Quick Revision

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.

Looking for exam process/strategy questions instead? Try the Exam Preparation FAQ →

Computer Fundamentals → Introduction to Computer 38

Edge computing processes data?
Near the source of data generation for reduced latency
click to copy
Digital twin is?
Virtual replica of physical system for simulation and monitoring
click to copy
Quantum entanglement means?
Measurement of one particle instantly affects its entangled partner regardless of distance
click to copy
Post-quantum cryptography aims to?
Develop algorithms resistant to quantum computer attacks
click to copy
STRIDE threat model stands for?
Spoofing, Tampering, Repudiation, Information disclosure, Denial of service, Elevation of privilege
click to copy
OWASP Top 10 is?
List of most critical web application security risks
click to copy
SQL injection attack exploits?
Unvalidated user input in SQL queries
click to copy
Buffer overflow attack overwrites?
Adjacent memory including return address to redirect execution
click to copy
ARP spoofing is?
Sending fake ARP replies to associate attacker MAC with victim IP
click to copy
Rootkit is?
Malware hiding deep in OS to conceal other malware
click to copy
Botnet is?
Network of infected computers controlled remotely by attacker
click to copy
ASLR randomizes?
Memory addresses of process components to hinder exploits
click to copy
DEP/NX prevents?
Execution of code from non-executable memory regions
click to copy
XSS (Cross-Site Scripting) attack?
Injects malicious scripts into web pages viewed by other users
click to copy
CSRF attack tricks?
Authenticated users into unknowingly submitting malicious requests to trusted sites
click to copy
Honypot in cybersecurity is?
Decoy system to detect and study attackers
click to copy
Which attack overwhelms a server with traffic?
DDoS (Distributed Denial of Service)
click to copy
Which is the most secure Wi-Fi protocol?
WPA3
click to copy
Digital watermarking is for?
Copyright protection — embedding ownership information in digital media
click to copy
Zero-knowledge proof allows?
Proving knowledge of a secret without revealing it
click to copy
Federated learning trains ML models?
Across distributed devices — only model updates shared, not raw data
click to copy
Homomorphic encryption allows?
Computation on encrypted data without decrypting
click to copy
TPM chip is used for?
Secure key storage, disk encryption, and attestation
click to copy
Secure Boot in UEFI prevents?
Booting unauthorized or unsigned bootloaders and OS
click to copy
GDPR right to erasure means?
Individuals can request their personal data be deleted
click to copy
PII (Personally Identifiable Information) includes?
Name, SSN, email, phone — data identifying specific individuals
click to copy
Data minimization in GDPR means?
Collect only minimum personal data necessary for the specific purpose
click to copy
Turing machine was proposed by?
Alan Turing
click to copy
The Halting Problem is?
Undecidable — no algorithm can determine if arbitrary program halts
click to copy
P vs NP: P class problems are?
Solvable in polynomial time by deterministic Turing machine
click to copy
NP-complete problems are?
Both in NP and as hard as any other NP problem
click to copy
Traveling Salesman Problem (TSP) is?
NP-hard with no known polynomial solution
click to copy
Actor model of concurrency uses?
Independent actors communicating via message passing — no shared state
click to copy
Rust programming language guarantees?
Memory safety without GC using ownership/borrowing system
click to copy
WebAssembly (WASM) is?
Binary instruction format running in browsers at near-native speed
click to copy
JIT (Just-In-Time) compilation?
Compiles frequently executed code at runtime to machine code
click to copy
Garbage collection (GC) in managed languages?
Automatically reclaims unused memory
click to copy
Generational GC is based on?
Most objects die young — frequent minor GC of young generation
click to copy

Computer Fundamentals → Internet Basics 1

LEO satellite internet (Starlink) orbits at?
550 km (LEO) — much lower latency than GEO
click to copy

Computer Fundamentals → Computer Security 1

Ethical hacking is also called?
Penetration testing
click to copy