ISC2 CC Network Security Practice Question
A technician is configuring a firewall to allow secure web traffic. Which port and protocol should be permitted?
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 port 443
HTTPS uses port 443 and TLS/SSL for encryption.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
UDP port 443
Why it's wrong here
HTTPS uses TCP, not UDP.
- ✗
TCP port 80
Why it's wrong here
Port 80 is for HTTP, which is unencrypted.
- ✓
TCP port 443
Why this is correct
HTTPS uses TCP port 443.
- ✗
TCP port 22
Why it's wrong here
Port 22 is for SSH.
Go deeper
Related to this question
Learn chapter
Secure Network Architecture and Design
Key term
Transport Layer Security
Transport Layer Security (TLS) is a cryptographic protocol that provides secure, encrypted communication between two devices over a network, such as between a web browser and a server.
Key term
Hypertext Transfer Protocol Secure
Hypertext Transfer Protocol Secure, or HTTPS, is the secure version of HTTP that encrypts data between a web browser and a website using SSL/TLS to protect sensitive information like passwords and credit card numbers.
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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.