CLASS: BCA
13A / 141
St. JOSEPH’S COLLEGE (AUTONOMOUS) TIRUCHIRAPPALLI – 620 002
SEMESTER EXAMINATIONS – APRIL 2013
TIME: 3 Hrs.
MAXIMUM MARKS: 100
SEM
SET
PAPER CODE
TITLE OF THE PAPER
VI
2010
08UCA630215
COMPUTER NETWORKS
SECTION – A
Answer all the questions:
20 x 1 = 20
Choose the correct answer:
1.
Point-to-point transmission with one sender and one receiver is called ________.
a) Unicasting
b) Multicasting
c) Broadcasting
d) None of the above
2.
When a frame is sent to a group address, all the stations in the group receive it is
called________.
a) Broadcasting
b) Unicasting
c) Multicasting
d) All the above
3.
In hierarchical routing the routers are divided into ________.
a) Node
b) Regions
c) Vector
d) Frames
4.
Transport service is implemented by a ________protocol used between two transport entities.
a) ALOHA
b) Multiple access protocol
c) Transport
d) None of the above
5.
DNS stands for ________.
a) Data Name Service
c) Data Note Service
b)
d)
Domain Name System
Domain Name Set
Fill in the blanks:
6.
PSTN stands for ________.
7.
The use of error-correcting codes is often referred to as ________.
8.
Distance vector routing was used in ________ network.
9.
RTP stands for ________.
10.
________allows users to produce web pages that include text graphics and pointers to other
web pages.
State True or False:
11.
Between each pair at adjacent layer is an interface.
12.
ALOHA is an example of multiple access protocol.
13.
Traffic shaping, which smooth out the traffic on the server side rather than on client side.
14.
SOCKET primitive is used to create a new communication end point.
15.
Each page is assigned a URL that effectively serves as the pages worldwide lane.
Match the following:
16.
802.16
-
a) link state routing
17.
Byte stuffing
-
b) communication protocol
18.
ARPANET
-
c) wireless MAN
19.
UDP
-
d) ASCII protocol
20.
SMTP
-
e) character stuffing
SECTION – B
Answer all the questions:
21.
a.
5 x 4= 20
Write a brief note on the uses of computer networks.
OR
22.
b.
Write any two guided transmission media.
a.
Write a short note on elementary data link protocols.
OR
23.
b.
Write a short note on any two multiple access protocols.
a.
What is internetworking? Discuss it.
OR
b.
Discuss in detail various congestion control algorithm.
24.
a.
What are the socket primitives for TCP? Discuss it.
OR
25.
b.
Write a brief note on UDP.
a.
Write a short note on MIME and SMTP.
OR
b.
Write a short note on cryptography.
SECTION – C
Answer any FOUR questions:
4 x 15 = 60
26.
Explain in detail the communication satellites.
27.
Write a brief note on Bluetooth architecture.
28.
Explain the following routing algorithms.
(i) Distance vector routing
(ii) Hierarchical routing
(iii)Multicast routing.
29.
Write brief note on various elements of transport layer protocols.
30.
Explain in detail about communication security.
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