SHRI V.K. PANDE COLLEGE OF SCIENCE AND MANAGEMENT HINGANGHAT SESSIONAL EXAMINATION -2009 POST GRADUATION DIPLOMA IN COMPUTER COMMERCIAL APPLICATION SUBJECT :- INFORMATION TECHNOLOGYTIME:- THREE HOURS MARKS:-100 N.B 1:- All questions are compulsory and carry equal marks 2:- Draw neat diagram wherever necessary. EITHER: 20 1. a) What is operating system ? What are the functions of operating system ? write down of UNIX operating system. features the sailent

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b) Differentiate between primary and secondary memory. Explain the types and purpo primary memory. Discuss any two secondary storage devices. EITHER: 20 2. a) What is number system ? Explain Binary, octal & Hexadecimal number system with Why binary number system is most suitable for computer ? Do as directed . i)(110110)2 + (11010)2 ii)(10110)2 + (011010)2

ORb) Give the brief history and development of internet. Explain www in details. What is internet in advertising ? EITHER: (5*4) 3 a) What are the types of languages ? Explain. b) Do as directed. i)(1001110)2 = (?)8 ii)(10767)10 = (?)16 c) Differentiate between analog & digital computer. d) Write a brief note on 'ISDN'.

ORe) Explain ' Internet banking' with advantages and disadvantges. f) Differentiate between Compiler and Interpreter. g) What is software ? Explain system software in brief. h) Explain the structure and working of Hard disk.

EITHER: (5*4) 4. a) What is memory? Differentiate between RAM and ROM. b) Explain Ring network topology in brief. What are its advantages and Disadvantges. c) Discuss the application of E- commerce. d) Write a note on PROM,EPROM and Eeprom.

ORe) Explain star network topology with the help of a block diagram.. f) Explain any two character printers in brief. g) Write a short note on i) ISDN ii) VAN h) Write a short note on Internet server. EITHER: 5 (5*4) a) What are the primary memories ? Explain in brief.

b) Do as directed. i)(5AB)16 = (?)2 ii)(2747)10 = (?)8 c) Differentiate between LAN and WAN. d) ' Computer and Internet are very useful in banking. Justify this statement with suita