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

BCA IV Semester Assignment 2011

BCA IV Semester

DIGITAL COMPUTER ORGANIZATION (D.C.O.)

ASSIGNMENT NO. 1

 Q1.Explain in brief Second & Fourth generation of computers. Explain in brief Hardware, Software and Firmware?
Q2. What is difference between Microprocessor and Micro-computer ? How processing speed of computer is measured and what is word length? If a computer can process 32 bits at a time then what is its word length.
Q3.Differentiate between a) Computer Organization & Computer Architecture with example. b) Control Flow & Data Flow Computer
Q4.Explain in brief Computer System with the help of diagram .
Q5.Explain the construction of and working of LASER and Dot-Matrix printer.
Q6.Discuss operating principles of a raster scan CRT display and a vector scan CRT display.
Q7.Explain Hard Disk and Floppy Disk.
Q8.What is a Scanner ? Explain the working of different types of Scanner.
Q9.What are various Key switches. What is two key roll-over & two key lockout.?
Q10.Write short notes on the following:
(i) Virtual Memory (ii) Memory Controller (iii) Optical Disc

ASSIGNMENT NO. 2

Q1. Explain in brief different types of RAM & ROM.
Q2. What is program & data memory and where it is used?.
Q3. Explain one bit SRAM & DRAM memory cell with the help of diagram.
Q4. Explain in brief about read/write magnetic head.
Q5. What is Cache Memory? What do you understand by look-aside and look-through cache?
Q6. Explain any two cache replacement algorithm.
Q7. Explain virtual memory mapping technique with the help of an example.
Q8. Explain in brief various cache memory mapping procedures.
Q9. Explain in brief
(a) Batch Processing (c) Multiprogramming (d) Multiprocessing.
Q10. What is Flynn’s Classification of parallel computers? Briefly explain about pipelining.

 Note: Last Date for Assignment No. 1 is 7 June 2011 & Assignment No. 2 is 15 June 2011