What is phishing? A. Upgrading computer operating systems B. Fraudulent messages used to steal personal information. C. Backing up network data safely D. Sorting files into folders Correct answer is: B. Fraudulent messages used to steal personal information. 📖 Read Detailed Explanation → Computer MCQs for Competitive Exams Constable Model Past paper 2025 PDF Leave a Comment | Umar
A. Upgrading computer operating systems B. Fraudulent messages used to steal personal information. C. Backing up network data safely D. Sorting files into folders
Which Linux command changes file ownership? A. chmod B. chown C. mkdir D. rm Correct answer is: B. chown 📖 Read Detailed Explanation → Computer Science MCQS Leave a Comment | Umar
What is Quantum Supremacy? A. When a computer achieves zero energy loss B. When a quantum computer solves problems impossible for classical computers. C. When a network is fully secure from hacking D. The mass production of microchips Correct answer is: B. When a quantum computer solves problems impossible for classical computers. 📖 Read Detailed Explanation → Computer Science MCQS Leave a Comment | Umar
A. When a computer achieves zero energy loss B. When a quantum computer solves problems impossible for classical computers. C. When a network is fully secure from hacking D. The mass production of microchips
What does the Turing Test measure? A. Computer screen resolution B. Machine intelligence similar to humans. C. Data transmission speed D. Battery lifespan of hardware Correct answer is: B. Machine intelligence similar to humans. 📖 Read Detailed Explanation → Computer Science MCQS Leave a Comment | Umar
A. Computer screen resolution B. Machine intelligence similar to humans. C. Data transmission speed D. Battery lifespan of hardware
What is BGP used for in networking? A. Assigning local IP addresses B. Routing between autonomous systems on the internet. C. Encrypting user passwords D. Connecting wireless printers Correct answer is: B. Routing between autonomous systems on the internet. 📖 Read Detailed Explanation → Computer Science MCQS Leave a Comment | Umar
A. Assigning local IP addresses B. Routing between autonomous systems on the internet. C. Encrypting user passwords D. Connecting wireless printers
MongoDB belongs to which type of database? A. Relational database B. NoSQL database. C. SQL database D. Flat-file database Correct answer is: B. NoSQL database. 📖 Read Detailed Explanation → Computer Science MCQS Leave a Comment | Umar
What is virtualization in IT? A. Upgrading hardware pieces physically B. Creating virtual versions of hardware resources. C. Increasing network security levels D. Designing 3D computer models Correct answer is: B. Creating virtual versions of hardware resources. 📖 Read Detailed Explanation → Computer Science MCQS Leave a Comment | Umar
A. Upgrading hardware pieces physically B. Creating virtual versions of hardware resources. C. Increasing network security levels D. Designing 3D computer models
Which architecture is used in modern web services with independent components? A. Monolithic Architecture B. Microservices Architecture. C. Client-Server Architecture D. Peer-to-Peer Architecture Correct answer is: B. Microservices Architecture. 📖 Read Detailed Explanation → Computer Science MCQS Leave a Comment | Umar
A. Monolithic Architecture B. Microservices Architecture. C. Client-Server Architecture D. Peer-to-Peer Architecture
What is RAID 5 used for? A. Speeding up internet connections B. Data redundancy and performance. C. Cooling down server rooms D. Scanning for malware Correct answer is: B. Data redundancy and performance. 📖 Read Detailed Explanation → Computer Science MCQS Leave a Comment | Umar
A. Speeding up internet connections B. Data redundancy and performance. C. Cooling down server rooms D. Scanning for malware
What is overfitting in machine learning? A. When a model fails to learn training data B. When a model learns training data too well and fails on new data. C. When the dataset is too small D. When the training takes too long Correct answer is: B. When a model learns training data too well and fails on new data. 📖 Read Detailed Explanation → Computer Science MCQS Leave a Comment | Umar
A. When a model fails to learn training data B. When a model learns training data too well and fails on new data. C. When the dataset is too small D. When the training takes too long
What is Agentic AI? A. AI that only answers questions B. AI that can take actions independently to achieve goals. C. AI used strictly for gaming D. Text-to-speech software Correct answer is: B. AI that can take actions independently to achieve goals. 📖 Read Detailed Explanation → Computer Science MCQS Leave a Comment | Umar
A. AI that only answers questions B. AI that can take actions independently to achieve goals. C. AI used strictly for gaming D. Text-to-speech software
