Q98.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.
What information is used to determine if a resource request can be granted ?
1.Available resources and current allocation of each process✓ Correct
2.CPU utilization of each process
3.Number of processes waiting for resources
4.Arrival time of each process
Solution
The correct answer is Available resources and current allocation of each process.
Key Points
The Banker's Algorithm is used for deadlock avoidance in operating systems by ensuring that resource allocation does not leave the system in an unsafe state.
To determine if a resource request can be granted, the algorithm checks the available resources and the current allocation of each process, along with the maximum demand of each process.
If granting the request keeps the system in a safe state, the resources are allocated to the process; otherwise, the process must wait.
Additional Information
CPU utilization of each process: While CPU utilization is important for scheduling and performance monitoring, it is not directly used in the Banker's Algorithm for resource allocation decisions.
Number of processes waiting for resources: This information can be useful for understanding the system's state but is not directly used in the Banker's Algorithm to decide if a request can be granted.
Arrival time of each process: Arrival time is relevant for scheduling algorithms like First-Come-First-Served (FCFS) but not for the Banker's Algorithm, which focuses on resource allocation and safety.
