ISC2 CC Network Security Practice Question
A security analyst is reviewing network traffic and notices that some devices are using a protocol that does not guarantee delivery and has no error recovery. Which ONE transport layer protocol fits this description? (Select ONE)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
UDP
UDP (User Datagram Protocol) is a transport layer protocol that does not guarantee delivery and has no error recovery. TCP is connection-oriented and provides reliability. HTTP and ARP are not transport layer protocols. ICMP operates at the network layer, not the transport layer. Therefore, UDP correctly fits the description.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
TCP
Why it's wrong here
TCP provides reliable, connection-oriented delivery with error recovery, so it does not fit.
- ✗
HTTP
Why it's wrong here
HTTP is an application layer protocol, not a transport layer protocol.
- ✗
ICMP
Why it's wrong here
ICMP operates at the network layer, not the transport layer, so it is not a transport layer protocol.
- ✓
UDP
Why this is correct
UDP is a transport layer protocol that is connectionless and does not guarantee delivery or provide error recovery, fitting the description perfectly.
- ✗
ARP
Why it's wrong here
ARP is a network layer protocol for address resolution, not a transport layer protocol.
Visual reference
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Related to this question
Learn chapter
Introduction to Security Principles
Key term
Recovery
Recovery is the process of restoring systems, data, and operations after a security incident, failure, or disaster to return to normal functioning.
Key term
User
A user is any person, system, or device that interacts with an IT service, resource, or identity system, typically authenticated through credentials and authorized to perform specific actions.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CC practice question is part of Courseiva's free ISC2 certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CC exam.