Which protocol secures HTTPS communication? A. FTP B. SMTP C. TLS. D. HTTP Correct answer is: C. TLS. 📖 Read Detailed Explanation → Computer Science MCQS Leave a Comment | Umar
What does blockchain technology provide? A. High-speed internet routing B. Decentralized and immutable digital ledger. C. Centralized cloud storage system D. Automated video editing features Correct answer is: B. Decentralized and immutable digital ledger. 📖 Read Detailed Explanation → Computer MCQs for Competitive Exams Constable Model Past paper 2025 PDF Leave a Comment | Umar
A. High-speed internet routing B. Decentralized and immutable digital ledger. C. Centralized cloud storage system D. Automated video editing features
What is a zero-day vulnerability? A. A bug fixed on the day of software release B. A security flaw unknown to the vendor. C. A virus that expires within 24 hours D. A hardware defect Correct answer is: B. A security flaw unknown to the vendor. 📖 Read Detailed Explanation → Computer MCQs for Competitive Exams Constable Model Past paper 2025 PDF Leave a Comment | Umar
A. A bug fixed on the day of software release B. A security flaw unknown to the vendor. C. A virus that expires within 24 hours D. A hardware defect
What is the difference between cloud computing and edge computing? A. Cloud computing is older; edge is newer B. Cloud processes data on centralized servers; edge processes data near the source. C. Cloud is local; edge is global D. Cloud uses cables; edge is entirely wireless Correct answer is: B. Cloud processes data on centralized servers; edge processes data near the source. 📖 Read Detailed Explanation → Computer MCQs for Competitive Exams Constable Model Past paper 2025 PDF Leave a Comment | Umar
A. Cloud computing is older; edge is newer B. Cloud processes data on centralized servers; edge processes data near the source. C. Cloud is local; edge is global D. Cloud uses cables; edge is entirely wireless
Which principle explains how airplane wings generate lift? A. Archimedes' Principle B. Bernoulli’s Principle. C. Pascal's Law D. Newton's Third Law Correct answer is: B. Bernoulli’s Principle. 📖 Read Detailed Explanation → Constable Model Past paper 2025 PDF Every Day Science Leave a Comment | Umar
What is the main component of biogas? A. Propane B. Butane C. Methane. D. Ethane Correct answer is: C. Methane. 📖 Read Detailed Explanation → Constable Model Past paper 2025 PDF Every Day Science Leave a Comment | Umar
Which isotope is used in carbon dating? A. Carbon-12 B. Carbon-13 C. Carbon-14. D. Carbon-15 Correct answer is: C. Carbon-14. 📖 Read Detailed Explanation → Constable Model Past paper 2025 PDF Every Day Science Leave a Comment | Umar
Which enzymes are known as molecular scissors in genetic engineering? A. Polymerases B. Ligases C. Restriction enzymes. D. Amylases Correct answer is: C. Restriction enzymes. 📖 Read Detailed Explanation → Constable Model Past paper 2025 PDF Every Day Science Leave a Comment | Umar
What is the Albedo Effect? A. Absorption of heat by oceans B. Reflection of solar energy from Earth’s surface. C. Melting of polar ice caps D. Radiation emitted by electronic devices Correct answer is: B. Reflection of solar energy from Earth’s surface. 📖 Read Detailed Explanation → Constable Model Past paper 2025 PDF Every Day Science Leave a Comment | Umar
A. Absorption of heat by oceans B. Reflection of solar energy from Earth’s surface. C. Melting of polar ice caps D. Radiation emitted by electronic devices
Which part of the brain controls decision making and personality? A. Cerebellum B. Prefrontal Cortex. C. Medulla Oblongata D. Occipital Lobe Correct answer is: B. Prefrontal Cortex. 📖 Read Detailed Explanation → Constable Model Past paper 2025 PDF Every Day Science Leave a Comment | Umar
What is the main biological cause of antibiotic resistance? A. Lack of physical exercise B. Genetic mutation and gene transfer. C. Eating expired food D. Vitamin deficiencies Correct answer is: B. Genetic mutation and gene transfer. 📖 Read Detailed Explanation → Constable Model Past paper 2025 PDF Every Day Science Leave a Comment | Umar
A. Lack of physical exercise B. Genetic mutation and gene transfer. C. Eating expired food D. Vitamin deficiencies
Which vitamin is known as Tocopherol? A. Vitamin A B. Vitamin C C. Vitamin D D. Vitamin E. Correct answer is: D. Vitamin E. 📖 Read Detailed Explanation → Constable Model Past paper 2025 PDF Every Day Science Leave a Comment | Umar
Ozone depletion is mainly caused by which chemicals? A. Carbon dioxide B. Chlorofluorocarbons (CFCs). C. Nitrogen gas D. Methane Correct answer is: B. Chlorofluorocarbons (CFCs). 📖 Read Detailed Explanation → Constable Model Past paper 2025 PDF Every Day Science Leave a Comment | Umar
Which layer of the atmosphere is known as the ‘Heat Sphere’? A. Troposphere B. Stratosphere C. Mesosphere D. Thermosphere. Correct answer is: D. Thermosphere. 📖 Read Detailed Explanation → Constable Model Past paper 2025 PDF Every Day Science Leave a Comment | Umar