Q1. Which part of the CPU is responsible for fetching instructions from memory and decoding them?

A) Arithmetic Logic Unit (ALU)

B) Control Unit (CU)

C) Registers

D) Cache

E) Floating Point Unit

Answer: B

 

Q2. The specific bus that carries the memory address from the CPU to the RAM is called the:

A) Data Bus

B) Control Bus

C) Address Bus

D) System Bus

E) USB

Answer: C (It is unidirectional).

 

Q3. Which of the following memory types is "Non-Volatile" but can be erased and reprogrammed using electrical signals (used in Flash Drives)?

A) ROM

B) PROM

C) EPROM

D) EEPROM

E) SRAM

Answer: D (Electrically Erasable Programmable Read-Only Memory).

 

Q4. "Cache Coherence" is a problem that arises in:

A) Single-core processors.

B) Multi-core processors (keeping data consistent across caches of different cores).

C) Hard drives.

D) Printers.

E) Keyboards.

Answer: B

 

Q5. The speed difference between the fast CPU and the slower Main Memory is bridged by:

A) Virtual Memory

B) Secondary Storage

C) Cache Memory

D) Registers

E) Flash Memory

Answer: C

 

Q6. "Pipelining" in CPU architecture refers to:

A) Connecting cables in a pipe.

B) A technique where multiple instructions are overlapped in execution (Fetch, Decode, Execute happening simultaneously for different instructions).

C) Cooling the CPU with liquid.

D) Sending data to the internet.

E) Storing data in a sequence.

Answer: B

 

Q7. Which Register holds the address of the next instruction to be executed?

A) Accumulator

B) Instruction Register (IR)

C) Program Counter (PC)

D) Memory Address Register (MAR)

E) Stack Pointer

Answer: C

 

Q8. "DDR" in RAM technology (e.g., DDR4, DDR5) stands for:

A) Double Data Rate

B) Direct Data Rate

C) Dynamic Data Rate

D) Dual Drive RAM

E) Digital Data RAM

Answer: A

 

Q9. Which chipset on the motherboard controls high-speed components like the CPU, RAM, and PCIe graphics card?

A) Southbridge

B) Northbridge

C) BIOS

D) CMOS

E) I/O Controller

Answer: B (In modern CPUs, Northbridge functions are often integrated into the CPU itself).

 

Q10. "Southbridge" chipset typically handles:

A) RAM and Graphics.

B) Slower peripherals (USB, Audio, BIOS, SATA, PCI).

C) CPU clock speed.

D) Network speed.

E) Power supply.

Answer: B

 

Q11. The smallest addressable unit of a monitor's display is called a:

A) Dot

B) Pixel

C) Bit

D) Byte

E) Vector

Answer: B (Picture Element).

 

Q12. Which type of printer uses a grid of tiny pins to strike an inked ribbon against paper?

A) Laser Printer

B) Inkjet Printer

C) Dot Matrix Printer

D) Thermal Printer

E) Plotter

Answer: C

 

Q13. "SATA" (Serial ATA) cables are used to connect:

A) Monitor to CPU.

B) Mouse to CPU.

C) Hard Drives and Optical Drives to the Motherboard.

D) Printer to CPU.

E) Internet to CPU.

Answer: C

 

Q14. "NVMe" (Non-Volatile Memory Express) is a protocol designed specifically for:

A) Old Hard Drives (HDD).

B) Fast SSDs (Solid State Drives) connecting via PCIe.

C) USB Drives.

D) CD-ROMs.

E) RAM.

Answer: B

 

Q15. Which component converts Digital signals from the computer into Analog signals for the monitor (if using VGA)?

A) ALU

B) DAC (Digital-to-Analog Converter)

C) ADC

D) SMPS

E) ROM

Answer: B

 

Q16. The "Aspect Ratio" of a standard modern widescreen monitor is typically:

A) 4:3

B) 16:9

C) 1:1

D) 21:9

E) 5:4

Answer: B

 

Q17. "Refresh Rate" of a monitor is measured in:

A) DPI

B) PPM

C) Hz (Hertz)

D) MBps

E) Pixels

Answer: C (e.g., 60Hz means the image updates 60 times a second).

 

Q18. Which input device is commonly used for CAD (Computer Aided Design) applications to draw precise lines?

