Q1. The "Brain" of any computer system is the:

A) ALU

B) Memory

C) CPU

D) Control Unit

E) Monitor

Answer: C

 

Q2. Which part of the CPU performs calculations and logic decisions?

A) Registers

B) ALU (Arithmetic Logic Unit)

C) CU (Control Unit)

D) RAM

E) ROM

Answer: B

 

Q3. Which of the following is considered "Volatile" memory?

A) ROM

B) Hard Disk

C) RAM

D) DVD

E) Flash Drive

Answer: C (Data is lost when power is off)

 

Q4. The printed circuit board that connects all components of the computer is called the:

A) CPU

B) Motherboard

C) RAM Stick

D) Hard Drive

E) SMPS

Answer: B

 

Q5. What does the acronym ROM stand for?

A) Random Only Memory

B) Read Only Memory

C) Real Output Memory

D) Read On Memory

E) Random Output Memory

Answer: B

 

Q6. Which specific type of memory is used to bridge the speed gap between the CPU and RAM?

A) Secondary Memory

B) Cache Memory

C) Virtual Memory

D) Flash Memory

E) Register Memory

Answer: B

 

Q7. The instructions to start (boot) the computer are stored in:

A) RAM

B) Hard Disk

C) ROM (BIOS)

D) Monitor

E) CD-ROM

Answer: C

 

Q8. Which of the following is an Input Device?

A) Monitor

B) Printer

C) Speaker

D) Scanner

E) Projector

Answer: D

 

Q9. Which technology is used in banks to process Cheques quickly?

A) OCR

B) OMR

C) MICR

D) Barcode Reader

E) Light Pen

Answer: C (Magnetic Ink Character Recognition)

 

Q10. Which type of printer uses "Toner" (dry powder) instead of liquid ink?

A) Inkjet Printer

B) Dot Matrix Printer

C) Laser Printer

D) Daisy Wheel Printer

E) Thermal Printer

Answer: C

 

Q11. The tiny battery on the motherboard that keeps the time correct when the computer is off is called:

A) AA Battery

B) Lithium Ion

C) CMOS Battery

D) UPS

E) AC Adapter

Answer: C

 

Q12. Which of the following is a Non-Impact printer?

A) Dot Matrix

B) Daisy Wheel

C) Line Printer

D) Laser Printer

E) Chain Printer

Answer: D (It does not strike the paper)

 

Q13. The smallest unit of data in a computer is a:

A) Byte

B) Bit

C) Nibble

D) KB

E) MB

Answer: B (Binary Digit)

 

Q14. How many bits make up one Byte?

A) 4

B) 8

C) 16

D) 32

E) 64

Answer: B

 

Q15. Which Input device is used to read answers on a multiple-choice answer sheet?

A) MICR

B) OCR

C) OMR

D) Barcode Reader

E) Scanner

Answer: C (Optical Mark Reader)

 

Q16. The speed of a modern CPU is typically measured in:

A) Hz (Hertz)

B) GB (Gigabytes)

C) RPM (Revolutions Per Minute)

D) DPI (Dots Per Inch)

E) Mbps

Answer: A (Usually GHz - Gigahertz)

 

Q17. Which of the following storage devices has the highest capacity?

A) CD

B) DVD

C) Floppy Disk

D) Hard Disk Drive (HDD)

E) Pen Drive

Answer: D (Typically TBs of data)

 

Q18. What is the full form of USB?

A) Universal Serial Bus

B) Unique Service Bus

C) Universal System Board

D) United Serial Board

E) Universal Socket Bus

Answer: A

 

Q19. Which keys on the keyboard are F1, F2, F3... F12 known as?

A) Numeric Keys

B) Toggle Keys

C) Function Keys

D) Control Keys

E) Navigation Keys

Answer: C

 

Q20. Trackball, Joystick, and Mouse are all examples of:

A) Output Devices

B) Pointing Devices

C) Logic Devices

D) Storage Devices

E) Scanning Devices

Answer: B

 

Q21. The output shown on a monitor is called:

A) Hard Copy

B) Soft Copy

C) Live Copy

D) Printed Copy

E) Physical Copy

Answer: B (Hard copy is output on paper)

 

Q22. Which memory needs to be "refreshed" thousands of times per second?

A) SRAM

B) ROM

C) DRAM

D) PROM

E) Flash Memory

Answer: C (Dynamic RAM)

 

Q23. EEPROM stands for:

A) Electronic Erasable Programmable Read Only Memory

B) Electrically Erasable Programmable Read Only Memory

C) Easily Erasable Programmable Read Only Memory

D) Electric Efficient Programmable Read Only Memory

E) Electrically Empty Programmable Read Only Memory

Answer: B

 

Q24. Which port is primarily used for transmitting high-quality Video and Audio together?

A) VGA

B) USB

C) HDMI

D) PS/2

E) Parallel Port

Answer: C (High-Definition Multimedia Interface)

 

Q25. A Barcode Reader is an example of:

A) Processing Device

B) Storage Device

C) Input Device

D) Output Device

E) Communication Device

Answer: C

 

Q26. Which component converts AC voltage (wall power) to DC voltage for the computer components?

