NOTE: There are 11 Questions in all.
Question
1 is compulsory and carries 16 marks. Answer to Q. 1. must be written in the
space provided for it in the answer book supplied and nowhere else.
Answer
any THREE Questions each from Part I and Part II. Each of these questions
carries 14 marks.
Any
required data not explicitly given, may be suitably assumed and stated.
Q.1 Choose
the correct or best alternative in the following: (2x8)
a.
In
cyclic redundancy checking CRC is the
(A) divisor. (B)
quotient.
(C) dividend. (D) remainder.
b.
Which
one of the following uses the greatest number of layers in the OSI model?
(A)
Bridge. (B) Repeater.
(C) Router. (D) Gateway.
c. Which of the following 802 standard provides
for a collision free protocol?
(A) 802.2 (B) 802.3
(C) 802.5 (D) 802.6
d. The
addressing especially used by Transport Layer is
(A) Station address (B)
Network address
(C) Application port address (D) Dialog address
e. Which
one of the following is an error reporting protocol?
(A)
ARP (B) ICMP
(C) TCP (D) UDP
f. Which
type of web document is run at the client site
(A) Static (B) Dynamic
(C) Active (D) All of the above
g. The
main function of a browser is to
(A) compile HTML (B)
interpret HTML
(C) de-compile HTML (D)
interpret CGI programs
h. Which
of the following is associated with SNMP
(A) SMI (B) BER
(C) DNS (D) MIB
Answer
any THREE Questions. Each question carries 14 marks.
Q.2 a. Give the format of Ethernet frame and explain
the semantics of each field. (6)
b. Why is packet
switching important? Give at least two
reasons. (4)
c. Differentiate
between the Transport and Session layers of OSI model. (4)
Q.3 a. Describe the various characteristics of UDP
protocol. (6)
b. Why is
fragmentation needed on Internet not on a typical WAN? (4)
c. How does TCP
take of wrapping over of sequence numbers? (4)
Q.4 a. Write notes on Frame Filtering Techniques. (5)
b. What functions connect() and accept() call in
Socket interfacing? (5)
c. Can SMTP be used as transfer protocol for Web
pages? Why? (4)
Q.5 a. Describe
the Electronic Data Exchange (EDI) architecture in brief. (5)
b. How do active web pages work? Describe with a small example. (5)
c. Discuss the life cycle of
JSP. (4)
Q.6 a. Describe the WAP stack in brief. (5)
b. Discuss the main tags of
WML. (5)
c. Differentiate between WML-Script and Web-based scripting languages. (4)
Answer
any THREE Questions. Each question carries 14 marks.
Q.7 a. Two computers using TDM take up turns to send
1000-bytes packet over a shared channel that operates at 64000 bits per
second. The hardware takes 100
microseconds after one computer stops sending before the other can begin. How long will it take for each computer to
send one megabyte data file? (5)
b. Compute the number of Ethernet frames formed
for a data of 64 KB IP packet. (5)
c. Why does Ethernet specify a minimum frame
size. (4)
Q.8 a. A router connects to at most K networks. How
many routers R are required to connect to N networks? Derive an equation that gives R in terms of N and K. (5)
b. How many responses does a computer expect to
receive when it broadcast an ARP request?
Why? (4)
c. Explain the technique used in the asymmetric
Key Cryptography. (5)
Q.9 a. Give the format of ICMP header and explain
meaning of each field. (4)
b. How does
TCP/IP decide the size of an IP fragment?
Explain. (4)
c. Could you directly use TCP over Ethernet
without using IP? Justify. (3)
d. What is the largest UDP message that can fit
into single Ethernet frame? (3)
Q.10 a. Give
the sequence of procedure calls for both server and client for
connection-oriented application. (4)
b. Can both
client and server use the same protocol port on the same computer at the same
time? Explain. (4)
c. Does it make
sense for two domain name servers to contain exactly the same set of
names? Why? (3)
c. Why is XML superior to other forms of data
exchange? (3)
d. What are the limitations of mobile devices? (3)