Q100.Marks: +2.0UGC NET Paper 2: Computer Sc 23rd August 2024 Shift 1
📄 Passage
Read the below passage and answer the questions.
The Banker's Algorithm is a critical deadlock avoidance method in operating systems, designed to facilitate resource allocation without causing deadlock. It operates by maintaining information about the maximum resources. Each process may require, the current allocated resources and the available resources in the system. The algorithm checks each resource request to determine, if granting it would leave the system in a safe state, meaning that there is always a sequence in which all processes can complete their execution without getting stuck due to resource unavailability. Each process must specify its maximum demand for each resource type before it starts execution. When a process requests additional resources, the algorithm checks if granting the request will keep the system in a safe state. If so, the resources are allocated otherwise the process must wait until its request can be safely fulfilled.
Which of the following is NOT a requirement for Banker's algorithm to grant a resource request?
1.The requested resources must be available.
2.The system must be in a safe state after granting the request.
3.The request must not exceed the maximum resources the process can request.
4.The process must be the only one requesting resources.✓ Correct
Solution
The correct answer is The process must be the only one requesting resources..
Key Points
The Banker's Algorithm is a deadlock avoidance strategy used in operating systems to ensure that resource allocation does not lead to a deadlock situation.
For the algorithm to grant a resource request, it must ensure that the requested resources are available.
The system must remain in a safe state after granting the request, meaning there should be a sequence in which all processes can complete without resource deadlocks.
The request should not exceed the maximum resources that the process has declared it may need.
It is not necessary that the process must be the only one requesting resources. This is not a requirement for the Banker's Algorithm to function correctly.
Additional Information
Option 1: The requested resources must be available. This is crucial for the Banker's Algorithm to proceed with the request. If the resources are not available, the process must wait.
Option 2: The system must be in a safe state after granting the request. This ensures that there is a sequence of processes that can complete without causing a deadlock.
Option 3: The request must not exceed the maximum resources the process can request. This ensures that a process does not ask for more resources than it initially declared it might need.
Option 4: The process must be the only one requesting resources. This is not a requirement. Multiple processes can request resources simultaneously, and the Banker's Algorithm will check each request independently to ensure system safety.
