B.C.A. (Semester III) (CBCS) Examination Nov/Dec-2018
NETWORKING DATA COMMUNICATION
Time: 2½ Hours Max. Marks: 70
Instructions: All Questions are compulsory.
Figures to the right indicate full marks.
Q.1 Choose the correct alternatives: 14
In communication we transfer a word or a byte at a time.
Serial parallel
Both None of these
A is a device that forwards packets between networks by
processing the routing information included in the packet.
Bridge Firewall
Router All of the mentioned
Multiplexing divides the physical line or a medium into logical segments
called
Channels Signals
Duplex None of these
Network congestion occurs
In case of traffic overloading
When a system terminates
When connection between two nodes terminates
None of these
The layer is the topmost layer in the OSI model.
Physical transport
Application Session
The first Network
CNNET NSFNET
ASAPNET ARPANET
Encryption is handled by the layer.
Data link transport
session presentation
A set of rules that governs data communication
Protocols Standards
RFCs None of these
OSI stands for
Open system interconnection Operating system interface
Optical service implementation None of the mentioned
10) Start and stop bits are used in serial communication for
Error detection Error correction
Synchronization None of these
11) Which topology requires a central controller or hub?
bus star
mesh ring
Page 2 of 2
SLR-SH-12
12) Which layer is responsible for process to process delivery?
Network layer Transport layer
Session layer Data link layer
13) Which one of the following is the multiple access protocol for channel access
control?
CSMA/CD CSMA/CA
Both and None of the mentioned
14) OSI model layers
8 9
5 7
Q.2 Answer the following. (Any four) 08
What is bit rate?
What is long form of RARP?
What is routing?
Define term:
Frequency
ii) Phase
What is framing?
Write notes any Two: 06
Hamming distance
ARP
Explain the concept of ALOHA.
Q.3 Answer the following. (Any two) 08
Explain distance vector routing algorithm.
Explain the terms:
Synchronous transmission
ii) Asynchronous transmission
What is switching? Explain circuit switching in detail.
Answer the following. (Any One) 06
What is error? Explain types of error.
Explain any one network components.
Q.4 Answer the following. (Any Two) 10
Write a short note on transmission control protocol.
What is channelization? Explain FDMA in detail.
What is modulation? Explain types of modulation.
Answer the following. (Any One) 04
Explain connection oriented and connection less services.
What is the use of computer network?
Q.5 Answer the following. (Any Two) 14
What is multiplexing? Explain the types of multiplexing.
What are the types of error detection? Explain in details.
What is routing algorithm? Explain shortest path routing with diagram.