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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 → Number System 1

Which number system group is most suitable for representing IP addresses?
Binary and Decimal
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Computer Fundamentals → Introduction to Computer 31

The prefix 'kilo' in computing equals?
1024
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The prefix 'mega' in computing equals?
1024²
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Which of following is the correct priority order (high to low) for Boolean operators?
NOT, AND, OR
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The minimum number of NAND gates to implement AND?
2
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Carry lookahead adder is faster than ripple carry because?
It computes carry signals in parallel
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Which memory cell stores one bit using 6 transistors?
SRAM cell
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Which memory cell stores one bit using 1 transistor and 1 capacitor?
DRAM
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Which of the following is NOT a component of CPU?
HDD
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MAR stands for in CPU?
Memory Address Register
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MDR stands for in CPU?
Memory Data Register
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The clock rate determines?
How fast CPU executes instructions
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Which generation first used semiconductor memory?
Third
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The von Neumann bottleneck refers to?
Limited bandwidth between CPU and memory
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Superscalar CPU executes?
Multiple instructions simultaneously
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Pipeline in CPU allows?
Overlapping stages of multiple instructions
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Which cache miss type occurs when cache is empty?
Cold miss (compulsory)
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CISC vs RISC: RISC has?
Few simple instructions
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Branch prediction in CPU is used to?
Prefetch instructions based on likely branch outcome
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Out-of-order execution allows CPU to?
Execute instructions in a different order than programmed for efficiency
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Endianness refers to?
Byte order in multi-byte data storage
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x86 processors use which endianness?
Little-endian
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Which generation introduced microprocessors?
Fourth
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Which company made the first PC?
IBM
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Apple Macintosh was introduced in?
1984
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Android OS is based on?
Linux kernel
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iOS is developed by?
Apple
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HTML stands for?
HyperText Markup Language
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CSS stands for?
Cascading Style Sheets
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Which programming language is used for web scripting?
JavaScript
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Python was created by?
Guido van Rossum
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Java was developed by?
Sun Microsystems (James Gosling)
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Computer Fundamentals → Memory Units 4

Hard disk stores data on?
Magnetic platters
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What is a sector on a hard disk?
Smallest addressable storage unit on a track
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Program counter (PC) holds?
Address of next instruction to fetch
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Instruction Register (IR) holds?
Current instruction being executed
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Computer Fundamentals → Operating System Basics 2

MS-DOS stands for?
Microsoft Disk Operating System
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Which company created Windows OS?
Microsoft
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Computer Fundamentals → Internet Basics 2

The first commercially successful web browser was?
Mosaic/Netscape Navigator
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WWW was invented by?
Tim Berners-Lee
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