Cognizant Placement Paper

Technical Interview Questions
1. Which is the best page replacement algorithm and why?

2. What is software life cycle?

3. How much time is spent usually in each phases and why?

4. What is testing?

5. Which are the different types of testing?

6. Which are the different phases in Software life cycle?

7. Why is analysis and testing phases very important?

8. Why networks are layered? What is the advantage of that?

9. How many layers are there in OSI? Why is it called OSI model?

10. Which are the different network topologies?

11. Give an example of bus type network.

12. What is the Bandwidth of Ethernet?

13. Explain the advantage and disadvantage of Ethernet?

14. Which is the protocol used in Ethernet. (CSMA/CD) Why is it called so?

15. What is the advantage of Ring network?

16. Compare it with Ethernet.

17. What is inheritance, encapsulation etc.

18. If there are too many page faults what is the problem?

19. Which one you will use to implement critical section? Binary Semaphore

20. Which one is not done by Data link layer? bit stuffing, LRC, CRC ,parity check

21. Which one is not suitable for client-server application? TCP/IP, message passing, RPC, none of the above.