A numerical identifier used to distinguish specific processes or services running on a networked device. What is this concept called?
Difficulty: Medium
About this MCQ
This Medium Computer Networks MCQ checks one syllabus fact.
The question is: “A numerical identifier used to distinguish specific processes or services running on a networked device. What is this concept called?”
The accepted answer is D. Port number. “A numerical identifier used to distinguish specific processes or services running on a networked device. What is this concept called” is answered by Port number (option D). Option A (“WAN”) does not match the stem; it is a near-miss used to catch incomplete recall of Port number. Option B (“Proxy server”) does not match the stem; it is a near-miss used to catch incomplete recall of Port number. Remaining alternatives (Network latency) fall outside the same rule and should be eliminated once Port number is identified. Computer Networks questions of this type reward precise definitions rather than approximate associations. Computer Networks recall of this distinction is a regular item in FPSC, PPSC, NTS, and CSS papers.
- A. WAN
Why not A: “WAN” is not correct. The accepted answer is D. Port number. “A numerical identifier used to distinguish specific processes or services running on a networked device. What is this concept called” is answered by Port number (option D). Option
- B. Proxy server
Why not B: “Proxy server” is not correct. The accepted answer is D. Port number. “A numerical identifier used to distinguish specific processes or services running on a networked device. What is this concept called” is answered by Port number (option D). Option
- C. Network latency
Why not C: “Network latency” is not correct. The accepted answer is D. Port number. “A numerical identifier used to distinguish specific processes or services running on a networked device. What is this concept called” is answered by Port number (option D). Option
- D. Port number ✓
Correct answer
D. Port number
Explanation
“A numerical identifier used to distinguish specific processes or services running on a networked device. What is this concept called” is answered by Port number (option D). Option A (“WAN”) does not match the stem; it is a near-miss used to catch incomplete recall of Port number. Option B (“Proxy server”) does not match the stem; it is a near-miss used to catch incomplete recall of Port number. Remaining alternatives (Network latency) fall outside the same rule and should be eliminated once Port number is identified. Computer Networks questions of this type reward precise definitions rather than approximate associations. Computer Networks recall of this distinction is a regular item in FPSC, PPSC, NTS, and CSS papers.
Source: Computer Networks Official Reference Guide
Tags: computer science, computer networks, networking, protocols
Submitted by: MCQsHub Editorial
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