A) Mouse

B) Joystick

C) Light Pen or Digitizer Tablet

D) Scanner

E) Barcode Reader

Answer: C

 

Q19. "QR Code" is an example of:

A) 1D Barcode

B) 2D Barcode (Matrix)

C) 3D Image

D) Text File

E) Hardware

Answer: B

 

Q20. "Haptic Feedback" in game controllers or phones refers to:

A) Sound output.

B) Visual flashing.

C) Tactile sensations (Vibration).

D) Heating up.

E) Wireless connection.

Answer: C

 

Q21. The "CMOS Battery" on the motherboard creates a problem if it dies. What is the main symptom?

A) The computer won't turn on.

B) The computer loses the correct System Date and Time on every restart.

C) The mouse stops working.

D) The internet disconnects.

E) The screen goes black.

Answer: B

 

Q22. "BIOS" is stored in which type of memory?

A) RAM

B) Hard Disk

C) ROM (Flash Memory/EEPROM)

D) Cache

E) CD

Answer: C

 

Q23. Which interrupt is generated by an external device (like a keyboard press)?

A) Software Interrupt

B) Hardware Interrupt

C) Trap

D) Exception

E) Internal Interrupt

Answer: B

 

Q24. "Thunderbolt" is a high-speed interface developed by:

A) Microsoft

B) Intel (in collaboration with Apple)

C) Google

D) Samsung

E) IBM

Answer: B

 

Q25. "Form Factor" of a motherboard (e.g., ATX, Micro-ATX) refers to its:

A) Speed

B) Physical dimensions and layout.

C) Memory capacity.

D) Color.

E) Power consumption.

Answer: B

 

Q26. Which of the following is an Output device that produces "Soft Copy"?

A) Laser Printer

B) Plotter

C) Monitor

D) Dot Matrix Printer

E) Speaker (Audio is soft, but usually Soft Copy refers to visual on screen).

Answer: C

 

Q27. "Stylus" is an input device used with:

A) CRT Monitor

B) Touchscreen devices / Graphics Tablets.

C) Printer

D) Scanner

E) Keyboard

Answer: B

 

Q28. "OCR" software is used in conjunction with which hardware?

A) Printer

B) Scanner

C) Speaker

D) Plotter

E) Mouse

Answer: B (To convert scanned images of text into editable text).

 

Q29. What is the function of the "Heat Sink" in a computer?

A) To store heat.

B) To dissipate heat away from hot components (like CPU) to prevent overheating.

C) To warm up the CPU.

D) To power the fan.

E) To look cool.

Answer: B

 

Q30. "GPU" stands for:

A) General Processing Unit

B) Graphics Processing Unit

C) Global Positioning Unit

D) Graphical Peripheral Unit

E) Gaming Processing Unit

Answer: B

 

Q31. Which of the following memory is "Volatile"?

A) Flash Drive

B) Hard Disk

C) RAM

D) Optical Disk

E) ROM

Answer: C

 

Q32. "Daisy Chaining" refers to:

A) Connecting flowers.

B) Connecting multiple devices in a sequence or ring (Device A to B, B to C).

C) Wireless pairing.

D) Printing method.

E) Cleaning cables.

Answer: B

 

Q33. A "Trackball" mouse remains stationary while the user:

A) Moves the whole mouse.

B) Rolls the ball with their thumb/fingers to move the cursor.

C) Uses voice commands.

D) Types on it.

E) Clicks only.

Answer: B

 

Q34. The resolution of a printer is usually measured in:

A) Hz

B) Pixels

C) DPI (Dots Per Inch)

D) RPM

E) CPM

Answer: C

 

Q35. Which specific register holds the result of arithmetic and logical operations?

A) Program Counter

B) Accumulator

C) Instruction Register

D) Stack Pointer

E) Buffer

Answer: B

 

Q36. "Plug and Play" (PnP) capability allows:

A) Games to play automatically.

B) The OS to automatically detect and configure new hardware devices without manual driver installation.

C) Power saving.

D) Faster internet.

E) Wireless charging.

Answer: B

 

Q37. Which memory access method does a Magnetic Tape use?

A) Random Access

B) Sequential Access

C) Direct Access

D) Associative Access

E) Index Access

Answer: B

 

Q38. "L1, L2, and L3" refer to levels of:

A) RAM

B) Hard Disk Speed

C) Cache Memory

D) Network Security

E) User Access

Answer: C

 

Q39. What does "UPS" do when the main power fails?

A) Shuts down the PC immediately.

B) Provides backup battery power for a short time to allow safe shutdown.

C) Speeds up the PC.

