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Monday, August 31, 2015

Question Paper of COMPUTER NETWORKS, M.Sc. (IT -201) (O) (Sem. – 5th), Paper ID [A0406], PTU Question Paper








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Roll No…………….
Total No. of Questions: 13]

Paper ID [A0406]
M.Sc. (IT -201) (O) (Sem. – 5th)
COMPUTER NETWORKS

Time: 03 Hours                                                            Maximum Marks:75

Instruction to Candidates:
1)      Section-A is compulsory.
2)      Attempt any Nine questions from Section-B.


Section-A

Q1)                                                                                          (15 x 2 =30)

a)     What is the need for modulation of analog data?
b)    What is the purpose of guard band in multiplexing?
c)     What is the basis for working of all sliding window protocols?
d)    What are the advantages and disadvantages of using a star topology in computer networks?
e)     What information is contained in the control field of HDLC protocol?
f)      What is the frame relay technology?
g)     What are the limitations in the user of infrared waves in networks?
h)    What is Ethernet?
i)       What is difference between pure ALOHA and slotted ALOHA protocols?
j)       What is the purpose of Media Access Sub layer in computer networks?
k)    Differentiate between persistent and non-persistent categories of CSMA protocols?
l)       What is sub netting?
m)  What is difference between a Bridge and a Switch?
n)    What are various threats to the data travelling through a network?
o)    What is the function of ARP protocol?
Section-B
(9 x 5=45)
Q2) What are various flow control techniques?
Q3) Explain the Manchester encoding and Differential Manchester encoding techniques with the help of bit sequence 1101 to be transmitted.
Q4) Explain the FDM and TDM multiplexing techniques?
Q5) What is a network topology? Explain different topologies with the  help of  diagrams.
Q6) Discuss features of various standards for physical layers.
Q7) Explain the different types of protocols used to access a channel?
Q8) Differentiate between circuit switching and packet switching?
Q9) List the functions of Physical Layer and Data Link Layer in OSI reference model?
Q10)  Explain the properties of microwave transmission?
Q11) Explain the Shortest Path Routing algorithms.
Q12) What is an IP address? Explain the various naming schemes used in networks?
Q13) What is DNS? Explain the working of a DNS?


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