Computer Science
Multiple Choice
Questions
(MCQs) – Sets 15
with Detailed Explanations
🎓 Welcome to edusoars.blogspot.com!
Your trusted platform for mastering competitive exams.
We provide a comprehensive and ever-expanding library of Multiple Choice Questions (MCQs) designed not just for practice, but for true conceptual mastery.
What We Cover:
Our expert-curated MCQs span a wide array of high-demand subjects, including:
* Technology & Engineering: Computer Science, Engineering
* Core Academics: Mathematics, Science
* Testing Skills: Aptitude, Reasoning
* General Awareness: General Knowledge
Why Choose Edusoars?
We help you turn practice time into measurable progress:
* Conceptual Clarity: Every single MCQ is accompanied by a detailed, insightful explanation. This is crucial—you don't just learn what the answer is, you understand the concept behind the solution, allowing you to learn effectively from every mistake.
* Realistic Readiness: Test your knowledge with our variety of practice quizzes and simulated tests. They are designed to be as realistic as possible, helping you benchmark your performance and build exam-day confidence.
* Content That Grows: We are constantly adding new material across all subjects, ensuring you always have fresh, relevant content that reflects the latest exam patterns.
> Stop hoping you're prepared. Start knowing you are.
If you are serious about succeeding in your competitive exams, edusoars.blogspot.com is the strategic resource you need to reach your goals.
SET 15 – Computer Science MCQs
✅ No repetition from Sets 1–14
✅ 10 brand-new questions
✅ Each explanation
Level: Class 9–10 / Beginners
1. What is cloud computing?
A. Using the computer in bad weather
B. Storing and accessing data over the internet
C. Using only offline software
D. A type of hardware
✅ Correct Answer: B
Explanation:
Cloud computing is the use of remote servers on the internet to store, manage, and process data instead of using local computers or physical storage devices. Services like Google Drive and Dropbox are examples. Cloud computing allows users to access data from anywhere, improves collaboration, and reduces hardware costs.
2. What is a virtual machine?
A. A physical computer
B. An operating system
C. Software that acts like a computer
D. An input device
✅ Correct Answer: C
Explanation:
A virtual machine is software that simulates a physical computer. It allows multiple operating systems to run on one physical machine. Virtual machines are used for testing software, learning operating systems, and improving resource efficiency without needing separate hardware for each system.
3. What is artificial intelligence (AI)?
A. Human intelligence
B. Computer hardware
C. Ability of machines to mimic human intelligence
D. Internet service
✅ Correct Answer: C
Explanation:
Artificial intelligence refers to the capability of machines to perform tasks that usually require human intelligence, such as learning, problem-solving, and decision-making. AI is used in voice assistants, recommendation systems, and self-driving cars. It helps automate complex tasks and improve efficiency.
4. What is machine learning?
A. Manual programming
B. Teaching computers to learn from data
C. Computer networking
D. Software installation
✅ Correct Answer: B
Explanation:
Machine learning is a subset of artificial intelligence where computers learn patterns from data and improve performance without being explicitly programmed. Examples include email spam filters and product recommendations. Machine learning systems become more accurate over time as they process more data.
5. What is Internet of Things (IoT)?
A. Internet speed
B. Connecting everyday devices to the internet
C. Social media
D. Email system
✅ Correct Answer: B
Explanation:
The Internet of Things refers to connecting everyday objects like lights, watches, and refrigerators to the internet. These devices collect and share data to improve automation and efficiency. IoT is used in smart homes, healthcare, and industries to control and monitor systems remotely.
6. What is big data?
A. Small files
B. Data stored in RAM
C. Large and complex data sets
D. Deleted data
✅ Correct Answer: C
Explanation:
Big data refers to extremely large and complex sets of data that cannot be processed using traditional methods. It includes data from social media, sensors, and online transactions. Analyzing big data helps organizations understand trends, make predictions, and improve decision-making.
7. What is a chatbot?
A. A game
B. A hardware device
C. A program that communicates with users
D. A virus
✅ Correct Answer: C
Explanation:
A chatbot is a software application that interacts with users through text or voice. Chatbots are commonly used in customer support and websites to answer questions automatically. They use artificial intelligence to understand user queries and provide quick and helpful responses.
8. What is biometric authentication?
A. Password protection
B. Pin code
C. Using physical traits for verification
D. Software update
✅ Correct Answer: C
Explanation:
Biometric authentication uses unique physical characteristics like fingerprints, facial recognition, or iris scans to verify identity. It provides stronger security than passwords because biometric traits are difficult to copy. Many smartphones and security systems use biometrics for fast and secure access.
9. What is data analytics?
A. Deleting data
B. Storing data
C. Analyzing data to find patterns
D. Copying data
✅ Correct Answer: C
Explanation:
Data analytics involves examining data to discover patterns, trends, and useful information. Businesses use data analytics to understand customer behavior, improve products, and make informed decisions. It transforms raw data into meaningful insights using tools and statistical techniques.
10. What is cybersecurity?
A. Computer speed
B. Internet browsing
C. Protecting systems and data from attacks
D. Software design
✅ Correct Answer: C
Explanation:
Cybersecurity is the practice of protecting computers, networks, and data from cyber threats such as hacking, malware, and data breaches. It includes tools like firewalls, encryption, and antivirus software. Cybersecurity is essential for protecting personal information and maintaining trust in digital systems.
Thank you for visiting! We wish you the absolute best of luck in your studies!
