Federal Board Class IX Computer Science

SECTION “A”

NOTE: Section-A is compulsory. All parts of this section are to be answered on the question paper itself. It should be completed in the first 20 minutes and handed over to the Centre Superintendent. Deleting / overwriting are not allowed. Do not use lead pencil.

Q.1. Circle the correct option i.e. A/B/C/D. Each part carries one mark.

i. Which of the following is not a high level language?

• BASIC
• FORTRAN
• Assembly Language
• C and C++

ii. What is called the brain of computer?

• RAM
• CPU
• ALU
• CU

iii. The second generation computer used ________

• IC’s
• Microprocessor
• VLSI chip
• Transistors

iv. The System BUS is used to connect the ________

• CPU
• Input / Output Devices
• Main Memory
• All of these

v. Flat Panel Monitors are usually used in ________

• Portable Computers
• Super Computers
• Personal Computers
• Mainframe Computers

vi. Hard Disk is a/an ________ disk that stories data.

• Read only
• Optical
• Magnetic
• Laser

vii. In Computer data / instructions flow in group of bits called ________.

• Words
• Bits
• Nibbles
• Laser

viii. 1 KB is equal to ________.

• 1000 bytes
• 2 bytes
• 2 bites
• 2 bytes

ix. Windows ________.

• have a GUI
• is not an operating system
• is a compiler
• All of those

x. What is the function of dir *.*?

• Lists all the files of extension doc
• Lists all the files of name sample
• Lists all the files
• None of these

xi. Computer virus is simply a ________.

• Disease
• Computer Code
• Type of bacteria
• Hardware component

xii. What does ENIAC stand for?

• Electronic Numerical Integrator & Calculator
• Electronic Numerical Integrator & Calculation
• Electrical Numerical Integrator & Calculator
• Electrical Numerical Integrator & Calculation

SECTION “B”

NOTE: Answer any NINE parts from Section B and any TWO questions from Section C on the separately provided answer book. Use Supplementary answer sheet i.e. Sheet-B if required. Write your answers neatly and legibly.

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

i. Briefly write the reasons for using computers in Banks?

ii. What is compiler? How does it differ from an interpreter?

iii. What is the difference between Low level and High level languages?

iv. Differentiate between System Software and Application Software.

v. What is the difference between Computer Hardware and Software?

vi. Write a short note on Computer Storage.

vii. What is Port? Differentiate between Serial Port, Parallel Port and USB Port.

viii. What is voice recognition software?

ix. What is Plotter?

x. Write briefly about the following DOS commands.

SYS
EDIT
XCOPY

xi. What is an Operating System? List important functions of operating system.

xii. What is Windows explore? How can we start Windows Explorer?

xiii. How does a computer get a virus?

SECTION “C”

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

Q.3. (a) What is CPU? Describe its different units.
Q.3. (b) What is Internet? Describe its importance in society.

Q.4. (a) What is a System Bus? Differentiate between Data bus. Address bus and Control bus.
Q.4. (b) What are Impact Printers? Also explain Dot-Printers and Daisy-Wheel Printers.

Q.5. (a) What are the steps for shutting down and restarting Windows?
Q.5. (b) What are the benefits of using anti-virus programs?