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Computer Hardware — GK Questions with Answers

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46 questions
  1. A part of a computer that you can see and touch is called what?
    1. Software
    2. Peripheral
    3. Storage
    4. Hardware
    Show answer

    Answer: (D) Hardware

    Anything physical that you can see and touch is hardware.

  2. Which of these is not hardware?
    1. Processor chip
    2. Printer
    3. Mouse
    4. Java
    Show answer

    Answer: (D) Java

    Java is a programming language.

  3. What is the commonest way to enter text and numbers into a computer?
    1. Plotter
    2. Scanner
    3. Printer
    4. Keyboard
    Show answer

    Answer: (D) Keyboard

    Text and numbers are entered by the keyboard.

  4. Caps Lock and Num Lock belong to which type of keys?
    1. Modifier keys
    2. Toggle keys
    3. Function keys
    4. Cursor keys
    Show answer

    Answer: (B) Toggle keys

    Pressing them flips their state from one to the other.

  5. Shift, Ctrl and Alt belong to which category of keys?
    1. Modifier
    2. Primary
    3. Function
    4. Candidate
    Show answer

    Answer: (A) Modifier

    They change the job of another key.

  6. Which key sends the cursor to the start of a line?
    1. Page Up
    2. Shift
    3. Home
    4. Enter
    Show answer

    Answer: (C) Home

    Home goes to the start of the line; End to the end.

  7. Which key makes the indent of a paragraph in Word?
    1. Tab
    2. Shift
    3. Delete
    4. Esc
    Show answer

    Answer: (A) Tab

    Tab moves the cursor to a pre-set place on the right.

  8. Which one is not a pointing device?
    1. Mouse
    2. Joystick
    3. Trackball
    4. Keyboard
    Show answer

    Answer: (D) Keyboard

    The keyboard enters text; it does not point at the screen.

  9. Who built the first mouse?
    1. Douglas Engelbart
    2. William English
    3. Daniel Coogher
    4. Robert Zawacki
    Show answer

    Answer: (A) Douglas Engelbart

    Engelbart built the mouse in 1963.

  10. Which button works as the “middle button”?
    1. Right button
    2. Scroll wheel
    3. Touch bar
    4. Left button
    Show answer

    Answer: (B) Scroll wheel

    The scroll wheel acts as a third button when pressed.

  1. What is the main use of a joystick?
    1. Controlling sound
    2. Playing computer games
    3. Entering text
    4. Drawing pictures
    Show answer

    Answer: (B) Playing computer games

    A joystick is used in gaming and flight simulators.

  2. In what range of directions does a joystick move?
    1. 30°
    2. 60°
    3. 90°
    4. 360°
    Show answer

    Answer: (D) 360°

    A joystick moves in every direction, i.e. 360°.

  3. Which device is used for drawing and selecting menus?
    1. Keyboard
    2. Mouse
    3. Touch screen
    4. Light pen
    Show answer

    Answer: (D) Light pen

    The light pen has a photocell.

  4. Which device is common in ATMs, hospitals and airline reservations?
    1. Light pen
    2. Touch screen
    3. Joystick
    4. Trackball
    Show answer

    Answer: (B) Touch screen

    The screen that takes input through the touch of a finger.

  5. Parallel lines printed on packed goods are known as —
    1. Prices
    2. OCR
    3. Scanners
    4. Barcodes
    Show answer

    Answer: (D) Barcodes

    A barcode is a pattern of dark and light lines that a machine can read.

  6. Which optical input device reads pencil marks?
    1. OMR
    2. Punch card reader
    3. Optical scanner
    4. Magnetic tape
    Show answer

    Answer: (A) OMR

    OMR detects the presence of marks.

  7. Which quality of characters does OCR recognise with the help of a light source?
    1. Shape
    2. Size
    3. Colour
    4. Ink used
    Show answer

    Answer: (A) Shape

    OCR identifies a character by its shape.

  8. Expand MICR.
    1. Magnetic Ink Character Register
    2. Magnetic Ink Code Reader
    3. Magnetic Ink Character Recognition
    4. Magnetic Ink Cases Reader
    Show answer

    Answer: (C) Magnetic Ink Character Recognition

    MICR = Magnetic Ink Character Recognition.

  9. What processes large quantities of cheques?
    1. OCR
    2. MICR
    3. OMR
    4. Barcode reader
    Show answer

    Answer: (B) MICR

    Cheques carry magnetic-ink characters at the bottom.

  10. Which device recognises the physical traits of a person?
    1. Smart card
    2. Biometric sensor
    3. Barcode
    4. MICR
    Show answer

    Answer: (B) Biometric sensor

    A biometric sensor reads fingerprint, face and the like.

  1. Which device brings a printed diagram into the computer?
    1. Printer
    2. Mouse
    3. Scanner
    4. Touchpad
    Show answer

    Answer: (C) Scanner

    A scanner makes a paper picture digital.

  2. What identifies a flatbed scanner?
    1. Small, needs several passes
    2. Large, covers a page in one go
    3. A rolling drum
    4. Only colour
    Show answer

    Answer: (B) Large, covers a page in one go

    A handheld needs several passes; a flatbed needs one.

  3. Which device captures video?
    1. Webcam
    2. Microphone
    3. Monitor
    4. Mouse
    Show answer

    Answer: (A) Webcam

    A webcam is used in chats and video conferences.

