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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 25

A single layer DVD can store approximately?
4.7 GB
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Blu-ray disc derives its name from?
Blue laser used to read/write
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Which bus connects the CPU to main memory?
Memory bus
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Which level of cache is the fastest?
L1
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Secondary memory is also called?
Auxiliary memory
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Which of the following has the largest storage capacity?
Blu-ray
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Which is NOT a primary memory?
USB Pendrive
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NAND flash is named after which logic gate?
NOT AND (NAND)
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Swap space in Linux is equivalent to which Windows concept?
Both A and B
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Which memory technology is used in USB flash drives?
NAND Flash
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Magnetic tape is suitable for?
Sequential access
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A floppy disk can store?
1.44 MB
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Which of the following has the fastest data transfer rate?
SSD
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The read/write head of an HDD floats above the platter at?
Microscopic distance
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Double-sided DVD can store?
9.4 GB
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Which memory is used to store BIOS in computers?
ROM/Flash
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The capacity of primary memory compared to secondary is?
Smaller
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Which type of memory is used in graphics cards (GPU)?
GDDR
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Which of the following is hardware?
CPU
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Software that manages hardware resources is called?
System software
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The brain of a computer is?
CPU
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ALU stands for?
Arithmetic and Logic Unit
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The Control Unit (CU) of a CPU is responsible for?
Directing operations of processor
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Firmware is?
Software on ROM
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Open source software means?
Source code is publicly available
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Computer Fundamentals → Memory Units 10

Which type of hard disk uses no moving parts?
SSD
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SSD stands for?
Solid State Drive
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The RPM of a hard disk refers to?
Revolutions Per Minute
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PROM stands for?
Programmable ROM
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The main purpose of cache memory is to?
Speed up CPU operations
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ECC RAM stands for?
Error Correcting Code RAM
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The time taken to locate and read data from storage is called?
Seek time plus latency
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The access method of RAM is?
Direct (Random)
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DRAM needs to be refreshed approximately how many times per second?
Thousands
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Which of the following is non-volatile secondary storage?
HDD
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Computer Fundamentals → Number System 2

Terabyte is equal to?
1024 GB
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A petabyte is equal to?
1024 TB
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Computer Fundamentals → Software and Hardware 2

Which of the following is system software?
Windows OS
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A compiler converts?
High-level to machine language (whole program)
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Computer Fundamentals → Operating System Basics 1

Which is NOT an open-source operating system?
Windows 11
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