B.C.A. (Semester III) (CGPA) Examination Oct/Nov-2017
NETWORKING AND DATA COMMUNICATION
Day Date: Saturday, 11-11-2017 Max. Marks: 70
Time: 02.30 PM to 05.00 PM
Instructions: Q.1 and Q.7 are compulsory.
Attempt any two questions from Q. 3 and 4.
Attempt any one question from Q. 5 and 6.
Figures to the right indicate full marks.
Q.1 Choose correct alternatives: 05
a primitive provided by layer n 1 in replay to an indication
primitive. It may acknowledge or complete an action previously
invoked by a request primitive.
Response Indication
Request Confirm
layer is responsible for process to process delivery between
host.
Network Session
Application Transport
A bridge is a device which works in the Layer
Data Link Physical
Transport Session
describes the amount by which the waveform shifts forward
or backward along the time axis.
Phase Frequency
Amplitude Bit rate
Infrared waves have a frequencies in the range of to
300 GHz to 400THz 3 kHz to 1GHz
1GHz to 300GHz None of these
Q.1 State true or false 05
Multiplexing allows to transmit multiple signals using single link
Modulation is a process of varying some properties of carries signal
with respect to modulated signal
Asynchronous serial transmission is faster than synchronous serial
transmission
A circuit-switched network is made of a set of switches connected by
physical links, in which each link is divided into n channels.
In Amplitude modulation, the Amplitude of the carrier signal is varied
with respect to modulated signal, phase and frequency of the carrier
signal remains constant.
Page 2 of 2
SLR-CD-7
Q.1 Fill in the blanks with correct answer 04
Data transmission occurs in one of two ways, either or
noise is the random motion of electrons in a wire which
creates an extra signal not originally sent by the transmitter.
between two words (of the same size) is the number of
differences between the corresponding bits.
refers to the variation in the packet arrival time.
Q.2 Write answer to any two of the following question 14
What is modulation? Why it is needed and describes different types of
modulation.
What is Network Topologies? Explain any two topologies.
What are the different types of Data transmission modes?
Q.3 Write answer to any two of the following question. 14
Explain the history of internet in brief.
What is multiplexing? Explain different types of multiplexing.
Explain the components of data communication
Q.4 Write answer to any two of the following question. 14
Explain the design issues of Layered architecture
Describe unguided Transmission media in details.
What is Switching? Explain Circuit Switching and Packet Switching.
Q.5 Explain ISO-OSI reference model 07
Explain types of Errors and Hamming Code technique with example. 07
Q.6 What is congestion in data communication? What are different congestion
control mechanism, explain in short
07
Explain TCP/ IP protocol suite in detail 07
Q.7 Write short notes on: (Any two) 14
Explain multiple access protocol
Connection oriented and connection less services
ARP and RARP
Types of Network
Cyclic Redundancy Check
Telnet