- A
HTTP: 80
HTTP uses port 80 by default for web traffic.
- B
HTTPS: 443
HTTPS uses port 443 for secure web traffic.
- C
FTP: 21
FTP control uses port 21.
- D
SSH: 22
SSH uses port 22 for secure remote access.
- E
HTTP: 443
Why wrong: Incorrect — port 443 is used by HTTPS, not HTTP.
- F
FTP: 22
Why wrong: Incorrect — port 22 is used by SSH, not FTP.
Question 461 of 520
N10-009 Networking Concepts Practice Question
This N10-009 practice question tests your understanding of networking concepts. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
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
Common well-known ports: HTTP=80, HTTPS=443, FTP=21, SSH=22. The distractors swap these assignments.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 uses port 80 by default for web traffic.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
HTTPS: 443
Why this is correct
HTTPS uses port 443 for secure web traffic.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
FTP: 21
Why this is correct
FTP control uses port 21.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
SSH: 22
Why this is correct
SSH uses port 22 for secure remote access.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
HTTP: 443
Why it's wrong here
Incorrect — port 443 is used by HTTPS, not HTTP.
- ✗
FTP: 22
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the N10-009 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which N10-009 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
- →
Networking Concepts — study guide chapter
Learn the concepts, then practise the questions
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FAQ
Questions learners often ask
What does this N10-009 question test?
Networking Concepts — This question tests Networking Concepts — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: HTTP: 80 — Common well-known ports: HTTP=80, HTTPS=443, FTP=21, SSH=22. The distractors swap these assignments.
What should I do if I get this N10-009 question wrong?
Identify which N10-009 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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Last reviewed: Jun 11, 2026
This N10-009 practice question is part of Courseiva's free CompTIA 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 N10-009 exam.
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