Operating Systems - Banker's Algorithm - Safe State & Resource Allocation
When a process requests additional resources, which pattern best describes the Banker's Algorithm's approach to deciding whether to grant the request?
When a process requests additional resources, which pattern best describes the Banker's Algorithm's approach to deciding whether to grant the request?
easy🔍 Pattern Recognition Q2 of Q15
Step-by-Step Solution
Solution:
Step 1: Recall Banker's Algorithm resource request handling
The algorithm simulates granting the request and checks if the resulting state is safe before actual allocation.Step 2: Evaluate options
Simulate allocation and check if the system remains in a safe state before granting the request correctly describes this simulation step. Grant the request immediately if resources are available, then check for deadlock after allocation grants first then checks, risking unsafe states. Queue the request until all other processes finish to avoid any risk of deadlock is overly conservative and not how Banker's Algorithm works. Grant the request only if it does not exceed the current available resources, ignoring future states ignores the safe state check, which is critical.Final Answer:
Option B -> Option BQuick Check:
Simulation before allocation ensures safety [OK]
Quick Trick: Banker's Algorithm simulates before granting resources [OK]
Common Mistakes:
MISTAKES- Granting resources before safety check
- Ignoring safe state simulation
- Assuming requests are queued indefinitely
Trap Explanation:
PITFALL- Many candidates think resources are allocated first and deadlock checked later, missing the simulation step.
Interviewer Note:
CONTEXT- Checks understanding of Banker's Algorithm's core safety check mechanism.
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