|
MCA-203 Data Communication and Computer Networks(N2) (MCA 2ndSemester) | |
| Time:3 Hours | Total Marks: 60 |
|
Instructions to Candidates: 1)Attempt any one question from section A, B, C, D. 2)Section E is compulsory. |
|
| SECTION - A | |
| Marks: 10 Each | |
| Q1 |
a) What is multiplexing? Explain how does Frequency Division Multiplexing
work. b) Discuss the concept of parity checks. Explain how Cyclic Redundancy Check (CRC) works |
| Q2. |
a)Explain Fourier’s theory using analog – analog signals in brief. How can Fourier analysis be applied to digital signals? b)What is maximum data rate of a noisy channel whose bandwidth is 3000 Hz? And whose signal-to-noise ratio is 30 db? |
| SECTION - B | |
| Marks: 10 Each | |
| Q3. |
a)Explain the various layers of TCP/IP reference model. b)Explain The functions performed by physical layer of OSI model |
| Q4. |
a)Write a short note on Telephone System. b)Compare the characteristics of optical fiber and twisted pair cables. |
| SECTION - C | |
| Marks: 10 Each | |
| Q5. |
a)What is CSMA/CD protocol? How does it work? b)Explain the important differences between ALOHA and CSMA/CD protocols. Which is more efficient and why? |
| Q6. | a)What is Routing? Explain the shortest path routing and flooding algorithms. Compare their features. |
| SECTION - D | |
| Marks: 10 Each | |
| Q7. |
a)Discuss the design issues of the transport layer of the OSI model. b)Explain how connections are established and released in TCP/IP. |
| Q8. |
a)Discuss the TCP service model in brief. b)Explain how flow is controlled in TCP protocol. |
| SECTION - E | |
| Marks: 2 Each | |
| Q9. | |
| a)Define Data Communication. | |
| b) Explain the concept of Bandwidth. | |
| c)Define STDM. | |
| d) Define Modulation. | |
| e)List two design issues of network layer. | |
| f)What is the purpose of MODEM? | |
| g)What is piggy backing? | |
| h)Explain the concept of switching. | |
| i)How class-C addresses of IP are used? | j) List any two reasons for errors in transmission media. |
|
MCA-203 Data Communication and Computer Networks(N2) (MCA 2ndSemester) | |
| Time:3 Hours | Total Marks: 60 |
|
Instructions to Candidates: 1)Attempt any one question from section A, B, C, D. 2)Section E is compulsory. |
|
| SECTION - A | |
| Marks: 10 Each | |
| Q1 | Describe the various techniques for error detection and correction. |
| Q2. | Compare SDM, FDM, TDM and STDM. |
| SECTION - B | |
| Marks: 10 Each | |
| Q3. | Describe the OSI model. |
| Q4. | Discuss various transmission media. |
| SECTION - C | |
| Marks: 10 Each | |
| Q5. | Compare various routing algorithms |
| Q6. | Describe different methods for congesion control. |
| SECTION - D | |
| Marks: 10 Each | |
| Q7. | Discuss the transport layer design issues. |
| Q8. | What are the methods for flow control? |
| SECTION - E | |
| Marks: 2 Each | |
| Q9. | |
| a)What is the need for CRC? | |
| b)Define Bandwidth. | |
| c)What is the application of Fourier analysis? | |
| d)What is the need for modulation? | |
| e)Explain packet switching. | |
| f)Distinguish between a data gram and a virtual circuit. | |
| g)Where is modem used? | |
| h)What is terminal handling? | |
| i)Explain the term IP address. | |
| j)List the network layer design issue. | |
| k)Define TCP/IP. | |
| l)What is CSMA/CD? | |
|
MCA-203 Data Communication and Computer Networks(N2) (MCA 2ndSemester) | |
| Time:3 Hours | Total Marks: 60 |
|
Instructions to Candidates: 1)Attempt any one question from section A, B, C, D. 2)Section E is compulsory. |
|
| SECTION - A | |
| Marks: 10 Each | |
| Q1 | What are the Characteristics of Frequency Division Multiplexing |
| Q2. | Discuss about Error Detection codes. |
| SECTION - B | |
| Marks: 10 Each | |
| Q3. | What is a protocol? Write about some important characteristics of a protocol. |
| Q4. | Discuss OSI reference model. |
| SECTION - C | |
| Marks: 10 Each | |
| Q5. | What are basic characteristics of HDLC? Write HDLC frame Structure. |
