Federal Board Class IX Computer Science

SECTION “A”

Q.1. Insert the correct option i.e. A/B/C/D in the empty box provided opposite each part. Each part carries one mark.

i. How many bytes can a 16-bit bus can transfer at a time?

• 4
• 8
• 16
• 2

ii. The speed of a computer at which it receives and sends data between various units depends upon:

• Bus width
• Register
• Clock
• Band width

iii. What does SIMM stand for?

• Single in Line Memory Model
• Single in Line Memory Module
• Sinple in Line Memory Model
• Single in Line Memory Module

iv. Which of the following computers belongs to the first generation of computers?

• ENIAC
• Expert system
• Laptop
• system/360

v. Which of the following determines the resolution of an image on screen?

• Hard Disk Capacity
• Number of colour
• Number of pixels
• Type of monitor

vi. Which of the following components is responsible for performing all of the arithmetic and logical operations within a computer?

• Bus
• RAM
• Processor
• Hard Drive

vii. On the wrong spelling of a word, what appears?

• A green line
• Cursor blinking
• A red line
• Tool tip

viii. Pressing CTRL+SHIFT+A causes

• To select the whole documents
• To highlight the selected text
• To capitalize the selected ext.
• Office assistant to appear.

ix. What extension do batch files use?

• COM
• DOC
• BAT
• EXE

SECTION “B”

Q.2. Attempt any NINE parts. The answer to each part should not exceed 3 to 4 lines. (27)

i. Why are machine language and assembly language called low-level languages?

ii. Give three reasons why a laser printer is a better printer than other non impact printers.

iii. Define a scanner and name its types.

iv. Name any six kinds of dialog boxes in a windows application.

v. Write complete words for the following

EGA, CRT, GUI, Bit, ENVAC

vi. State the functions of the DEL, Disk copy and VER commands in DOS.

vii. A technicians needs to prepare a PC for a student who is visually impaired. Which display properties of Windows will enable the technician to select a large font size without affecting the screen resolution?

viii. What display property of Windows would a teacher use to configure the energy saving features of the PC in his or her Computer Lab?

ix. Describe the main functions of CPU.

x. Differentiate between digital and hybrid computers.

xi. Differentiate between parallel port and serial port.

xii. What is the purpose of read/write head of a hard disk?

SECTION “C”

NOTE: Attempt any TWO questions. Each question carries equal marks. (16)

Q.3. (a) What is an operating system? Mention various types of operating systems. (08)
Q.3. (b) Name the tabs in Page Set-Up dialog box. (02)

Q.4. (a) What are the features available in Print Preview? (03)
Q.4. (b) Define any two types of impact printers. (05)

Q.5. (a) What is a plotter? How does it work? Describe the different types of plotters. (01 + 02 + 02)
Q.5. (b) Define CD writer. (03)