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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 40

LLM in AI stands for?
Large Language Model
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GPS stands for?
Global Positioning System
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How many satellites are needed for GPS positioning?
4+
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QR code stands for?
Quick Response code
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NFC stands for?
Near Field Communication
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RFID stands for?
Radio Frequency Identification
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USB Type-C connector is?
Symmetrical/reversible
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Thunderbolt 4 maximum speed is?
40 Gbps
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Which of the following is a lossless compression format?
PNG
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JPEG uses which type of compression?
Lossy
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MP3 is a compressed format for?
Audio
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Which video format is most widely supported?
MP4
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PDF was developed by?
Adobe Systems
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Which file format is used for vector graphics?
SVG
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BMP stands for?
Bitmap
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GIF supports?
Only 256 colors
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Which image format supports transparency?
PNG
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ZIP file format is used for?
File archiving and compression
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Which Linux command displays current directory?
pwd
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Which Linux command changes directory?
cd
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Which Linux command creates a directory?
mkdir
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Which Linux command deletes a file?
rm
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Which Linux command copies a file?
cp
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Which Linux command moves or renames a file?
mv
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chmod in Linux is used to?
Change file permissions
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Which Linux command displays running processes?
ps
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grep command in Linux is used to?
Search text patterns in files
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| (pipe) in Linux connects?
Commands — output of one as input of next
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Which Linux command shows disk usage?
df
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sudo in Linux means?
Super user do
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cron in Linux is used for?
Scheduling recurring tasks
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Which Windows command shows all running processes?
tasklist
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ping command tests?
Network connectivity and latency
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tracert (Windows) / traceroute (Linux) shows?
Path packets take to destination
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nslookup is used for?
DNS lookup queries
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netstat shows?
Active network connections and ports
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Which programming language is primarily used for iOS app development?
Swift
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Android apps are primarily developed in?
Java and Kotlin
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Which company developed Kotlin language?
JetBrains
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C# is primarily used with which framework?
.NET (Microsoft)
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