ENGINEERING ASSISTANT AND TECHNICIAN IN PRASAR BHARATI

STAFF SELECTION BOARD

ENGINEERING ASSISTANT AND TECHNICIAN IN PRASAR BHARATI

PAPER – II

Part (F)

Information Technology

1.    (a) What is the main use of an operating system? Give few names of operating systems for personal computers and explain any one of them.                                                                       25

(b) What are the steps in data acquisition? Explain the data acquisition steps using an example of preparing a bill of sale. Assume that the customer purchases three items form the ABC general stores. The items codes, item names, prices and quantities of each item may be assumed.     25

2.    (a) What is .gif compressed image format? Explain any of the methods of compression that are used in gif compression. Approximately how much compression is achievable with this compression?                                                                                                                                25

(b) What are the functions of a disk interface? Give the names of four standard interfaces. Give a brief description of a popular interface used with personal computers.                                        25

3.    (a) What do you understand by the term “Killer-application”? Why e-mail is called a killer application? Explain the different parts of an e-mail address.                                                      25

(b) What are operational, tactical, strategic and statutory information which would be required by a hospital?                                                                                                                                    25

4.    (a) Explain the system architecture of e-commerce by looking at it as set of layers with the physical network as the bottom layer and applications as the top layer.                                      25

(b) What is a Trojan? In what way is it different from a virus? How do you remove a Trojan from your personal computer?                                                                                                              25

5.    (a) Describe the relationships of bits, byes, characters, fields, records, files, tables and databases. What are different file processing types? Explain any one of them.                           25

(b) What is the difference between a speaker-dependent and a speaker-independent speech to text system? What are the applications of a speaker-independent text to speech system? What is the current status of such systems?                                                                                              25

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