Isaiec 62443 Cybersecurity Fundamentals Specialist · Free Practice Question Easy
Question 17
UDP is a ___________ protocol
- A Layer 7
- B Send and forget
- C Layer 4
- D Layer 3
Reveal correct answer
Correct answer: C
Explanation
UDP (User Datagram Protocol) is considered a Layer 4 (Transport Layer) protocol, just like TCP. However, UDP operates differently from TCP in that it provides a connectionless protocol for sending datagrams (packets) between devices on an IP network. Unlike TCP, UDP does not guarantee delivery or provide mechanisms for error recovery, retransmission, or flow control. Instead, UDP is often used for applications where speed and efficiency are prioritized over reliability, such as real-time streaming, online gaming, and DNS (Domain Name System) queries.Discussion
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