BCA Semester 4 – Operating System – Unit 4: Deadlocks (4Hrs.)

Question 1

A system has two process and three resources. Each process needs a maximum of two resources. Is deadlock possible? Explain with answer.

Marks: 5

Year: 2020 Final TU FOHSS

Is Deadlock Possible? No, deadlock is NOT possible in this system. --- Explanation Given: - Number of processes = 2 - Number of resources = 3 - Each process needs a maximum of 2 resources to

Question 2

Define deadlock. List out the conditions that can result in resource deadlock. Explain different deadlock handling methods in detail.

Marks: 10

Year: 2021 Final TU FOHSS

1. Deadlock Definition A deadlock is a situation in an operating system where a set of processes are permanently blocked because each process is holding at least one resource and waiting for another

Question 3

What do you mean by Preemptable and Non-Preemptable resources? Describe the necessary conditions for deadlock.

Marks: 5

Year: 2023 Final TU FOHSS

1. Preemptable and Non-Preemptable Resources Preemptable Resources Preemptable resources are those resources that can be taken away from a process without causing failure and reassigned to another pr

Question 4

How deadlock can be prevented? Explain in detail.

Marks: 5

Year: 2024 Final TU FOHSS

What is Deadlock? A deadlock is a situation in which two or more processes are permanently blocked, each waiting for a resource held by another process. Deadlock occurs when the following four necessa