This download link is referred from the post: PTU B.Tech 7th Semester Last 10 Years Previous Question Papers|| Punjab Technical University 2011-2021
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Total No. of Pages : 02
Total No. of Questions : 18
B.Tech. (EE) (2012 Onwards E-II) (Sem.-7)
NETWORK AND DATA COMMUNICATION
Subject Code : BTEE-804E
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M.Code: 71940
Time: 3 Hrs.
Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
- SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
- SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
- SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.
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SECTION-A
Answer briefly :
- How do guided media differ from unguided media?
- A noiseless 4-kHz channel is sampled every 1 msec. What is the maximum data rate?
- List two advantages and two disadvantages of having international standards.
- Differentiate between FDM and DM. Which multiplexing technique uses digital signals?
- What is the function of a modem? Why is it called a modem?
- Difference between network ID and IP address.
- What is data encapsulation?
- Differentiate between Voice Network and Data Network.
- Write the concept of layer protocols and layer interfaces.
- Give the difference between packet switching and message switching.
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SECTION-B
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- Briefly explain the coaxial cable, optical fiber, twisted pair and its applications.
- Compare between datagram and virtual circuit subnet.
- What is cyclic code and explain Cyclic Redundancy Check (CRC) code?
- Write short notes on circuit switching, packet switching and message switching.
- What are the different services that TCP provides to Applications program?
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SECTION-C
- What are the functions performed by each and every layer of OSI Model? Explain briefly.
- Discuss briefly the following polar encoding schemes :
- NRZ
- RZ
- Manchester
- Differential Manchester
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- Write short notes on any two:
- X.21 communication Standard
- Code division multiple access
- Wavelength-division multiplexing
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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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This download link is referred from the post: PTU B.Tech 7th Semester Last 10 Years Previous Question Papers|| Punjab Technical University 2011-2021