Exam Details
| Subject | advanced data communications | |
| Paper | ||
| Exam / Course | computer science and engineering | |
| Department | ||
| Organization | Vardhaman College Of Engineering | |
| Position | ||
| Exam Date | June, 2017 | |
| City, State | telangana, hyderabad |
Question Paper
Hall Ticket No:
Question Paper Code B3401
(AUTONOMOUS) M. Tech I Semester Supplementary Examinations, June 2017
(Regulations: VCE-R15) ADVANCED DATA COMMUNICATIONS
(Digital Electronics and Communication Systems) Date: 05 June, 2017 AN
Time: 3 hours
Max Marks: 70
Answer any FIVE Questions
Each Question carries equal marks
1.
What is Digital-Analog conversion? Derive the bandwidth formula for ASK and FSK.
8M
Differentiate the following with an example for each:
i. Data elements vs Signal elements
ii. Data rate vs Signal rate
6M
2.
Explain the difference between 8QAM and 16QAM methods with an example for each.
8M
Explain the advantage of DPSK over ASK with an example.
6M
3.
Define Data communication. What are its characteristics and components? Explain.
8M
Explain the concept of CSMA/CD protocols with relevant diagrams.
6M
4.
What are the different data transmission modes? Explain the parallel data transmission mode with an example.
8M
What are the goals for fast Ethernet working? Explain in detail.
6M
5.
A multiplexer combines four 100-kbps channels using a time slot of 2 bits. Show the output with four arbitrary inputs. What is the frame rate? What is the frame duration? What is the bit rate? What is the bit duration?
10M
Explain how frame synchronization is carried out in time division multiplexing?
4M
6.
What are the various types of data communication character codes used? Explain any one of them in detail with relevant examples.
8M
Explain the concept of character synchronization in data transmission system.
6M
7.
Explain the difference between asynchronous and synchronous protocols with an example for each.
6M
Write the format of the all the frames used by HDLC. Explain each field in the frames briefly.
8M
8.
Differentiate space division switches and time division switches each with an example.
8M
Explain public switched telephone network with a neat diagram.
6M
Question Paper Code B3401
(AUTONOMOUS) M. Tech I Semester Supplementary Examinations, June 2017
(Regulations: VCE-R15) ADVANCED DATA COMMUNICATIONS
(Digital Electronics and Communication Systems) Date: 05 June, 2017 AN
Time: 3 hours
Max Marks: 70
Answer any FIVE Questions
Each Question carries equal marks
1.
What is Digital-Analog conversion? Derive the bandwidth formula for ASK and FSK.
8M
Differentiate the following with an example for each:
i. Data elements vs Signal elements
ii. Data rate vs Signal rate
6M
2.
Explain the difference between 8QAM and 16QAM methods with an example for each.
8M
Explain the advantage of DPSK over ASK with an example.
6M
3.
Define Data communication. What are its characteristics and components? Explain.
8M
Explain the concept of CSMA/CD protocols with relevant diagrams.
6M
4.
What are the different data transmission modes? Explain the parallel data transmission mode with an example.
8M
What are the goals for fast Ethernet working? Explain in detail.
6M
5.
A multiplexer combines four 100-kbps channels using a time slot of 2 bits. Show the output with four arbitrary inputs. What is the frame rate? What is the frame duration? What is the bit rate? What is the bit duration?
10M
Explain how frame synchronization is carried out in time division multiplexing?
4M
6.
What are the various types of data communication character codes used? Explain any one of them in detail with relevant examples.
8M
Explain the concept of character synchronization in data transmission system.
6M
7.
Explain the difference between asynchronous and synchronous protocols with an example for each.
6M
Write the format of the all the frames used by HDLC. Explain each field in the frames briefly.
8M
8.
Differentiate space division switches and time division switches each with an example.
8M
Explain public switched telephone network with a neat diagram.
6M
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