Osmania University (OU) 2007 B.E Computer Science and Engineering Computer networks - exam paper
FACULTY OF ENGINEERING
B. E. 3/4 (CSE) Ii Semester (Main) Examination, April! May 2007 Subject: Computer Networks Time: 3 Hours] * * [Max. Marks: 75
Part - A (25 Marks)
Note : Answer all questions of Part-A and answer any five questions from Part-B.
1. |
Define : Broadcasting, Multicasting, Unicasting. |
(3) |
2. |
What are choke packets ? |
(2) |
3. |
What is initial connection protocol used for ? |
(2) |
4. |
List out the applications of Real Time Transport Protocol. |
(3) |
5. |
Differentiate between blocking and Non-blocking I / O. |
(2) |
6. |
What are the different socket options ? |
(3) |
7. |
What is the difference between caching and mirroring ? |
(2) |
8. |
Can a machine with a single DNS name have multiple IP addresses ? | |
If so, How could this occur ? |
(3) | |
9. |
What is denial of service attack ? |
(2) |
10. |
What is PGP ? Give two reasons why PGP compresses messages. (3) |
Part - B (50 Marks)
11. (a) How are Routing algorithms classified ? Explain the shortest path routing
by means of an example. (5)
(b) With a neat sketch, explain the different fields of IP Header. (5)
12. (a) What are the different Timers employed in TCP ? Discuss. (5+5) (b) Explain the TCP transmission policy.
13. (a) What is Out-of-band data ? Explain. (5+5) (b) Write a note on XTI streams.
14.(a) Differentiate between static and dynamic web documents. (6+4) (b) Suppose that you want to send an MP3 file to a friend, but your friends
ISP limits the amount of incoming mail to 1MB and the MP3 file is 4MB. Is there a way to handle this situation.
15.(a) Explain the Advanced Encryption Standard. (5+5) (b) Explain the authentication using Kerberos.
16.(a) Explain,the SMTP. (5+5)
(b) Distinguish between Digital and Streaming audio.
17. Write short notes on ftiiy two of the following : (5+5)
(a) Tunneling
(b) IPV6
(c) Digital signatures
Attachment: |
Earning: Approval pending. |