MAHATMA GHANDHI UNIVERSITY (MG)
B.Tech.
DEGREE EXAMINATION, APRIL / MAY 2001
Branch: Computer Science Engineering
Seventh Semester, (New Scheme)
COMPUTER NETWORKS (R)
Time : Three Hours Maximum : 100 Marks
Part
A
Answer
all questions.
1. Discuss the star
network toology. the IS
2. Discuss the
functioning of the Physical Layer thO model
3. Discuss what is
meant by routing table.
4. Discuss datagram
concept a applied to network layer.
5. Discuss the
nature of IP packets and their headers.
7. Explain
connectionless protocol with a typical example.
8. Explain the FTP
service.
9. Discuss the
implementation of access management as applied to the presentation layer.
10. Explain the
sliding window protocol. (10 x 4 =
40 marks)
Part B
Answer all
questions.
All questions carry
equal marks.
11. (a) With a neat
block diagram, explain briefly the ISO Jaye model.
Or
(b) Compare analog transmission and digital
transmission with special reference to ISDN.
12. (a) Discuss the
concept of a data packets and their formats tis used in computer networks.
Or
(b) I xplain the various hardware
components used for computer data communication.
13. (a) Discuss
satellite packet broadcasting in brief
Or
(b) Discuss the IEEE and 802.3 standards
for LAN.
14. (a) Explain the
session layer services and their implementation. Or
(b) Discuss the services implemented in the
transport layer and the nature of the implementation.
15. (a) Discuss the need for data compression
techniques the methods used for it as applied to computer communication.
Or
(b) Explain
the nil poitant services offered by the presentation layer. (5 x 12 = 60 marks)
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