World of Computer Networking Your CCNA start - Domain Name System (DNS) in a Nutshell

The video tutorial explains the Domain Name System (DNS), which is crucial for the Internet's functionality. DNS resolves domain names to IP addresses, enabling data transmission over networks. The tutorial covers client-side interactions with DNS, including how DNS requests and responses work, and how DNS can facilitate load balancing by offering multiple IP addresses. It also introduces the broader DNS infrastructure, including root name servers, top-level domain servers, and authoritative name servers.

What does DNS primarily do?

• It manages email servers.

• It resolves domain names to IP addresses.

• It encrypts data for secure transmission.

• It provides internet access.

What is the role of a DNS server in client-side interaction?

• To resolve domain names to IP addresses.

• To provide internet speed.

• To store website content.

• To manage network traffic.

How does DNS help in load balancing?

• By managing server resources.

• By providing multiple IP addresses for a domain.

• By increasing internet speed.

• By encrypting data packets.

Which of the following is NOT a part of the DNS infrastructure?

• Root name servers

• Authoritative name servers

• Email servers

• Top-level domain name servers

What is the main function of DNS in the internet infrastructure?

• To manage email traffic.

• To provide internet access.

• To resolve domain names to IP addresses.

• To encrypt data.