ISC2 CC Network Security Practice Question
Which of the following protocols operates at the Transport layer and provides reliable, connection-oriented communication?
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
✓
TCP
TCP provides reliable delivery via acknowledgments and retransmissions, and uses a three-way handshake to establish a connection. UDP is connectionless and unreliable.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
HTTP
Why it's wrong here
HTTP is an Application layer protocol.
- ✓
TCP
Why this is correct
TCP provides reliable, connection-oriented communication.
- ✗
IP
Why it's wrong here
IP operates at the Network layer.
- ✗
UDP
Why it's wrong here
UDP is connectionless and unreliable.
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JA
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.