World of Computer Networking Your CCNA start - Working of Domain Name System (DNS) between Client and Server

The video tutorial explains the DNS communication process between a client and server using UDP. It covers how DNS requests and responses are handled, including the use of random UDP ports and the role of IP addresses. The tutorial also discusses network address translation (NAT) and its impact on DNS communication. Additionally, it introduces DNS resolvers and the Nslookup utility for resolving domain names to IP addresses.

What protocol is used for DNS communication between a client and a server?

• HTTP

• UDP

• TCP

• FTP

How does a DNS client typically obtain the IP address of a DNS server?

• Through a web browser

• Via DHCP

• Manually configured

• Using a static IP

What is the well-known destination UDP port for DNS requests?

• 25

• 443

• 80

• 53

What is the role of DNS resolvers in the DNS communication process?

• They store website content

• They resolve domain names to IP addresses

• They manage email servers

• They provide internet access

Which utility can be used to resolve domain names to IP addresses via the command line?

• Traceroute

• Ping

• Netstat

• Nslookup