PART-B (16 MARKS)
UNIT I
1. Explain the OSI-ISO model I of computer with neat
diagram. (16)
2. Distinguish between Point to Point links and
multi-point links with relevant diagram. (16)
3. (i) compare connection oriented and connection less
service. (8)
(ii)What are the
major component of an optical communication system discuss. (8)
4. Write shot notes on
a. Network
Hierarchy (4)
b. Ethernet
(4)
c. Token
ring (4)
d. Ring
topology (4)
5. Perform a comparative study between the ISO-OSI model
and TCP/IP reference
model. (16)
- Write notes on Issues in the data link layer (8)
- Write notes on Hybrid multiple access techniques (10)
UNIT II
1. Write short notes on.
a. GO Back NARQ (8)
b. Selective Repeat ARQ (8)
2. (i) Explain Hamming code technique to correct single
bit error with an example. (8)
(ii) Explain
numbering of frames in GO Back NARQ, Selective Repeat ARQ protocols. (8)
3. (i) Explain MAC Ethernet protocol. (8)
(ii) Explain MAC
sub layer protocol and frame structure of 802.16. (8)
4. Explain the following Inter connection devices also
discuss their uses
a. Repeater (4)
b. Bridge (4)
c. Switch (4)
d. Gateway (4)
5. (i) Consider a 32- bit Block of data 11100111 11011101
00111001 10101001 that has been to be transmitted If longitudinal Redundancy
check is used what is the transmitted bit stream? (8)
(ii) In the
Hamming code for a data unit of ‘m’ bits how do you know compute the number of
redundant bits “r’ needed? (8)
6. (i) Explain any one of the protocols used for flow
control in noisy channels. (8)
(ii) Write short note on
a. sliding windows (4)
b. X-MODEM (4)
7.Explain
about SONET (NOV/DEC 2007)
UNIT III
1. Find the class of each IP address given suitable
explanation. (16)
a. 227.12.14.87
b. 193.14.56.22
c. 14.23.120.8
d. 252.5.15.111
e. 134.11.78.56
f. 000 000 00 1111 0000 11111111 00110011
g. 10000000 1111 0000 11111111 00110011
2. Discuss how DES Algorithm works. (16)
3. State the major difference between Vector Routing and
link state routing. (16)
4. Discuss how these routing and link state routing
techniques work. (16)
5. What is the subnet work address if the destination
address is 200.45.34.56 and the subnet mask is 255.255.240.0. (16)
6. What are the limitations of distance vector routing.
How are they addressed in link state routing? (16)
7. Explain routing of mobile hosting. (16)
8. Write
notes on BGP and CIDR (10)
UNIT IV
1. i. Discuss how multiplexing and demultiplexing is done
in the transport layer. (8)
ii. Explain in
detail the mechanism in transport layer for controlling congestion. (8)
2. i) Explain choke packets methods of congestion control.
(8)
ii) Explain
classless inter domain running(CINR). (8)
3. i) Explain various problem and corresponding solution
in establishing a connection at transport layer. (8)
ii) Explain the
connection release process applied at transport layer. (4)
iii) Explain
window management in TCP. (4)
4. i) Discuss about quality of services. (8) (MAY/JUNE 2009)
ii) Write
short notes on integrated services. (8)
5.Explain the
working of TCP using the state diagram(12)(MAY/JUNE 2009)
6.Discuss the
operation of IntServ for providing QoS.(12)(MAY/JUNE 2009)
UNIT V
1.i) Explain in detail the title transfer protocol. (8)
ii) Describe the
architecture of ISDN. (8)
2. i) Explain in detail a protocol for electronic mail. (8)
ii) Explain in
detail any one ISDN protocol. (8)
3. i) what is HTTP protocol used for? (6)
ii) What is the
default port number of HTTP protocol? (5)
iii) Discuss the
features of HTTP and also discuss how HTTP works. (5)
4. Explain the importance of firewalls. (16)
5. Explain in detail the following
i) Fault
management. (8)
ii)
Security management. (8)
6. Write
notes on Security protocols PGP & SSH (12)
7. Write
notes on IMAP, POP3 (8)
8. Discuss
the various commands used in FTP (12) (MAY/JUNE 2009)
9. Explain
the salient features of the SMTP protocol (12) (MAY/JUNE 2009)
ALSO READ ..!
UNIT I NOTES
UNIT II NOTES
UNIT III NOTES
UNIT IV NOTES
UNIT V NOTES
CS 2302 CN - 16 MARKS
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