Which of the following is a common misconception about SSTF that leads to incorrect assumptions about starvation?

medium🐞 Bug Identification Q7 of Q15

Operating Systems - Disk Scheduling - SSTF, SCAN, C-SCAN

ASSTF guarantees fairness by servicing all requests equally over time

BSSTF can cause starvation because requests far from the current head may be indefinitely delayed

CSSTF prevents starvation by moving the head in one direction like SCAN

DSSTF always services requests in the order they arrive, so starvation cannot occur

Step-by-Step Solution

Solution:

Step 1: Understand SSTF behavior
SSTF selects the closest request next, ignoring arrival order.
Step 2: Analyze starvation potential
Requests far from current head can be delayed indefinitely if closer requests keep arriving.
Step 3: Identify misconception
Assuming SSTF services requests in arrival order is false and leads to misunderstanding starvation.
Final Answer:
Option D -> Option D
Quick Check:
SSTF ignores arrival order -> starvation possible [OK]

Quick Trick: SSTF ignores arrival order, causing starvation [OK]

Common Mistakes:

MISTAKES

Trap Explanation:

PITFALL

Interviewer Note:

CONTEXT

Master "Disk Scheduling - SSTF, SCAN, C-SCAN" in Operating Systems

2 interactive learning modes - each teaches the same concept differently

Want More Practice?

15+ quiz questions · All difficulty levels · Free

More Operating Systems Quizzes