CUET PG 2026 — operating system os PYQ

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Question

CUET PG 2026 — operating system os PYQ

CUET PG | operating system os | 2026

Assertion (A): Paging suffers from internal fragmentation within the last page of a process if the process size is not an exact multiple of the page size.

Reason (R): Physical memory is divided into fixed-size blocks called frames, and logical memory is divided into blocks of the same size called pages, leading to residual space allocation.

Choose the correct answer:

Explanation

Assertion (A) is True: Paging allocates memory in fixed-size blocks (pages and frames). If a process size does not cleanly fit into an exact multiple of the page size, the leftover space in the final allocated page goes unused, causing internal fragmentation.
Reason (R) is True: Because logical and physical memories are partitioned into equal fixed blocks (pages and frames), allocating memory in these discrete units inherently leaves residual space (internal fragmentation) when a process doesn't fully occupy its last assigned page. Furthermore, Reason (R) directly explains why assertion (A) happens.