UNIT TEST - V
10.50 am - 12.30 pm
Date of Exam: 09.10.2023 Time of Exam:
CSE&
Branch: Year & Semester : III & V Max. Marks: 50 Marks
AI&
DS
Subject Code: CS3551 Subject Name: Distributed Computing
PART- A
Answer All Questions 10*2=20 Marks
1. Define a checkpoint.
2. Mention the types of rollback recovery.
3. Contrast co- ordinate and communication include check pointing.
4. Define consistent system state.
5. What is recovery line?
6. Explain domino effect.
7. List the disadvantages of uncoordinated check pointing.
8. What are the steps needed for rollback dependency graph?
9. List the advantages of co- ordinated check pointing.
10. What is Byzantine agreement?
PART- B
Answer All Questions 2*15=30 Marks
11. a) Explain about a local checkpoint, types of messages and the issues in failure recovery. (15)
(OR)
b) Analyze in brief about uncoordinated, coordinated checkpointing. (15)
12. a) Summerize about Asynchronous check pointing and recovery. (15)
(OR)
b) Explain the steps for Byzantine synchronous message passing. (15)
Prepared by Verified by Authorized by
Sign
Name Mrs.P.Maheshwari Mr.S.Prabakaran Dr.M.Vijayakumar
AP/CSE HOD/CSE Principal
