M. B. Khalsa College, Indore (M.P.)

C.C.E- Bsc IV Semester,

Paper: Electronics-II, Subject: Computer Networks

 Multiple Choice Questions

Q1. The information to be communicated in a data communications system is the ____________. (a) Protocol (b) Medium (c) Signal (d) All the above.

Q2. Communication between a computer and a keyboard involves ___________ transmission. (a) Simplex (b) Half-duplex (c) Full-duplex (d) Automatic

Q3. Which encoding method uses alternating positive and negative values for 1’s?

(a) NRZ-I (b) RZ (c) Manchester (d) AMI

Q4. A ________ is a set of rules that governs data communication.

(a) Protocol (b) standard (c) forum (d) None of the above

Q5. The _______ layer lies between the network layer and the application layer.

(a) Physical (b) Data link (c) Transport (d) None of the above

Q6. In the OSI model, encryption and decryption are functions of the ________ layer.  (a) Transport (b) Session (c) Presentation (d) Application

Q7. _______ Cable is used for voice and data communications.

(a) Coaxial (b) Fiber-optic (c) Twisted-pair (d) none of the above

Q8. __________ is the protocol suite for the current Internet.

(a) TCP/IP (b) NCP (c) UNIX (d) ACM

Q9. The Internetworking Protocol (IP) is a ________ protocol.

(a) Reliable (b) Connection-Oriented (c) Both a and b (d) None of the above

Q10. Which multiplexing technique transmits digital signals?

(a) FDM (b) TDM (c) WDM (d) None of the above

Q11. The ATM standard defines ______ layers. (a) Two (b) Three (c) Four (d) Five

Q12. The ATM data packet is a cell composed of ______ bytes. (a) 40 (b) 50 (c) 52 (d) 53

Q13. The _______ layer of Ethernet consists of the LLC sublayer and the MAC sublayer.

(a) Data link (b) Physical (c) Network (d) None of the above

Q14________technology is a set of technologies developed by the telephone companies to provide high data rate transmission. (a) ASL (b) DSL (c) LDS (d) None of the above

 Short Answer Type Question

Q Write a short note on serial data format.

Q Write a short note on co-axial and fiber optical cable.

Q Write a short note on Local Loop and Toll Office.

Q What do you understand by DTE & DCE? Explain in brief.

Q Explain TDM in brief.

Q Explain FDM in brief.

Q Differentiate between Pulse Code Modulation & Delta Modulation.

Q Explain the Framing in brief.

Long Answer Type Question

Q Explain Encoded Data Formats with suitable diagrams.

Q Explain the structure of Telephone System in detail with diagram.

Q What is Hamming code? Give an example to demonstrate how the Hamming Code 

     corrects an error in data transmission?

Q  Explain OSI model with diagram. Explain the functions of each layer.

Q Draw CODEC transmitter and receiver block diagram & explain it.

Q Explain Bit Oriented and Character Oriented Protocol.

Q Explain Ethernet, Token Bus and Token ring with the help of diagrams.

Q Explain functions of each layer of TCP/IP model with the help of diagram.

Q Describe Network Architecture Protocol.

Q Describe ATM protocol Layer & show ATM protocol stacks.

Q  Explain merits and demerits of ISDN & DSL.

Submit To: Prof. R.S. Popli