Computer Awareness section PYQ'S

 

For KPSC, SSC, and other competitive exams, the Computer Awareness section focuses heavily on the distinction between hardware and software, peripheral devices, and operating system functions.

Below is a comprehensive guide featuring categorized questions, detailed explanations, and conceptual breakdowns.

Part 1: Computer Hardware (Physical Components)

Hardware refers to the physical, tangible parts of a computer that you can touch and feel. It includes the CPU, memory, storage, and peripheral devices.  

1. Which of the following is known as the "Brain" of the computer?

A) RAM

B) CPU

C) Motherboard

D) Hard Disk

Answer: B) CPU (Central Processing Unit) > Explanation: The CPU executes instructions and processes data. It consists of the ALU (Arithmetic Logic Unit) and the CU (Control Unit).  

2. Which type of memory is volatile, meaning it loses data when the power is turned off?

A) ROM

B) PROM

C) RAM

D) SSD

Answer: C) RAM (Random Access Memory) > Explanation: RAM is temporary workspace. ROM (Read-Only Memory) is non-volatile and keeps instructions (like the BIOS) permanently.  

3. What is the permanent storage area within the CPU for frequently used data called?

A) Cache Memory

B) Register

C) Buffer

D) Virtual Memory

Answer: B) Register > Explanation: Registers are the fastest but smallest storage locations located directly inside the CPU. Cache memory is the next fastest, located between the CPU and RAM.  

4. A 'Bit' in computer terminology stands for:

A) Binary digit

B) Binary tree

C) Bivariate Theory

D) Bitwise track

Answer: A) Binary digit > Explanation: A bit is the smallest unit of data (0 or 1). 8 bits make 1 Byte.  

5. Which of the following is an Input device?

A) Plotter

B) Monitor

C) Light Pen

D) Speaker

Answer: C) Light Pen > Explanation: Input devices send data to the computer. A Light Pen allows users to point or draw on the screen. Plotters, monitors, and speakers are Output devices.  

Part 2: Computer Software (Instructions & Programs)

Software is a set of instructions that tells the hardware what to do. It is categorized into System Software and Application Software.  

6. Which of the following is an example of System Software?

A) MS Word

B) Adobe Photoshop

C) Operating System

D) Web Browser

Answer: C) Operating System > Explanation: System software manages the hardware and provides a platform for applications to run. Examples: Windows, Linux, Android.  

7. What is the primary function of a 'Compiler'?

A) To translate High-level language into Machine language

B) To find viruses in the system

C) To connect the computer to the internet

D) To manage files on the hard drive

Answer: A) To translate High-level language into Machine language > Explanation: A compiler translates the entire source code at once. An 'Interpreter' translates code line-by-line.

8. Which of the following is 'Open Source' software?

A) MS Windows

B) Adobe Acrobat

C) Linux

D) Tally

Answer: C) Linux > Explanation: Open Source software allows users to access, modify, and distribute the source code for free.  

9. The process of starting or restarting a computer is known as:

A) Formatting

B) Booting

C) Loading

D) Scheduling

Answer: B) Booting > Explanation: 'Cold Boot' is starting from a power-off state. 'Warm Boot' is restarting via the OS while the power is already on.  

10. A 'Bug' in computer software refers to:

A) A virus

B) A logical error in the program

C) A hardware failure

D) A magnetic interference

Answer: B) A logical error in the program > Explanation: Debugging is the process of finding and removing these errors.

Part 3: Memory Units and Hierarchy

Understanding the size and speed of hardware components is vital.

Unit-Equivalent

1 Nibble -4 Bits

1 Byte-8 Bits

1 KB (Kilobyte)-1024 Bytes

1 MB (Megabyte)-1024 KB

1 GB (Gigabyte)-1024 MB

1 TB (Terabyte)-1024 GB

11. Arrange the following in descending order of speed:

A) RAM > Cache > Hard Disk > Registers

B) Registers > Cache > RAM > Hard Disk

C) Hard Disk > RAM > Cache > Registers

D) Cache > Registers > RAM > Hard Disk

Answer: B) Registers > Cache > RAM > Hard Disk > Explanation: The closer the memory is to the CPU processing core, the faster (and more expensive) it is.  

Part 4: Advanced Hardware & Peripheral Questions

12. What does BIOS stand for?

A) Basic Input Output System

B) Binary Input Output Software

C) Basic Industry Operating System

D) Business Integration Operating System

Answer: A) Basic Input Output System > Explanation: BIOS is firmware stored on a ROM chip that initializes hardware during the booting process (POST - Power On Self Test).  

13. Which port is commonly used to connect a keyboard or mouse to a modern PC?

A) VGA

B) Ethernet

C) USB

D) HDMI

Answer: C) USB (Universal Serial Bus)  

14. What is 'Utility Software'?

A) Software used for painting

B) Software that helps manage, maintain and control computer resources (e.g., Antivirus, Disk Defragmenter)

C) Software used to create websites

D) The hardware inside the CPU

Answer: B)  

Summary Cheat Sheet for Exams

Motherboard: The main circuit board connecting all components.  

SSD vs HDD: SSD (Solid State Drive) is faster and has no moving parts compared to HDD (Hard Disk Drive).  

GUI: Graphical User Interface (using icons and menus, like Windows).  

CLI: Command Line Interface (typing text commands, like MS-DOS).  

Firmware: A mix of hardware and software (software embedded in hardware).