Download PTU B.Sc IT (BCA) 2019 May 4th Semester 74086 COMPUTER NETWORKS Question Paper

Download PTU (Punjab Technical University) BSc IT (BCA) 4th Semester 74086 COMPUTER NETWORKS Last 10 Years 2020, 2019, 2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011 and 2010 Previous Question Papers.

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Roll No. Total No. of Pages : 02
Total No. of Questions : 07
B.Sc.(IT) (2015 & Onwards) (Sem.?4)
COMPUTER NETWORKS
Subject Code : BSIT-404
M.Code : 74086
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains SIX questions carrying TEN marks each and students have
to attempt any FOUR questions.

SECTION-A
1. Answer briefly :
a. What is full duplex communication?
b. List important features of MAN.
c. What are dial up lines?
d. Define Frequency Spectrum.
e. What is VHF?
f. Define Byte Stuffing.
g. List the important features of Bus Topology.
h. What is infrared transmission?
i. Define Hamming Distance.
j. What is optimality principle?
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1 | M - 7 4 0 8 6 ( S 3 ) - 1 9 6 9
Roll No. Total No. of Pages : 02
Total No. of Questions : 07
B.Sc.(IT) (2015 & Onwards) (Sem.?4)
COMPUTER NETWORKS
Subject Code : BSIT-404
M.Code : 74086
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains SIX questions carrying TEN marks each and students have
to attempt any FOUR questions.

SECTION-A
1. Answer briefly :
a. What is full duplex communication?
b. List important features of MAN.
c. What are dial up lines?
d. Define Frequency Spectrum.
e. What is VHF?
f. Define Byte Stuffing.
g. List the important features of Bus Topology.
h. What is infrared transmission?
i. Define Hamming Distance.
j. What is optimality principle?
2 | M - 7 4 0 8 6 ( S 3 ) - 1 9 6 9
SECTION-B
2. Describe the construction, working principle and applications of coaxial cable and
twisted pair cable.
3. Explain and compare the important features of circuit, message and packet switching.
4. Compare the important features of FDM, TDM and CDM with examples.
5. Explain and compare the important features of CSMA, CSMA/CD and CSMA/CA
protocols.
6. What is congestion? Explain various congestion control policies.
7. Write a short notes on the following :
a. Optical Fiber Transmission
b. OSI model










NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
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