing it to a library system. It describes how a DNS client queries a DNS server for an IP address, similar to a librarian finding a book. The DNS resolver interacts with various name servers, akin to a librarian consulting different sections of a library. The tutorial emphasizes the importance of multiple name servers and introduces the concept of a hierarchical DNS registry.

What is the primary role of a DNS client in the DNS name resolution process?

• To store IP addresses

• To query the DNS server for an IP address

• To manage domain registrations

• To act as a librarian

In the library analogy, what does the DNS resolver represent?

• A library index

• A bookshelf

• A book

• A librarian

What is the function of the TLD nameserver in the DNS process?

• To store all domain names

• To resolve IP addresses directly

• To point to the authoritative nameserver

• To act as a DNS client

How does the DNS resolver find the specific IP address in the analogy?

• By directly contacting the authoritative nameserver

• By storing all IP addresses locally

• By querying the library index and following a path to the authoritative nameserver

• By using a random search method

Why is it important to have multiple name servers in different locations?

• To store more IP addresses

• To reduce the cost of DNS management

• To ensure redundancy and reliability in DNS resolution

• To increase the speed of domain registration