Leader election algorithms MCQs – Parallel and Distributed Computing

1.What is the primary goal of leader election algorithms in distributed systems?

a. Achieving efficient load balancing
b. Detecting and recovering from deadlocks
c. Electing a single process as a leader
d. Minimizing fault tolerance

Answer: c

2.In a leader election algorithm, what does the term “leader” represent?

a. The process with the highest fault tolerance
b. The process responsible for deadlock detection
c. The elected coordinator or head of the group
d. The process with the most hardware diversity

Answer: c

3.Which algorithm is commonly used for leader election in a ring topology?

a. Bully Algorithm
b. Ring-Coordinator Algorithm
c. Tree-Based Algorithm
d. Randomized Algorithm

Answer: a

4.What is the primary focus of the Bully Algorithm?

a. Minimizing fault tolerance
b. Efficient load balancing
c. Electing the process with the highest priority as the leader
d. Detecting and recovering from deadlocks

Answer: c

5.In a leader election algorithm, what is the purpose of the “priority” assigned to each process?

a. Indicating the order of process execution
b. Identifying the process with the most hardware diversity
c. Determining the process responsible for deadlock detection
d. Aiding in the selection of the leader

Answer: d

6.Which leader election algorithm is based on the concept of a “ring”?

a. Bully Algorithm
b. Ring-Coordinator Algorithm
c. Tree-Based Algorithm
d. Randomized Algorithm

Answer: a

7.What is the primary advantage of the Ring-Coordinator Algorithm?

a. Simplicity and ease of implementation
b. Efficient load balancing
c. Minimizing fault tolerance
d. Detecting and recovering from deadlocks

Answer: a

8.In a leader election algorithm, what is the significance of the “coordinator” process?

a. The process with the highest fault tolerance
b. The process responsible for deadlock detection
c. The elected leader or head of the group
d. The process with the most hardware diversity

Answer: c

9.Which leader election algorithm is based on the idea of a rooted tree structure?

a. Bully Algorithm
b. Ring-Coordinator Algorithm
c. Tree-Based Algorithm
d. Randomized Algorithm

Answer: c

10.What is the primary disadvantage of the Ring-Coordinator Algorithm?

a. Simplicity and ease of implementation
b. Inefficient load balancing
c. High communication overhead
d. Minimizing fault tolerance

Answer: c

11.In a leader election algorithm, what is the role of the “initiator” process?

a. The process with the highest fault tolerance
b. The process responsible for deadlock detection
c. The process initiating the leader election process
d. The process with the most hardware diversity

Answer: c

12.Which leader election algorithm is known for its random selection of the leader?

a. Bully Algorithm
b. Ring-Coordinator Algorithm
c. Tree-Based Algorithm
d. Randomized Algorithm

Answer: d

13.What is the primary challenge addressed by leader election algorithms in distributed systems?

a. Achieving efficient load balancing
b. Detecting and recovering from deadlocks
c. Electing a single process as a leader
d. Maximizing fault tolerance

Answer: c

14.In a leader election algorithm, what is the role of the “parent” and “children” processes in a tree structure?

a. Identifying the process with the most hardware diversity
b. Establishing communication links between processes
c. Aiding in the selection of the leader
d. Managing the hierarchy of processes

Answer: d

15.Which leader election algorithm is known for its simplicity and suitability for small-scale systems?

a. Bully Algorithm
b. Ring-Coordinator Algorithm
c. Tree-Based Algorithm
d. Randomized Algorithm

Answer: a

16.What is the primary focus of the Tree-Based Algorithm?

a. Efficient load balancing
b. Minimizing fault tolerance
c. Electing the process with the highest priority as the leader
d. Establishing a hierarchical structure for leader election

Answer: d

17.In a leader election algorithm, what is the significance of the “root” process in a tree structure?

a. The process with the highest fault tolerance
b. The process responsible for deadlock detection
c. The elected leader or head of the group
d. The process initiating the leader election process

Answer: a

18.Which leader election algorithm is based on the concept of a “token”?

a. Bully Algorithm
b. Ring-Coordinator Algorithm
c. Token-Ring Algorithm
d. Randomized Algorithm

Answer: c

19.What is the primary advantage of the Token-Ring Algorithm?

a. Simplicity and ease of implementation
b. Inefficient load balancing
c. Minimizing fault tolerance
d. Detecting and recovering from deadlocks

Answer: a

20.In a leader election algorithm, what is the purpose of the “token” in the Token-Ring Algorithm?

a. The process with the highest fault tolerance
b. The process responsible for deadlock detection
c. The elected leader or head of the group
d. The special message passed between processes to establish leadership

Answer: d

21.Which leader election algorithm is known for its ability to handle dynamic changes in the system?

a. Bully Algorithm
b. Ring-Coordinator Algorithm
c. Tree-Based Algorithm
d. Dynamic-Leader Algorithm

Answer: d

22.What is the primary disadvantage of the Dynamic-Leader Algorithm?

a. Simplicity and ease of implementation
b. Inefficient load balancing
c. High communication overhead
d. Minimizing fault tolerance

Answer: c

23.In a leader election algorithm, what is the role of the “neighbor” processes in dynamic leader election?

a. Identifying the process with the most hardware diversity
b. Establishing communication links between processes
c. Aiding in the selection of the leader
d. Managing the hierarchy of processes

Answer: b

24.Which leader election algorithm is based on the concept of a “token ring” and “randomized delays”?

a. Bully Algorithm
b. Ring-Coordinator Algorithm
c. Token-Ring Algorithm
d. Randomized Algorithm

Answer: d

25.What is the primary focus of the Randomized Algorithm for leader election?

a. Achieving efficient load balancing
b. Minimizing fault tolerance
c. Electing the process with the highest priority as the leader
d. Introducing randomness to handle contention and avoid conflicts

Answer: d

26.In a leader election algorithm, what is the role of the “coordinator” process in dynamic leader election?

a. The process with the highest fault tolerance
b. The process responsible for deadlock detection
c. The elected leader or head of the group
d. The process initiating the leader election process

Answer: c

27.Which leader election algorithm is known for its ability to handle network partitions?

a. Bully Algorithm
b. Ring-Coordinator Algorithm
c. Tree-Based Algorithm
d. Split-Brain Algorithm

Answer: d

28.What is the primary disadvantage of the Split-Brain Algorithm?

a. Simplicity and ease of implementation
b. Inefficient load balancing
c. High communication overhead
d. Minimizing fault tolerance

Answer: c

29.In a leader election algorithm, what is the role of the “quorum” in the Split-Brain Algorithm?

a. Identifying the process with the most hardware diversity
b. Establishing communication links between processes
c. Aiding in the selection of the leader
d. Ensuring a sufficient number of processes agree on the leader

Answer: d

30.Which leader election algorithm is designed to handle the challenge of simultaneous election attempts?

a. Bully Algorithm
b. Ring-Coordinator Algorithm
c. Tie-Breaker Algorithm
d. Randomized Algorithm

Answer: c

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