| Q6. | What are different Routing algorithms? Explain shortest path routing. |
| SECTION - D | |
| Marks: 10 Each | |
| Q7. | Discuss about flow control and buffering. |
| Q8. | What are different elements of transport protocol? |
| SECTION - E | |
| Marks: 2 Each | |
| Q9. | |
| a)What is hamming code? | |
| b)Write about CRC. | |
| c)What are different characteristics of transmission? | |
| d)Differentiate analog and digital communication? | |
| e)What is flooding? | |
| f)What is Leaky bucket? | |
| g)What is Amplitude modulation? | |
| h)What are uses of computer networks? | |
| i)What is piggy backing? | |
|
MCA-203 Data Communication and Computer Networks(N2) (MCA 2ndSemester) | |
| Time:3 Hours | Total Marks: 60 |
|
Instructions to Candidates: 1)Attempt any one question from section A, B, C, D. 2)Section E is compulsory. |
|
| SECTION - A | |
| Marks: 10 Each | |
| Q1 | Compare between analog and digital communication. |
| Q2. | Briefly explain the various errors correction and Error Detection Techniques. |
| SECTION - B | |
| Marks: 10 Each | |
| Q3. | What do you mean by switching? What are the main types of switching? Explain each. |
| Q4. | Briefly chalk down the various tasks performed by the Physical Layer |
| SECTION - C | |
| Marks: 10 Each | |
| Q5. | Explain the sliding window protocol with the algorithms used. |
| Q6. | a)Explain the reasons for congestion in networks. b)Describe briefly about leaky bucket technique of congestion control. |
| SECTION - D | |
| Marks: 10 Each | |
| Q7. | State the various design goals for TCP/IP reference model? Which are the various layers present in TCP/IP model? Briefly explain each layer. |
| Q8. | Explain the role of transport layer briefly. Also explain the concept of flow control and buffering in this layer. |
| SECTION - E | |
| Marks: 2 Each | |
| Q9. | |
| a) Propagation time ____________ proportional to distance and _____________ proportional to propagation speed. | |
| b)Why is a coaxial cable superior to twisted pair cable? | |
| c)Name three types of transmission impairment. | |
| d) In CRC, if the data unit is 111111, the divisor is 1010, what is the dividend at transmitter? | |
| e)Give the hamming code for the bit sequence 11011011. | |
| f)What is the purpose of flow control? | |
| g)An IP address is a ____ bit number. | |
| h)What do you mean by the ALOHA? | |
| i) Name four standard creating bodies in computer networking/data communications. | |
| j)What is the difference between bit rate and baud rate? | |
|
MCA-203 Data Communication and Computer Networks(N2) (MCA 2ndSemester) | |
| Time:3 Hours | Total Marks: 60 |
|
Instructions to Candidates: 1)Attempt any one question from section A, B, C, D. 2)Section E is compulsory. |
|
| SECTION - A | |
| Marks: 10 Each | |
| Q1 | Identify various elements of a network.Explain the terms bandwidth & data rate of a channel.How do they affect the performance of a network? |
| Q2. | What do you mean by Modulation?Differentiate between FDM & TDM. |
| SECTION - B | |
| Marks: 10 Each | |
| Q3. | Differentiate between packet switching and circuit switching.Support your answer with examples. |
| Q4. | What are various types of physical media used for data transmission?Bring out the important differences between Repeaters and Hubs. |
| SECTION - C | |
| Marks: 10 Each | |
| Q5. | What are IEEE standargs? Explain 802.2 in detail. |
| Q6. | What are the various congestion control algorithms? |
| SECTION - D | |
| Marks: 10 Each | |
| Q7. | Explain the role and importance of internet layer TCP/IP model? |
| Q8. | Explain the role of transport layer briefly.Also explain the concept of flow control and buffering in this layer. |
| SECTION - E | |
| Marks: 2 Each | |
| Q9. | |
| a)What are standards? | |
| b)Why do we need protocols? | |
| c)Why is coaxial cable superior to twisted-pair cable? | |
| d)Bandwidth | |
| e)Error Rate. | |
| f)Transmission Delays. | |
| g)CSMA/CD | |
| h)Modems | |
| i)Parity Check | |
| j)Fourier Analysis | |