Operating System Multiple Choice Questions on “Robustness of Distributed Systems”.
1. How many layers does the Internet model ISO consist of?
a) Three
b) Five
c) Seven
d) Eight
Answer: c
2. Which layer is responsible for The process-to-process delivery?
a) Network
b) Transport
c) Application
d) Physical
Answer: b
Clarification: None.
3. Which layer is the layer closest to the transmission medium?
a) Physical
b) Data link
c) Network
d) Transport
Answer: a
Clarification: None.
4. Header are ______ when data packet moves from upper to the lower layers?
a) Modified
b) Removed
c) Added
d) All of the mentioned
Answer: c
Clarification: None.
5. Which layer lies between the transport layer and data link layer?
a) Physical
b) Network
c) Application
d) Session
Answer: b
Clarification: None.
6. Which of the following is an application layer service?
a) Mail service
b) File transfer
c) Remote access
d) All of the mentioned
Answer: d
Clarification: None.
7. What are the different ways distributed may suffer?
a) Failure of a link
b) Failure of a site
c) Loss of message
d) All of the mentioned
Answer: d
Clarification: None.
8. What are design issues in distributed system structure?
a) Scalability
b) Fault-tolerance
c) Clustering
d) All of the mentioned
Answer: d
Clarification: None.
9. In which OSI layer encryption and decryption happens?
a) Application
b) Presentation
c) Transport
d) Data Link
Answer: b
Clarification: None.
10. What are the important steps followed when recovery from failure happens?
a) Post repairing integration with main system should happen smoothly and gracefully
b) Upon link failure both parties at end must not be notified
c) Fault recovery system must me adjusted
d) Failures are logged systematically
Answer: a