Virtual Memory and Thrashing MCQs

Prepare for Virtual Memory and Thrashing MCQs with verified questions, past-paper solutions, and conceptual explanations for CSS, PMS, FPSC, PPSC, and NTS examinations.

15 Solved Questions • 12 Mins Practice • Updated for 2026 Competitive Exams
MCQS
2026 Solved Edition · Updated October 2026 · Verified Editorial Standards

Welcome to the verified preparation module for Virtual Memory and Thrashing MCQs on McqsMind. This comprehensive set offers solved multiple-choice questions with answers, detailed explanations, and authentic past-paper style questions aligned with the latest syllabus of Operating Systems (Computer Science).

100% Verified Answer Keys CSS, PMS, FPSC, PPSC, NTS Ready 2026/2027 Syllabus Guidelines

Direct Definition & Conceptual Scope

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Virtual Memory and Thrashing constitutes an essential examination topic within Computer Science, evaluating theoretical principles, historical context, and practical problem-solving applications. On MCQsMind, candidates practice verified past-paper solutions, conceptual breakdowns, and syllabus-aligned questions tailored for CSS, PMS, and competitive screening examinations.

Solved Questions

Practice with answers, explanations, and exam-focused revision notes.

15 MCQs Page 1

High-Yield Exam Revision Cheat Sheet & Mnemonics

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Topic Notes: Virtual Memory and Thrashing

Quick Revision 2 min read 14 key points
Section 1 of 5

1 1. Virtual Memory Fundamentals

4 points
  • Definition
    Virtual Memory: An abstraction that separates logical memory from physical memory, allowing execution of processes larger than available RAM by storing portions on disk.
  • Theory
    Demand Paging: A technique where pages are loaded into memory only when they are requested during execution, reducing initial I/O overhead and memory usage.
  • Fact
    Page Fault: A trap triggered by hardware when a process attempts to access a page not currently present in physical memory, necessitating a disk-to-RAM swap.
  • Theory
    MMU (Memory Management Unit): The hardware component responsible for mapping virtual addresses generated by the CPU to physical addresses in RAM.
Section 1 / 5
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1
Which technique involves loading a process into memory in pieces rather than as a whole?
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2
What is the 'Second Chance' page replacement algorithm a variation of?
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3
What is the purpose of the 'Swap Space' on a hard disk?
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4
What is the main disadvantage of the LRU algorithm?
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5
What is the 'dirty bit' used for in page table entries?
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6
What is the primary purpose of demand paging?
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7
Which policy replaces the page that will not be used for the longest period of time in the future?
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8
What is a 'Page Fault' in an operating system?
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9
Which hardware component is responsible for mapping virtual addresses to physical addresses?
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10
What is the effect of increasing the degree of multiprogramming when the system is already thrashing?
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Pedagogical Syllabus Blueprint

Virtual Memory and Thrashing MCQs: Preparation Strategy & Exam Blueprint

Examination Weightage & Commission Distribution

In Pakistan's premier competitive examinations—including the Federal Public Service Commission (FPSC General Recruitment & CSS MPT), Punjab Public Service Commission (PPSC Lecturer, Tehsildar & PMS Screening), KPPSC, SPSC, and BPSC—questions derived from Virtual Memory and Thrashing MCQs consistently constitute a decisive 10% to 25% weightage of the Operating Systems paper. Testing agencies frequently evaluate both foundational factual recall and deeper analytical comprehension, requiring aspirants to master key dates, statutory articles, constitutional clauses, and thematic definitions.

High-Yield Conceptual Pillars & Distractor Analysis

Historical trend analysis across past five-year examination cycles demonstrates that examiner traps frequently involve closely matched numerical alternatives, chronologically contiguous treaties, and semantic subtleties in statutory phraseology. When preparing Virtual Memory and Thrashing MCQs, candidates must deliberately review the underlying rationale provided for every question rather than merely memorizing raw answer options. Understanding why incorrect distractors fail is the most reliable predictor of achieving top percentiles in computerized and optical mark recognition (OMR) screening tests.

Negative Marking Mitigation & Time Management Protocol

For examinations enforcing negative marking penalties (such as PPSC's 0.25-mark deduction per erroneous response or NTS gatekeeper quotas), an aggressive elimination technique must be deployed. Candidates should systematically rule out improbable options first to elevate probability thresholds from 25% to 50% or 100%. Allocating an average of 45 to 60 seconds per item during mock trials builds the psychological stamina and cognitive precision required to complete 100-question papers within official 90-minute time limits.

Recommended Reference Sources & Statutory Reading

To achieve definitive conceptual mastery in Computer Science, candidates are advised to cross-reference our solved explanations with primary gazettes, statutory texts, and canonical academic textbooks. Verifying controversial questions against authentic official repositories guarantees that prospective civil servants and professional candidates present incontestable answers during both optical paper evaluations and viva voce departmental interviews.