Exam Details
| Subject | advanced data communications | |
| Paper | ||
| Exam / Course | computer science and engineering | |
| Department | ||
| Organization | Vardhaman College Of Engineering | |
| Position | ||
| Exam Date | December, 2017 | |
| City, State | telangana, hyderabad |
Question Paper
Hall Ticket No:
Question Paper Code B3401
(AUTONOMOUS) M. Tech I Semester Regular/Supplementary Examinations, December 2017
(Regulations: VCE-R15) ADVANCED DATA COMMUNICATIONS
(Digital Electronics and Communication Systems) Date: 27 December, 2017 FN
Time: 3 hours
Max Marks: 70
Answer any FIVE Questions
Each Question carries equal marks
1.
Define Modulation. Explain the advantages and disadvantages of each type of modulation
10M
We have available bandwidth of 100 kHz which spans from 200 to 300kHz. What should be the carrier frequency and the bit rate if we modulated our data by using FSK with
4M
2.
Draw a block diagram of an 8-PSK receiver and explain its components.
7M
For a QPSK modulator with an input data rate equal to 10Mbps and a carrier frequency 70 MHz, determine the minimum double-sided Nyquist bandwidth and the baud.
7M
3.
Explain the five components of data communication with a neat diagram.
6M
What are the three criteria necessary for an effective and efficient network?
8M
4.
Categorize and explain the four basic topologies in terms of line configuration.
8M
Describe different data transmission modes used in data communication.
6M
5.
Compare Synchronous time division multiplexing versus Statistical time division multiplexing.
10M
Five channels, each with a 100-kHz bandwidth, are to be multiplexed together. What is the minimum bandwidth of the link if there is a need for a guard band of 10-kHz between channels to prevent interference?
4M
6.
Explain different types of errors, explain each with an Example.
8M
Assume that, in stop-and-wait ARQ system, the bandwidth of the line is 1Mbps and 1 bit takes 20ms to make a round trip. What is the bandwidth-delay product? If the system data frames are 1000 bits length, what is the utilization percentage of the link?
6M
7.
Explain HDLC frame structure with a neat diagram.
8M
Differentiate Synchronous and Asynchronous Protocols.
6M
8.
Compare circuit switching, message switching and packet switching.
10M
Why data communication through circuit switching is not efficient?
4M
Question Paper Code B3401
(AUTONOMOUS) M. Tech I Semester Regular/Supplementary Examinations, December 2017
(Regulations: VCE-R15) ADVANCED DATA COMMUNICATIONS
(Digital Electronics and Communication Systems) Date: 27 December, 2017 FN
Time: 3 hours
Max Marks: 70
Answer any FIVE Questions
Each Question carries equal marks
1.
Define Modulation. Explain the advantages and disadvantages of each type of modulation
10M
We have available bandwidth of 100 kHz which spans from 200 to 300kHz. What should be the carrier frequency and the bit rate if we modulated our data by using FSK with
4M
2.
Draw a block diagram of an 8-PSK receiver and explain its components.
7M
For a QPSK modulator with an input data rate equal to 10Mbps and a carrier frequency 70 MHz, determine the minimum double-sided Nyquist bandwidth and the baud.
7M
3.
Explain the five components of data communication with a neat diagram.
6M
What are the three criteria necessary for an effective and efficient network?
8M
4.
Categorize and explain the four basic topologies in terms of line configuration.
8M
Describe different data transmission modes used in data communication.
6M
5.
Compare Synchronous time division multiplexing versus Statistical time division multiplexing.
10M
Five channels, each with a 100-kHz bandwidth, are to be multiplexed together. What is the minimum bandwidth of the link if there is a need for a guard band of 10-kHz between channels to prevent interference?
4M
6.
Explain different types of errors, explain each with an Example.
8M
Assume that, in stop-and-wait ARQ system, the bandwidth of the line is 1Mbps and 1 bit takes 20ms to make a round trip. What is the bandwidth-delay product? If the system data frames are 1000 bits length, what is the utilization percentage of the link?
6M
7.
Explain HDLC frame structure with a neat diagram.
8M
Differentiate Synchronous and Asynchronous Protocols.
6M
8.
Compare circuit switching, message switching and packet switching.
10M
Why data communication through circuit switching is not efficient?
4M
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