Computer Studies 9th Class 2016 MCQs & Question Answer Leave a comment

Marks: 85 Time: 3 Hrs

COMPUTER STUDIES (Science Group)

SECTION “A” (COMPULSORY)

MULTIPLE CHOICE QUESTIONS (MCQs) (Marks: 15)

Q1. Choose the correct answer for each the given options:

(i) LCD Stands For:

(a) Light code digit
(b) Liquid Crystal display
(c) Light color Display
(d) None of these

(ii) The Process of creating sectors and tracks on a disk known as:

(a) Booting
(b) Tracking
(c) Formatting
(d) listing

(iii) The bar displayed at top of a window is called:

(a) Task bar
(b) Title bar
(c) Tool bar
(d) Menu bar

(iv) Generally, there are two type internal memory of computer:

(a) RAM and ROM
(b) Registers and Floppy Disk
(c) USB and Hard Disk
(d) None of these

(v) The process form of data is known as:

(a) Information
(b) String
(c) Data
(d) Binary

(vi) Which translator translates and executes each program statement at a time ?

(a) Compiler
(b) Interpreter
(c) Assembler
(d) Editor

(vii) It is a device to read image before inputs

(a) Plotter
(b) Scanner
(c) Monitor
(d) Keyboard

(viii) The number of bits in a byte is

(a) Four
(b) Two
(c) Sixteen
(d) eight

(ix) This number system is ideal for the internal working of electronic computer:

(a) Hexadecimal
(b) Binary
(c) Decimal
(d) octal

(x) Analytical Engine was designed by

(a) Hermon Hollerich
(b) Charles Babbage
(c) Pascal
(d) None of them

(xi) A small colourful graphical picture representing a file, folder or program is called:

(a) Folder
(b) Image
(c) Icon
(d) Button

 

(xii) The device that enables a computer to make a dial-up networking:

(a) Mouse
(b) Microphone
(c) Monitor
(d) Modem

(xiii) The associative law of multiplication is written as:

(a) AB = BA
(b) AB+ AC = A(B+ C)
(c) A(BC) = (AB)C
(d) A+B = B+A

(xiv) The command that removes directories and their contents from disk is:

(a) DEL
(b) RD
(c) RMDIR
(d) DELTREE

(xv) Pre-programmed memory is:

(a) SRAM 4
(b) DRAM
(c) DIMM
(d) None of them

SECTION “B” SHORT QUESTION ANSWER (Marks: 36)

NOTE: Answer any 9 questions from this Section. All questions carry equal marks.

Q.2 What is the difference between digital and analogue computer?

Q.3 Write classification of computer according to capacity.

0.4 Define the term Bus. Write the name of its types.

Q.5 Solve the following:
(a) (111001)2 – 10111(2)
(b) 10001(2) / 10110(2)
(c) 110011(2) x 1001(2)
(d) 101010(2) / 1110(2)

Q.6 Convert the following:
(a)(A5D)16 =(?)10
(b) (74)10 = (?)
(c)(100000)2 = (?)10
(d) (126)8=(?)10

Q.7 Why do we use backing storage devices?

Q.8 Write differences between Serial and Parallel Ports.

Q.9 Prove the following equation and also draw Truth Table.
A+A-B=A

Q.10 State and prove Demorgan’s Theorem:
(a) X . Y = X + Y
(b) X + Y = X . Y

Q.11 Differentiate between Internal Memory and External Memory.

Q.12 Draw the K- Map for the following:

  1. ABC + BC + A B C
  2. AB + AB + AB

Q.13 What is an operating system ?

Q.14 Write Advantages of 3rd generation computer.

SECTION “C” (DETAILED ANSWER QUESTIONS) (Marks 24)

NOTE: Attempt any TWO questions from this section. All questions carry equal marks.

Q.15 (a). Differentiate between DOS and Windows.

(b) What is number system? describe different type of number system?

Q.16 (a). What do you mean by purpose device discuss.

(b). Define CPU Describe function of CPU also draw Block diagram.

Q.17 (a). What is the Procedure of setting a screen save?

(b) What are the factors that determine a monitor’s quality?

 

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