NOTE: There are 11 Questions in all.
· Question 1 is compulsory and carries 16 marks. Answer to Q. 1. must be written in the space provided for it in the answer book supplied and nowhere else.
· Answer any THREE Questions each from Part I and Part II. Each of these questions carries 14 marks.
· Any required data not explicitly given, may be suitably assumed and stated.
Q.1 Choose the correct or best alternative in the following: (2x8)
a. The CPU speed of mainframe computers is in the range of
(A) 400 MIPS to 1000 MIPS (B) 30 MIPS to 100 MIPS
(C) 10 MIPS to 30 MIPS (D 500 KIPS
b. The register that stores the address of the next instruction to be executed is
(A) Program Counter (B) Accumulator
(C) Instruction Register (D) Memory Address Register
c. ALU is capable of
(A) Performing Calculations (B) Monitoring System
(C) Controlling Operations (D) Storage of Data
d. The process of transferring data intended for a peripheral device into a disk so that it can be transferred to a peripheral at a more convenient time or in bulk, is known as
(A) Multiprogramming (B) Spooling
(C) Caching (D) Multithreading
e. Multiple choice examination answer sheets are evaluated automatically by
(A) Optical Mark Reader (B) Magnetic Ink Character Reader
(C) Optical Character Reader (D) Bar Code Reader
f. Which of the following is not an external DOS command
(A) DIR (B) FORMAT
(C) DISKCOPY (D) SCANDISK
g. In a word processing package the feature, which displays a document on a screen in a form that closely resembles how a printed document will look like is
(A) Thesaurus (B) WYSIWYG
(C) Print preview (D) Style sheet
h. A computer cannot “boot” if it does not have the
(A) Compiler (B) Loader
(C) Operating System (D) Interpreter
Answer any THREE Questions. Each question carries 14 marks.
Q.2 a. Give the classification of computers based on their mode of use. Also briefly explain the different generations of computers. (8)
b. Define the terms :
(i) Application Program (ii) Application Programmer
(iii) Application Software (iv) Communication software (6)
Q.3 a. Mention the tasks performed by the Utility Programs. (4)
b. What is a Cache memory? Explains about multiple levels of Cache. (4)
c. Name and explain the commonly used industry standard buses. (6)
Q.4 a. Write a short note on Keyboard Buffer. (5)
b. Explain how voice is recognised in a voice recognition system. Give three uses of this system. (6+3)
Q.5 a. Explain how color is generated in a color monitor. (3)
b. List out two advantages and two disadvantages of COM system. Give the full form of COM. (5)
c. What is a plotter? Name the two commonly used types of plotters. Explain the working of any one plotter. (6)
Q.6 a. Explain the access mechanism used in a magnetic disk. (6)
b. If the rotational speed of a disk is 3600 rpm, the disk has 125 sectors/ track and 512 bytes/sector, what is the data transfer rate of the disk system. (3)
c. Write a short note on storage hierarchies. (5)
Answer any THREE Questions. Each question carries 14 marks.
Q.7 a. Describe the basic operations performed by any computer system. (5)
b. Why is a computer often referred to as a computer system? (3)
c. What is an icon? Explain the five commonly seen icons on the desktop. (6)
Q.8 a. What do you understand by term process? How does an Operating System performs process management. (5)
b. Explain how the CPU executes an instruction in a computer system. (5)
c. Name the registers that are used by the ALU to perform various tasks. Explain how these registers help. (4)
Q.9 a. What is virtual memory? When is it used? Explain the three basic concepts used for realization of virtual memory. (8)
b. Name the special categories of software that improve the capability of software. Explain the category, which deals with system maintenance tasks. (6)
Q.10 a. What is the necessity of organizing of I/O software into series of layers? Explain the different layers of the I/O system. (6)
b. Differentiate between internal and external DOS commands. Explain any two commands from each category. (4 + 4)
b. Explain the steps followed to insert the formula in the cell of a worksheet. (4)
c. What is a Mail-Merge? Explain the steps in a Mail-Merge technique. (6)