[Solved] Which of the following statements about linked file allocation contains a subtle misconception? - Ans: Linked allocation allows efficient random access to any block in the file. | Operating Systems

Operating Systems - File Allocation Methods - Contiguous, Linked, Indexed

Which of the following statements about linked file allocation contains a subtle misconception?

ALinked allocation eliminates external fragmentation by storing file blocks anywhere on disk.

BEach file block contains a pointer to the next block, enabling sequential access.

CLinked allocation requires only one pointer per block, reducing overhead compared to indexed allocation.

DLinked allocation allows efficient random access to any block in the file.

Step-by-Step Solution

Solution:

Step 1: Review linked allocation properties
Linked allocation stores blocks scattered, eliminating external fragmentation.
Step 2: Analyze random access capability
Random access is inefficient because blocks must be accessed sequentially via pointers.
Step 3: Confirm pointer overhead
Each block has one pointer, less overhead than indexed allocation's index blocks.
Step 4: Identify misconception
Statement C incorrectly claims efficient random access, which is false.
Final Answer:
Option D -> Option D
Quick Check:
Linked allocation random access requires pointer traversal -> inefficient [OK]

Quick Trick: Linked allocation random access is slow, not efficient [OK]

Common Mistakes:

MISTAKES

Trap Explanation:

PITFALL

Candidates often overestimate linked allocation's random access due to pointer simplicity.

Interviewer Note:

CONTEXT

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Which of the following statements about linked file allocation contains a subtle misconception?