A security system that monitors network traffic and blocks unauthorized access based on defined rules. What is this concept called?
Difficulty: Easy
About this MCQ
This Easy Cyber Security question asks: A security system that monitors network traffic and blocks unauthorized access based on defined rules. What is this concept called? The correct choice is C. Firewall (security control). Read the options below, commit to one, then use the explanation to see why that choice holds and why the others do not.
Cyber Security items like this one are written for Pakistan exams such as CSS, FPSC, PPSC, and NTS. The difficulty label is a hint about how much of the topic the stem assumes, not a score. Tags and exam names, when they are present, tell you where else the same idea is tested. Previous and next links stay in Cyber Security so you can continue the subject. Related questions point at nearby stems if you want another angle on the same idea.
Treat the explanation as part of the question, not a footnote. If you missed it, reread the stem against the correct option before you open the next Cyber Security item. A timed quiz is the same pool with a clock and a score. A past paper is a full sitting rather than this single question.
- A. Zero-day vulnerability
Why not A: “Zero-day vulnerability” does not fit this question. The answer is Firewall (security control).
- B. Encryption
Why not B: “Encryption” does not fit this question. The answer is Firewall (security control).
- C. Firewall (security control) ✓
- D. Two-factor authentication (2FA)
Why not D: “Two-factor authentication (2FA)” does not fit this question. The answer is Firewall (security control).
Correct answer
C. Firewall (security control)
Explanation
Firewall (security control) (option C) is the accepted answer to “A security system that monitors network traffic and blocks unauthorized access based on defined rules. What is this concept called”. Option A (Zero-day vulnerability) does not fit this question. Option B (Encryption) does not fit this question. Option D (Two-factor authentication (2FA)) does not fit this question. For this Cyber Security question, the accepted answer is Firewall (security control).
Source: Cyber Security Official Reference Guide
Tags: computer science, cyber security, information security, network security
Submitted by: MCQsHub Editorial
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