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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 Networks → Introduction to Computer Networks 38

What is AI-native 6G architecture
AI integrated into all network layers for self-optimization
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What is terahertz communication
Using 100GHz-10THz frequencies for very high bandwidth 6G
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What is reconfigurable intelligent surface (RIS)
Passive reflecting elements to control wireless propagation
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What is integrated sensing and communication (ISAC)
Combining radar sensing with communication in same waveform
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What is holographic communication requirement
Multi-Tbps bandwidth and sub-ms latency
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What is quantum communication advantage
Theoretically unbreakable security via quantum key distribution
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What is quantum entanglement used for in networking
Distributing quantum keys and quantum teleportation
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What is satellite-terrestrial network integration
Combining satellite and ground networks for seamless global coverage
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What is non-terrestrial network (NTN)
Satellite HAP and airborne communication platforms
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What is HAP (High Altitude Platform)
Aircraft or balloon at 20km providing wireless coverage
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What is HAPS
High Altitude Platform Station for communication
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What is LEO satellite advantage for latency
Lower orbit means lower propagation delay than GEO
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What is inter-satellite link (ISL)
Direct communication link between satellites
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What is optical ISL advantage
Very high bandwidth with low interference using laser light
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What is regenerative satellite payload
Satellite processing and re-transmitting signal (not just amplifying)
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What is feeder link in satellite
Link between ground station and satellite
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What is user link in satellite
Link between satellite and end user terminal
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What is rain attenuation in satellite
Signal loss due to rain especially at Ka-band frequencies
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What is Starlink gen2 improvement
Higher capacity with inter-satellite links for lower latency routing
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What is Amazon Kuiper
Amazon LEO broadband satellite constellation
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What is OneWeb satellite constellation
LEO satellite internet constellation
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What is VSAT
Very Small Aperture Terminal for satellite communication
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What is DVB-S2X
Satellite broadcast standard with advanced coding and modulation
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What is satellite return channel
Uplink from user to satellite (often slower than downlink)
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What is computer network impact on society
Enabling global communication commerce education and innovation
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What is digital divide
Gap between those with and without internet access
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What is network neutrality debate
Whether ISPs should treat all traffic equally
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What is surveillance capitalism
Business model exploiting personal data collected from networks
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What is privacy by design
Building privacy protections into systems from the start
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What is data localization
Requiring data to be stored and processed within specific country
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What is encryption backdoor debate
Whether governments should have access to encrypted communications
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What is the role of networks in AI
Enabling distributed training inference at scale and data collection
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What is the future importance of Computer Networks
Growing - foundation for all digital transformation and emerging tech
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What is OFDM cyclic prefix
Copy of end of symbol prepended to prevent ISI
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What is multipath delay spread
Time difference between first and last multipath arrival
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What is coherent detection in optics
Using phase information for demodulation
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What is optical SNR (OSNR)
Ratio of signal to noise in optical domain
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What is FEC overhead in OTN
Extra bytes for Forward Error Correction
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Computer Networks → Physical Layer 1

What is quantum repeater
Extending quantum communication range via entanglement swapping
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Computer Networks → Types of Networks 1

What is internet access as human right
UN recognized internet access as important for human rights
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