D) Connects to the internet.

E) Prints a report.

Answer: B

 

Q40. "Firmware" is traditionally stored in:

A) RAM

B) ROM / Flash ROM

C) Cache

D) Hard Drive

E) Cloud

Answer: B

 

Q41. Which factor has the biggest impact on a Hard Disk Drive's (HDD) speed?

A) Color

B) RPM (Revolutions Per Minute)

C) Weight

D) Size (3.5 inch vs 2.5 inch)

E) Brand

Answer: B (e.g., 7200 RPM is faster than 5400 RPM).

 

Q42. "Biometric Sensors" are considered:

A) Input Devices

B) Output Devices

C) Storage Devices

D) Software

E) Processing Units

Answer: A

 

Q43. The "System Bus" connects:

A) The CPU to the Memory.

B) The Keyboard to the Mouse.

C) The Monitor to the Printer.

D) The Internet to the PC.

E) The Speaker to the Mic.

Answer: A

 

Q44. Which is the fastest memory inside the computer system?

A) L1 Cache

B) L2 Cache

C) CPU Registers

D) RAM

E) SSD

Answer: C

 

Q45. "Hot Swapping" means:

A) Changing parts while the computer is running (e.g., USB drive).

B) Overheating.

C) Changing parts only when off.

D) Sharing data.

E) Wireless transfer.

Answer: A

 

Q46. "HDMI" carries:

A) Video only.

B) Audio only.

C) Both High-Definition Video and Audio.

D) Internet only.

E) Power only.

Answer: C

 

Q47. Identify the "Impact Printer":

A) Laser

B) Inkjet

C) Thermal

D) Line Printer (Drum/Chain)

E) 3D Printer

Answer: D

 

Q48. "Plotters" are mainly used for:

A) Printing text documents.

B) Printing photos.

C) Printing vector graphics (Architectural plans, Maps).

D) Scanning.

E) Gaming.

Answer: C

 

Q49. Which unit controls the flow of data inside the CPU?

A) ALU

B) CU (Control Unit)

C) RAM

D) Cache

E) Bus

Answer: B

 

Q50. "Virtual Reality Headsets" (like Oculus) are:

A) Input Devices only.

B) Output Devices only.

C) Input/Output (I/O) Devices (Screen shows output, sensors track head movement as input).

D) Storage Devices.

E) Processors.

Answer: C

 

Q51. The "Clock Speed" of a CPU is measured in:

A) GB

B) GHz (Gigahertz)

C) Mbps

D) DPI

E) RPM

Answer: B

 

Q52. A "Barcode Reader" uses which technology to read bars?

A) Magnetic Ink

B) Laser beam / Light sensor

C) Radio waves

D) Heat

E) Vibration

Answer: B

 

Q53. "Multi-Core" processor means:

A) It has multiple fans.

B) It has multiple independent processing units (cores) on a single chip.

C) It has more RAM.

D) It uses multiple hard drives.

E) It is very large.

Answer: B

 

Q54. "SSD" lifespan is usually measured in:

A) Years only.

B) TBW (Terabytes Written) / Write Cycles.

C) Hours.

D) RPM.

E) Pixels.

Answer: B

 

Q55. Which of the following is NOT a secondary storage device?

A) CD

B) RAM

C) DVD

D) Flash Drive

E) HDD

Answer: B (RAM is Primary).

 

Q56. "Seek Time" in a Hard Disk is:

A) Time to boot.

B) Time taken by the read/write head to move to the correct track.

C) Time to rotate the platter.

D) Time to install software.

E) Time to print.

Answer: B

 

Q57. "Latency Time" (Rotational Delay) in a Hard Disk is:

A) Time for the correct sector to rotate under the head.

B) Time to move the arm.

C) Time to transfer data.

D) Time to format.

E) Time to cool down.

Answer: A

 

Q58. "Access Time" = ?

A) Seek Time + Latency Time

B) Seek Time - Latency Time

C) RPM x Size

D) Transfer Rate

E) Boot Time

Answer: A

 

Q59. A "Digitizer" converts:

A) Digital to Analog.

B) Analog information (like drawing) into Digital form.

C) Text to Speech.

D) Audio to Video.

E) Color to Black and White.

Answer: B

 

Q60. Which bus is bi-directional?

A) Address Bus

B) Data Bus

C) Control Bus (Typically mix, but mostly command out).

D) None.

E) All.

Answer: B (Data travels to and from CPU).