B.C.A. (Semester III) (CGPA) Examination Mar/Apr-2018
NETWORKING AND DATA COMMUNICATION
Time: 2½ Hours
Max. Marks: 70
Instructions: Q.1 and Q.7 are compulsory. Attempt any two questions from Q.2, Q.3 and Q.4. Attempt any one question from Q.5 and Q.6.
Q.1

Select correct alternatives:
10
The communication medium that supports data in both directions one at a time as
simplex
multiplex
half duplex
full duplex
If a code has odd parity, the number of zero's in each valid code word is
odd
even
both a and b
cannot be said
Framing is a job of layer.
physical
network
data link
session
IP addresses are of
8 bits
16 bits
32 bits
64 bits
Which of the following cable type supports the highest bandwidth?
Co-axial
fiber-optic
STP
UTP
formula is used to calculate data rate for noiseless channel.
Shannon's
Nyquist
Newton
none
UDP is
connectionless
message oriented
connection oriented
both a and b
Which of the following TCP/IP protocol is used for transferring electronic mails?
FTP
SMTP
SNMP
IP
In carrier signal is modulated to follow the changing voltage level of modulating signal.
AM
FM
PM
GM
10) detects any errors which may occur during transmission.
CRC
DLC
HDLC
DCE
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SLR-CV-2
Q.1

State True or False:-
04
IP address is also called as network address.
Communications between two computers are always serial.
Multiple protocols are grouped together to form a protocol suite.
The information that has discrete states is called analog data.
Q.2
Write the Answer of the following question. (Any Two)
14
What is data communication system? Give the components and characteristics of communication system.
Compare between virtual circuit subnet and datagram subnet.
Explain Cyclic Redundancy Check with example.
Q.3
Write the Answer of the following questions:- (Any Two)
14
Differentiate between LAN and WAN.
Explain network topology? Explain in various types.
Explain the concept of amplitude modulation and frequency modulation in detail.
Q.4
Write the Answer of the following questions:- (Any Two)
14
Explain multiplexing with its various types.
Explain concept of OSI model in detail.
What do you mean by computer network? Explain different advantages of it.
Q.5
Explain guided media in detail.
07
Explain different multiple access protocols?
07
Q.6
Explain distance vector routing algorithm.
07
Explain open loop congestion control policy?
07
Q.7
Write short notes on: (Any Two)
14
Types of errors
Compression
UDP
Design issue of layers