9. UDP

Question 1

What does UDP stand for, and what is its primary characteristic?

Answer 1

UDP stands for User Datagram Protocol, and it is connectionless, meaning it
does not establish a connection before sending data.

Question 2

Why is UDP faster than TCP?

Answer 2

UDP has minimal overhead as it does not provide error recovery,
acknowledgment, or retransmission, making it faster for time-sensitive
applications.

Question 3

What types of applications typically use UDP?

Answer 3

Real-time applications like DNS, VoIP, online gaming, and video streaming
use UDP.

Question 4

How does UDP handle multiplexing for multiple applications?

Answer 4

UDP uses port numbers to differentiate and direct traffic to the correct
application on a device.

Question 5

What is the size of the UDP header, and why is it fixed?

Answer 5

The UDP header is 8 bytes, fixed to keep the protocol simple and lightweight.