[Solved] Trace the sequence of checks the Banker's Algorithm performs when a process requests... Which step occurs immediately after verifying the request does not exceed the process's declared maximum need? | Operating Systems

Operating Systems - Banker's Algorithm - Safe State & Resource Allocation

Trace the sequence of checks the Banker's Algorithm performs when a process requests additional resources. Which step occurs immediately after verifying the request does not exceed the process's declared maximum need?

AThe algorithm preempts resources from other processes to fulfill the request.

BThe algorithm immediately grants the request without further checks.

CThe algorithm simulates allocation and checks if the system remains in a safe state.

DThe algorithm checks if the requested resources are currently available in the system.

Step-by-Step Solution

Step 1: Recall the Banker's Algorithm request sequence
First, it checks if the request is within the process's maximum declared need.
Step 2: Next step after need check
The algorithm then verifies if the requested resources are available in the system's current available pool.
Step 3: Subsequent steps
If available, it simulates allocation and checks for safe state, but this occurs after availability check.
Final Answer:
Option D -> Option D
Quick Check:
Availability check precedes simulation to avoid unnecessary computation.

Quick Trick: Request ≤ Need -> check availability -> simulate safe state [OK]

Common Mistakes:

MISTAKES

Assuming simulation happens before availability check
Believing requests are granted immediately after need check
Thinking preemption is part of Banker's Algorithm

Trap Explanation:

PITFALL

Option C is tempting because simulation is key, but it only happens after confirming availability. Option B ignores safety checks. Option D confuses Banker's Algorithm with preemptive resource management.

Interviewer Note:

CONTEXT

Tests detailed understanding of the Banker's Algorithm request handling sequence.

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More Operating Systems Quizzes

Which step occurs immediately after verifying the request does not exceed the process's declared maximum need?

Step 1: Recall the Banker's Algorithm request sequence

Step 2: Next step after need check

Step 3: Subsequent steps

Final Answer:

Quick Check:

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