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GK One-Line Question & Answer

15541+ short questions with short answers, covering every category and sub-category on the site — no long articles to scroll through. Good for a fast recap before an exam, or a few minutes of daily practice.

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Computer Fundamentals → Introduction to Computer 16

Which of the following is an impact printer?
Dot matrix printer
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The function key F5 in most applications is used to?
Refresh
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Which device converts sound waves to digital signals?
Microphone with ADC
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OLED stands for?
Organic Light Emitting Diode
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A scanner's resolution is measured in?
DPI
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Which of the following is a soft copy output?
Data on monitor
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Hard copy output refers to?
Printed output on paper
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Haptic feedback is related to which type of output?
Tactile
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What does the Num Lock key do?
Locks numeric keypad
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Which pointing device is built into laptop computers?
Trackpad (Touchpad)
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A webcam is used for?
Capturing real-time video
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Which memory is volatile in nature?
RAM
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Which is the fastest memory in a computer system?
Register
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The correct memory speed hierarchy (fastest to slowest) is?
Register > Cache > RAM > HDD
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Which memory retains data even after power is turned off?
ROM
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DVD stands for?
Digital Versatile Disc
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Computer Fundamentals → Output Devices 3

Which printer type is most suitable for carbon copies?
Dot matrix
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Which output device is used by architects to draw plans?
Plotter
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Which type of monitor has the best viewing angle?
IPS panel
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Computer Fundamentals → Input Devices 5

Which input device uses infrared or laser light for movement detection?
Optical mouse
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QWERTY keyboard was designed by?
Christopher Latham Sholes
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Keyboard is an example of which type of input device?
Text input device
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Which input device is used to input data from handwritten forms?
OCR
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Which of the following measures the speed of a keyboard?
WPM
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Computer Fundamentals → Internet Basics 1

Which device allows a computer to connect to the internet via phone line?
Modem
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Computer Fundamentals → Memory Units 13

RAM stands for?
Random Access Memory
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ROM stands for?
Read Only Memory
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Cache memory is located?
Between CPU and RAM
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Which type of RAM loses data when not refreshed periodically?
DRAM
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SRAM uses which technology for storage?
Flip-flops
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EPROM stands for?
Erasable Programmable ROM
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EEPROM can be erased using?
Electrical signals
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Virtual memory is a technique that uses?
Hard disk as extension of RAM
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Flash memory is based on which technology?
EEPROM
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The access time of cache memory compared to RAM is?
Faster
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Which of the following is secondary storage?
Hard Disk Drive
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The storage capacity of a hard disk is measured in?
MB and GB
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CD-ROM storage capacity is approximately?
700 MB
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Computer Fundamentals → Number System 2

1 Kilobyte (KB) is equal to?
1024 bytes
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1 Megabyte is equal to?
1024 KB
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