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25
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200-201 Practice Question: Match each network protocol to its well-known…
Match each network protocol to its well-known port number.
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
✓
HTTP: 80
Standard well-known port assignments: HTTP=80, HTTPS=443, SSH=22, DNS=53. Common confusions include swapping HTTP/HTTPS ports or confusing SSH with Telnet.
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: 80
Why this is correct
HTTP (Hypertext Transfer Protocol) uses port 80 for web traffic.
- ✓
HTTPS: 443
Why this is correct
HTTPS (HTTP Secure) uses port 443 for encrypted web traffic.
- ✓
SSH: 22
Why this is correct
SSH (Secure Shell) uses port 22 for secure remote administration.
- ✓
DNS: 53
Why this is correct
DNS (Domain Name System) uses port 53 for name resolution.
- ✗
HTTP: 443
Why it's wrong here
Incorrect — port 443 is assigned to HTTPS, not HTTP.
- ✗
SSH: 23
Why it's wrong here
Incorrect — port 23 is assigned to Telnet, not SSH.
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This 200-201 question is part of Courseiva's 979-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-201 practice question is part of Courseiva's free Cisco 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 200-201 exam.