Match List I with List II : List I (Concept) List II (Description) (A) Least…

2022

Match List I with List II :

List I (Concept)

List II (Description)

(A) Least Frequently Used (LFU)

(I) A system architecture where memory is distributed among processors; each processor has its own local memory.

(B) Critical Section

(II) A page replacement policy used in cache memory or virtual memory management to decide which block to remove.

(C) Loosely Coupled Multiprocessor System

(III) A program section that, once begun, must complete execution before another processor or process can access the same shared resource.

(D) Distributed Operating System Organization

(IV) An organization where O/S routines and control functions are distributed among various physical processors.

Choose the correct answer from the options given below :

  1. A.

    (A)-(III), (B)-(II), (C)-(IV). (D)-(I)

  2. B.

    (A)-(I), (B)-(II), (C)-(III), (D)-(IV)

  3. C.

    (A)-(II), (B)-(III), (C)-(I), (D)-(IV)

  4. D.

    (A)-(II), (B)-(I), (C)-(Iii), (D)-(IV)

Attempted by 137 students.

Show answer & explanation

Correct answer: C

Correct matching: Least frequently used → Page replacement policy in cache memory; Critical Section → Program section that must complete before another processor accesses the same shared resource; Loosely coupled multiprocessor system → Memory is distributed among processors; Distributed operating system organization → Operating system routines are distributed among processors.

  • Least frequently used: This is a page replacement strategy (LFU) used in cache/page management that evicts the item referenced least often, so it matches the page replacement policy in cache memory.

  • Critical Section: A critical section is a program segment that must complete execution before another processor or thread can access the same shared resource; this matches the given description of mutual exclusion and ordering.

  • Loosely coupled multiprocessor system: In a loosely coupled (distributed) multiprocessor system, memory is not shared centrally but is distributed among processors, so memory distribution among processors is the correct match.

  • Distributed operating system organization: A distributed operating system distributes OS routines and services across multiple machines or processors, so the match that states OS routines are distributed is appropriate.

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