  4. Which card is needed to turn voice digital?
    1. Network card
    2. Sound card
    3. PC card
    4. Smart card
    Show answer

    Answer: (B) Sound card

    The sound card digitises voice and plays it back.

  5. Which group has only input devices?
    1. Mouse, keyboard, monitor
    2. Mouse, keyboard, printer
    3. Mouse, keyboard, plotter
    4. Mouse, keyboard, scanner
    Show answer

    Answer: (D) Mouse, keyboard, scanner

    Monitor, printer and plotter are output devices.

  6. The actual print of a picture taken with a digital camera is considered what?
    1. Data
    2. Output
    3. Input
    4. The process
    Show answer

    Answer: (B) Output

    The result that comes out is output.

  7. What is the smallest unit of an image on a computer screen?
    1. Unit
    2. Pixel
    3. Array
    4. Resolution
    Show answer

    Answer: (B) Pixel

    An image is built of dots (pixels).

  8. When a monitor’s resolution goes up, its pixels become —
    1. Larger
    2. Further apart
    3. Closer together
    4. Less clear
    Show answer

    Answer: (C) Closer together

    Densely packed pixels mean higher resolution.

  9. What is the shape of a CRT?
    1. Circular
    2. Rectangular
    3. Elliptical
    4. Conical
    Show answer

    Answer: (B) Rectangular

    A CRT is the rectangular desktop monitor.

  10. The rate at which scanning repeats in a CRT is called —
    1. Refresh rate
    2. Resolution
    3. Pitch
    4. Bandwidth
    Show answer

    Answer: (A) Refresh rate

    Refresh rate is measured in Hz.

  1. Which device gives hard copy on paper?
    1. Mouse
    2. Keyboard
    3. LCD monitor
    4. Printer
    Show answer

    Answer: (D) Printer

    The printer prints output on paper.

  2. In which unit is printer speed measured?
    1. PPM
    2. DPI
    3. BIT
    4. MHz
    Show answer

    Answer: (A) PPM

    Speed is in PPM/LPM/CPS; DPI measures resolution.

  3. What kind of printer is the dot matrix?
    1. Non-impact
    2. Impact
    3. Thermal
    4. Page
    Show answer

    Answer: (B) Impact

    Its pins strike the ribbon.

  4. Which are examples of non-impact printers?
    1. Laser and dot matrix
    2. Inkjet and laser
    3. Inkjet and dot matrix
    4. Only dot matrix
    Show answer

    Answer: (B) Inkjet and laser

    Inkjet and laser do not strike.

  5. In a laser printer the beam is directed on which surface?
    1. Magnetised
    2. Photosensitive
    3. A metal plate
    4. A liquid
    Show answer

    Answer: (B) Photosensitive

    On the photosensitive surface of the drum.

  6. Which printer is unsuitable for printing on multi-carbon forms?
    1. Daisy wheel
    2. Dot matrix
    3. Laser
    4. Line printer
    Show answer

    Answer: (C) Laser

    A laser printer does not strike, so no carbon copy is made.

  7. Which device makes large construction plans and blueprints?
    1. Printer
    2. Plotter
    3. MICR
    4. OCR
    Show answer

    Answer: (B) Plotter

    A plotter draws vector pictures with pen-like tools.

  8. What type of devices are speakers and headphones?
    1. Input
    2. Input/output
    3. Software
    4. Output
    Show answer

    Answer: (D) Output

    They play sound out.

  9. The transfer of data from the CPU to peripheral devices happens through —
    1. Interfaces
    2. Buffer memory
    3. Modems
    4. I/O ports
    Show answer

    Answer: (D) I/O ports

    I/O ports are the external interfaces.

  10. Which port is a printer most often connected to?
    1. Serial
    2. Parallel
    3. Firewire
    4. Only LAN
    Show answer

    Answer: (B) Parallel

    The parallel port is fast and connects to the printer.

  1. Which port gives slow data transmission?
    1. Serial
    2. Parallel
    3. Firewire
    4. USB
    Show answer

    Answer: (A) Serial

    In serial, one bit goes through a single wire.

  2. Expand USB.
    1. Unicode Smart Bus
    2. Universal Structural Bus
    3. Unicode Serial Bus
    4. Universal Serial Bus
    Show answer

    Answer: (D) Universal Serial Bus

    USB = Universal Serial Bus.

  3. Which port connects multimedia devices such as a video camera?
    1. Firewire
    2. Serial
    3. Parallel
    4. USB only
    Show answer

    Answer: (A) Firewire

    Firewire is for audio-video and heavy data.

  4. In which format does an audio file shrink to about one-tenth?
    1. DOC
    2. PNG
    3. GIF
    4. MP3
    Show answer

    Answer: (D) MP3

    MP3 uses lossy compression.

  5. What turns spoken voice into words?
    1. Speech input hardware
    2. Speech recognition software
    3. Talking software
    4. Word recognition software
    Show answer

    Answer: (B) Speech recognition software

    Software does this job.

  6. Which terminal can be programmed by the user?
    1. Dumb terminal
    2. VDT
    3. Smart terminal
    4. Intelligent terminal
    Show answer

    Answer: (D) Intelligent terminal

    The intelligent terminal is programmable.

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