BCA Semester 6 – Distributed System () Questions & Answers | Past TU Exam Papers

Question 1

How is process resilience achieved through groups?

Marks: 5

Year: 2021 Final TU FOHSS

Definition Process resilience in distributed systems refers to the ability of processes to continue functioning correctly despite failures. Groups are collections of processes that work together to

Question 2

Write short notes on (Any Two): a) Bully Algorithm b) Berkeley Socket c) Denial of Service

Marks: 5

Year: 2021 Final TU FOHSS

a) Bully Algorithm - Definition: A distributed algorithm used to elect a coordinator (leader) among processes in a distributed system. - Key Points: - The process with the highest ID becomes the

Question 3

What is the role of a coordinator in a distributed system? Explain different approaches of electing a coordinator.

Marks: 10

Year: 2021 Final TU FOHSS

Role of a Coordinator - A coordinator is a special process in a distributed system responsible for managing and coordinating tasks among processes. - Key Roles: 1. Process Coordination: Ensures

Question 4

What is middleware? Explain the different architecture styles of distributed systems.

Marks: 5

Year: 2023 Final TU FOHSS

Middleware Definition Middleware is software that connects distributed applications and components, hiding the complexity of the underlying network and hardware. - Facilitates communication, intero

Question 5

Define distributed commit. Explain two-phase commit with a suitable diagram.

Marks: 5

Year: 2023 Final TU FOHSS

Distributed Commit Definition A distributed commit is a protocol that ensures all participants in a distributed transaction either commit or abort the transaction consistently. - Prevents inconsist

Question 6

What is an election algorithm? Explain the different election algorithms with a suitable diagram.

Marks: 10

Year: 2023 Final TU FOHSS

Definition An Election Algorithm is a protocol used in distributed systems to select a coordinator (leader) among processes. - Ensures that exactly one process acts as the coordinator at any time.

Question 7

What are the types of failures that may occur in a distributed system? Explain the methods used to recover from the crash? Explain the one-phase commit and two-phase commit protocol in detail.

Marks: 10

Year: 2024 Final TU FOHSS

1. Types of Failures in Distributed Systems | Type | Description | Example | |------|------------|---------| | 1. Crash Failure | A process stops working and does not recover. | Node in a cluster cras