Deadlock Management in Operating Systems: Quizzes and Practice Questions

Question 1

Which deadlock detection algorithm uses timestamps to determine the victim process to be terminated?

Accepted Answer

Habermann's Algorithm

Answer

Centralized Detection

Answer

Round-Robin Detection

Answer

Wait-for Graph Method

Question 2

In an operating system, what is a critical section?

Accepted Answer

A section of code that requires exclusive access to shared resources

Answer

A section of code that can be interrupted by external events

Answer

A section of code that is protected against unauthorized access

Answer

A section of code that must be executed in a specific order

Question 3

What is the primary goal of a deadlock avoidance algorithm?

Accepted Answer

To prevent deadlocks from occurring entirely

Answer

To detect and recover from deadlocks

Answer

To minimize the impact of deadlocks

Answer

To optimize the allocation of resources

Question 4

Which deadlock prevention technique involves prohibiting processes from requesting resources already held by other processes?

Accepted Answer

Deadlock prevention by hold and wait

Answer

Deadlock avoidance

Answer

Deadlock prevention by wound-wait

Answer

Resource allocation graph

Question 5

Which algorithm is commonly used for deadlock avoidance by dynamically checking resource requests?

Accepted Answer

Banker's algorithm

Answer

Wound-wait algorithm

Answer

Lamport's timestamping algorithm

Answer

Peterson's algorithm

Question 6

What is the primary goal of deadlock detection mechanisms?

Accepted Answer

Identify existing deadlocks in the system

Answer

Prevent deadlocks from occurring

Answer

Recover from deadlocks once they occur

Answer

Grant additional resources to processes

Question 7

What does 'resource starvation' refer to in the context of deadlocks?

Accepted Answer

When a process indefinitely waits for resources held by deadlocked processes

Answer

When a process is forcefully terminated to resolve a deadlock

Answer

When a process is allocated excessive resources

Answer

When deadlocks occur across multiple systems

Question 8

Which advantage is associated with using a hierarchical approach to resource allocation?

Accepted Answer

Reduces the likelihood of deadlocks

Answer

Improves resource management efficiency

Answer

Increases system performance

Answer

Eliminates the need for deadlock prevention techniques

Question 9

What is the purpose of 'process rollback' as a deadlock recovery technique?

Accepted Answer

Return the system to a previous state prior to the deadlock

Answer

Terminate all processes involved in the deadlock

Answer

Allocate additional resources to deadlocked processes

Answer

Prevent future deadlocks from occurring

Question 10

Which deadlock prevention mechanism ensures that a process cannot request a resource that is already allocated to another process, avoiding possible deadlocks?

Accepted Answer

Resource ordering

Answer

Dynamic resource allocation

Answer

Deadlock avoidance

Answer

Deadlock detection

Question 11

What is the primary objective of deadlock avoidance?

Accepted Answer

To prevent deadlocks from occurring in the system

Answer

To detect and recover from deadlocks when they occur

Answer

To ensure that all processes have equal access to resources

Answer

To minimize the impact of deadlocks on system performance

Question 12

In a typical deadlock recovery procedure, what is the initial step taken to resolve the deadlock?

Accepted Answer

Identifying and terminating the deadlocked processes

Answer

Aborting all running processes in the system

Answer

Restarting the operating system to clear all processes

Answer

Reallocating resources from deadlocked processes to others

Question 13

Which algorithm is commonly used for deadlock avoidance in operating systems?

Accepted Answer

Banker's algorithm

Answer

Wound-wait algorithm

Answer

Chandy-Misra-Haas algorithm

Answer

Lamport's algorithm

Question 14

What is the primary purpose of a deadlock detection algorithm?

Accepted Answer

To detect deadlocks that have already occurred

Answer

To prevent deadlocks from occurring

Answer

To recover from deadlocks

Answer

To avoid deadlocks from occurring

Question 15

Which of the following is NOT a deadlock prevention technique?

Accepted Answer

Hold and wait

Answer

Resource ordering

Answer

Preemption

Answer

Mutual exclusion

Question 16

What is the main goal of the Banker's algorithm?

Accepted Answer

Deadlock avoidance

Answer

Deadlock detection

Answer

Deadlock prevention

Answer

Deadlock recovery

Question 17

What is the primary function of a deadlock recovery algorithm?

Accepted Answer

Terminating processes involved in a deadlock

Answer

Identifying deadlocks that have occurred

Answer

Restarting processes involved in a deadlock

Answer

Preventing deadlocks from occurring

Question 18

Which of the following is NOT a disadvantage of using deadlock avoidance algorithms?

Accepted Answer

Prevention of all possible deadlocks

Answer

Complexity of implementation

Answer

Potential for starvation

Answer

Inefficiency

Question 19

How does deadlock prevention differ from deadlock avoidance?

Accepted Answer

Deadlock prevention prevents deadlocks by not allowing processes to enter a state where a deadlock could occur, while deadlock avoidance prevents deadlocks by not allowing processes to request resources that could lead to a deadlock

Answer

Deadlock prevention ensures that deadlocks will never occur, while deadlock avoidance does not

Answer

Deadlock avoidance ensures that deadlocks will never occur, while deadlock prevention does not

Answer

Deadlock prevention and deadlock avoidance are the same thing

Question 20

Which condition is necessary for a deadlock to occur?

Accepted Answer

**Mutual exclusion**

Answer

Resource starvation

Answer

Priority inheritance

Answer

Circular wait

Question 21

Which deadlock prevention technique involves pre-allocating all required resources to processes?

Accepted Answer

**Resource ordering**

Answer

Wait-die

Answer

Wound-wait

Answer

Timeout

Question 22

Which deadlock avoidance algorithm utilizes a request and grant model to prevent deadlocks?

Accepted Answer

**Banker's algorithm**

Answer

Round-robin

Answer

First-come-first-served

Answer

Shortest-job-first

Question 23

In the wound-wait deadlock detection algorithm, which protocol is utilized?

Accepted Answer

**Timestamp**

Answer

Priority inheritance

Answer

Sequence number

Answer

Hold-and-wait

Question 24

Which strategy involves terminating a process to break a deadlock?

Accepted Answer

**Deadlock recovery**

Answer

Deadlock avoidance

Answer

Deadlock detection

Answer

Deadlock prevention

Question 25

What is the purpose of a resource allocation graph in the context of deadlock management?

Accepted Answer

**To visually represent resource allocation and resource dependencies**

Answer

To prioritize processes for resource allocation

Answer

To calculate the wait time for processes

Question 26

Which of the following is a potential limitation of deadlock prevention?

Accepted Answer

**It may restrict resource utilization**

Answer

It requires knowledge of all resource requests in advance

Answer

It is more complex to implement

Answer

It does not guarantee deadlock-free operation

Question 27

Which deadlock avoidance algorithm operates in a non-preemptive manner?

Accepted Answer

**Wound-wait**

Answer

Shortest-job-first

Answer

Banker's algorithm

Question 28

What is a key disadvantage of employing a timeout mechanism to detect deadlocks?

Accepted Answer

**It can lead to starvation or livelock**

Answer

It is computationally expensive

Answer

It is not guaranteed to detect all deadlocks

Answer

It requires global knowledge of the system