M.C.A. (Semester III) (CBCS) Examination Nov/Dec-2018
Science
COMPUTER COMMUNICATION NETWORK
Time 2½ Hours Max. Marks: 70
Instructions: All questions are compulsory.
Figures to the right indicate full marks.
Q.1 Choose the correct answer 14
The Stop-And-Wait ARQ, Go-Back-N ARQ, and the Selective Repeat ARQ
are for channels.
Noiseless Noisy
Either a or b None
TCP is a protocol.
stream-oriented message-oriented
block-oriented packet-oriented
How long is an IPv6 address?
32 bits 128 bits
128 bytes 64 bits
The checksum of 1111 and 1111 is
0000 1111
1110 0111
In routing, the least cost route between any two nodes is the route
with the minimum distance.
Path vector Distance vector
Link state None
The first network is
CNNET NSFNET
ASAPNET ARPANET
generates vast numbers of duplicate packets.
Routing Optimality principle
Flooding none
IPV4 Address is
8 bit 16 bit
32bit 64 bit
is used over the wide-area optical fiber links for making the
backbone network.
PPP SONET
HDLC None
10) The design issue of Datalink Layer in OSI Reference Model is
Connection control Representation of bits 8
Synchronization of bits Framing
11) An endpoint of an inter-process communication flow across a computer
network is called
A socket Pipe
Port none
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12) In cyclic redundancy checking, the divisior is the CRC.
One bit less than One bit more than
The same size as None
13) Minimum size of a UDP datagram would be
4 bytes 8 bytes
20 bytes 28 bytes
14) control refers to a set of procedures used to restrict the amount
of data that the sender can send before waiting for acknowledgement.
Flow Error
Transmission None
Q.2 Answer the following. (Any four) 08
Define routing.
What is UDP?
What is piggybacking?
What is optimality principle?
Which are the various applications of Internet?
Write notes on. (Any two) 06
Mention only steps of link state packet routing algorithm.
Explain architecture of Internet.
The following is a dump of a TCP header in hexadecimal format
05320015 00000001 00000110 5OO217FF 00022000
a. What is the source port number?
b. What is the destination port number?
c. What is the sequence number?
d. What is the acknowledgement number?
e. What is the length of the header?
f. What is the type of the segment?
g. What is the window size?
Q.3 Answer the following. (Any two) 08
Explain Remote procedure call.
Explain congestion control in virtual circuit subnet.
Explain HTTP in short.
Answer the following. (Any one) 06
Explain concatenated virtual circuit.
Explain selective repeat protocol in detail.
Q.4 Answer the following. (Any two) 10
Suppose that a message 1001 1100 101 0 00 11 is transmitted using
Internet Checksum (4-bit word). What is the value of the checksum?
Explain load shedding in detail.
Explain architecture of WWW.
Answer the following. (Any one) 04
Find the first address, last address, and number of addresses from the
following address block.
205.16.37.39/24
ii) 17.12.40.0/22
Explain user agent to E-mail with its types.
d
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Q.5 Answer the following. (Any two) 14
Explain UDP format in detail. Also explain uses of UDP.
Explain HDLC in detail.
For a given network below, the routing tables of four nodes E and G are
shown. Suppose that D has estimated its delay to its neighbors E and G
as 1 and 1 msec respectively and updates its routing table using
distance vector routing technique.