A) UPS

B) SMPS (Switched Mode Power Supply)

C) Motherboard

D) CPU

E) Inverter

Answer: B

 

Q27. The resolution of a printer is measured in:

A) PPM (Pages Per Minute)

B) DPI (Dots Per Inch)

C) Hz

D) Pixels

E) Inches

Answer: B

 

Q28. Which of the following is NOT a part of the CPU?

A) ALU

B) Control Unit

C) Registers

D) Hard Disk

E) None of these

Answer: D (Hard Disk is secondary storage, separate from CPU)

 

Q29. What is a "Nibble"?

A) 8 Bits

B) 16 Bits

C) 4 Bits

D) 2 Bits

E) 1 Bit

Answer: C

 

Q30. The "QWERTY" keyboard layout is named after:

A) The inventor of the computer

B) The first six letters of the top row of alphabets

C) The name of the company that made it

D) The scientific name of keys

E) A famous German typist

Answer: B

 

Q31. Which device is used to produce large maps and architectural engineering drawings?

A) Laser Printer

B) Dot Matrix Printer

C) Plotter

D) Scanner

E) Projector

Answer: C

 

Q32. In a CRT monitor, CRT stands for:

A) Cathode Ray Tube

B) Crystal Ray Tube

C) Common Ray Tube

D) Central Ray Tube

E) Cathode Range Tube

Answer: A

 

Q33. A "Driver" in computer terms is:

A) A person who operates the computer

B) A hardware component

C) Software that helps the OS control a piece of hardware

D) A power supply unit

E) A type of memory

Answer: C

 

Q34. Which of the following is a sequential access memory?

A) Hard Disk

B) RAM

C) Magnetic Tape

D) Flash Drive

E) Optical Disk

Answer: C (Like an old cassette tape, you have to rewind/forward to get to data)

 

Q35. Daisy Wheel is a type of:

A) Mouse

B) Printer

C) Scanner

D) Plotter

E) Monitor

Answer: B (An old impact printer)

 

Q36. The fast memory used inside the CPU to store immediate data is:

A) RAM

B) Registers

C) Cache

D) ROM

E) HDD

Answer: B (Registers are inside the CPU; Cache is usually just outside or on the edge)

 

Q37. Which key is known as a "Toggle Key" because it switches a function on or off?

A) Shift

B) Ctrl

C) Caps Lock

D) Enter

E) Esc

Answer: C (Also Num Lock and Scroll Lock)

 

Q38. USB drives (Pen drives) are also known as:

A) Optical Drives

B) Flash Drives

C) Magnetic Drives

D) Network Drives

E) System Drives

Answer: B

 

Q39. What is the function of the "Control Unit"?

A) To store data permanently

B) To perform math

C) To direct the flow of data

D) To display images

E) To cool the computer

Answer: C

 

Q40. Which of the following is NOT hardware?

A) Monitor

B) Windows 10

C) Mouse

D) Printer

E) CPU

Answer: B (Windows 10 is Software/Operating System)

 

Q41. A pixel stands for:

A) Picture Element

B) Picture Elevator

C) Pixel Element

D) Picture Electronic

E) Point Element

Answer: A

 

Q42. Which type of monitor uses light-blocking crystals?

A) CRT

B) LED

C) LCD

D) Plasma

E) OLED

Answer: C (Liquid Crystal Display)

 

Q43. The "Scroll Wheel" on a mouse is used for:

A) Clicking

B) Dragging

C) Viewing different parts of a long document (Scrolling)

D) Selecting

E) Refreshing

Answer: C

 

Q44. Which of the following is an example of an "Impact Printer"?

A) Laser

B) Inkjet

C) Dot Matrix

D) Thermal

E) Plotter

Answer: C

 

Q45. "Burning" a CD means:

A) Destroying it with fire

B) Cleaning it

C) Writing data onto it

D) Reading data from it

E) Ejecting it

Answer: C

 

Q46. The speed of a printer is often measured in:

A) MBps

B) GHz

C) PPM (Pages Per Minute)

D) RPM

E) Kmph

Answer: C

 

Q47. Which optical disk stores the most data?

A) CD

B) DVD

C) Blue-ray

D) Floppy Disk

E) All store the same

Answer: C (Up to 25GB or 50GB)

 

Q48. One Kilobyte (KB) is equal to:

A) 1000 Bytes

B) 1024 Bytes

C) 1000 Bits

D) 1024 Bits

E) 8 Bytes

Answer: B

 

Q49. Which device works as both Input and Output?

A) Printer

B) Scanner

C) Touchscreen Monitor

D) Mouse

E) Speaker

Answer: C (You see output, and you touch it to give input)

 

Q50. The data path (bus) that connects the CPU to memory is often called the:

A) Front Side Bus

B) Back Side Bus

C) USB

D) Serial Port

E) Logic Bus

Answer: A