Computer Science MCQs
Our website offers a wide range of Computer Science MCQs covering core topics such as data structures, algorithms, programming languages, databases, operating systems, networking, software engineering, and artificial intelligence. Each question is designed to test knowledge and improve problem-solving skills, with clear explanations provided for better understanding. Ideal for students, professionals, and exam aspirants, this platform simplifies learning and helps prepare effectively for academic tests and competitive exams.
Q1. Which cloud platform is most widely used in 2025 for enterprise applications?
A. Google Cloud
B. AWS
C. IBM Cloud
D. Oracle Cloud
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Q2. Which programming language is most popular for AI/ML in 2025?
A. Python
B. C++
C. Java
D. R
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Q3. Which database type is best suited for handling unstructured data?
A. Relational Database
B. NoSQL Database
C. Hierarchical Database
D. Network Database
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Q4. Which cybersecurity practice is recommended against ransomware?
A. Disable antivirus
B. Regular data backup
C. Ignore OS updates
D. Weak passwords
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Q5. Which protocol is used for secure communication over the web?
A. HTTP
B. FTP
C. HTTPS
D. SMTP
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Q6. Which technology is the backbone of cryptocurrencies?
A. AI
B. Blockchain
C. IoT
D. Big Data
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Q7. Which company introduced the Copilot AI in Visual Studio Code?
A. Amazon
B. Microsoft
C. Google
D. IBM
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Q8. Which of the following is an example of a version control system?
A. MySQL
B. Git
C. Docker
D. Kubernetes
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Q9. Which AI tool became popular in 2023–2025 for generative responses?
A. Siri
B. Alexa
C. ChatGPT
D. Bixby
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Q10. Which company is leading in quantum computing research?
A. Intel
B. Microsoft
C. IBM
D. Oracle
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Q11. Which concept in AI focuses on making models explainable?
A. Black-box AI
B. Explainable AI (XAI)
C. Reinforcement Learning
D. Data Augmentation
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Q12. Which cloud service model provides infrastructure resources?
A. IaaS
B. PaaS
C. SaaS
D. BaaS
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Q13. Which emerging field combines biology with computing?
A. Nanotechnology
B. Bioinformatics
C. Cybernetics
D. Robotics
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Q14. Which operating system is widely used in servers worldwide?
A. Windows
B. Linux
C. macOS
D. ChromeOS
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Q15. Which big data framework is most popular for distributed data processing?
A. Hadoop
B. Apache Spark
C. Storm
D. Kafka
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Q16. Which law predicts the doubling of transistors on chips every two years?
A. Newton’s Law
B. Moore’s Law
C. Ohm’s Law
D. Murphy’s Law
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Q17. Which is the most used front-end JavaScript framework in 2025?
A. Vue.js
B. React
C. Angular
D. Svelte
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Q18. Which cloud storage service is part of Google Workspace?
A. Google Cloud
B. Google Drive
C. Dropbox
D. OneDrive
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Q19. Which cybersecurity attack involves overwhelming a server with requests?
A. Phishing
B. SQL Injection
C. DDoS Attack
D. Keylogging
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Q20. Which AI learning type uses trial and error for training?
A. Supervised Learning
B. Unsupervised Learning
C. Reinforcement Learning
D. Semi-supervised Learning
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Q21. Which company developed the TensorFlow library?
A. Microsoft
B. IBM
C. Google
D. Facebook
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Q22. Which storage type is fastest among the following?
A. HDD
B. SSD
C. Optical Disk
D. Magnetic Tape
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Q23. Which programming paradigm does C language follow?
A. Object-oriented
B. Functional
C. Procedural
D. Declarative
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Q24. Which is the most common operating system for smartphones?
A. iOS
B. Android
C. Windows Mobile
D. HarmonyOS
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Q25. Which database query language is standard for relational databases?
A. NoSQL
B. SQL
C. GraphQL
D. LINQ
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Q26. Which software development model uses sprints and iterations?
A. Waterfall
B. Agile
C. Spiral
D. Prototype
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Q27. Which AI branch focuses on understanding human language?
A. Computer Vision
B. Natural Language Processing
C. Robotics
D. Deep Learning
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Q28. Which protocol is mainly used for sending emails?
A. SMTP
B. POP3
C. IMAP
D. FTP
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Q29. Which of the following is an open-source operating system?
A. Windows
B. Linux
C. macOS
D. Solaris
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Q30. Which cybersecurity method uses encryption for data security?
A. Hashing
B. Encryption
C. Phishing
D. Keylogging
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