Computer MCQs for Competitive Exams
600 computer mcq pdf. Computer Most Repeated MCQs PDF For Fpsc, Ppsc, Pms, CSS, Spsc, Bpsc, All Others Exams. . Computer MCQs solved questions with answers in PDF.
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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.
Explanation:
The correct answer is Cloud processes data on centralized servers; edge processes data near the source. because it accurately reflects the architectural differences in data processing locations.
- Step 1 (Centralized Architecture): Cloud computing relies on massive, geographically centralized data centers to process, store, and manage global consumer data over the internet.
- Step 2 (Decentralized Local Architecture): Edge computing brings computation and storage directly to local hardware nodes or IoT devices, processing data immediately where it is gathered to reduce latency.
- Incorrect Options:
- Cloud computing is older; edge is newer is incorrect because age is an arbitrary timeline detail rather than the core architectural distinction between them.
- Cloud is local; edge is global is incorrect because it reverses reality; cloud resources span global networks while edge environments focus on local proximity.
- Cloud uses cables; edge is entirely wireless is incorrect because both frameworks utilize combinations of fiber optic wiring and wireless communication layers.
Computer MCQs for Competitive Exams Constable Model Past paper 2025 PDF
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.
Explanation:
The correct answer is A security flaw unknown to the vendor. because the term signifies that the developer or vendor has had zero days to create a security patch for the issue.
- Step 1 (Definition): A zero-day vulnerability is an unpatched software flaw that is completely unknown to the party responsible for fixing it, often discovered by attackers first.
- Step 2 (Exploitation): Because the vendor is unaware of the defect, no official defense or patch exists, making systems highly susceptible to targeted zero-day exploits.
- Incorrect Options:
- A bug fixed on the day of software release is incorrect because bugs patched at launch are known and resolved, not exposed security flaws.
- A virus that expires within 24 hours is incorrect because malware lifetime is not restricted by a mandatory 24-hour self-destruction timer.
- A hardware defect is incorrect because zero-day vulnerabilities primarily refer to flaws discovered within software code and system logic.
Computer MCQs for Competitive Exams Constable Model Past paper 2025 PDF
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.
Explanation:
The correct answer is Decentralized and immutable digital ledger. because it records transactions sequentially across a peer-to-peer network without relying on a central authority.
- Step 1 (Decentralization): Data is stored across a distributed network of computers (nodes) rather than a single centralized server, ensuring no single entity has total control.
- Step 2 (Immutability): Once a block of data is cryptographically linked to the chain, modifying it requires altering all subsequent blocks, making the records practically unchangeable.
- Incorrect Options:
- High-speed internet routing is incorrect because network routing protocols handle internet traffic speeds, which is entirely separate from cryptographic ledgers.
- Centralized cloud storage system is incorrect because blockchain is inherently decentralized, which is the direct opposite of a centralized framework.
- Automated video editing features is incorrect because media rendering software operates on completely different algorithms unrelated to ledger distribution.
Computer MCQs for Competitive Exams Constable Model Past paper 2025 PDF
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.
Explanation:
The correct answer is Fraudulent messages used to steal personal information. because phishing relies on digital deception to manipulate targets into giving up data voluntarily.
- Step 1 (Deceptive Tactics): Attackers distribute fraudulent emails, text messages, or spoofed web links disguised as communications from legitimate organizations like banks, utilities, or employers.
- Step 2 (Credential Harvesting): The goal is to trick users into revealing confidential information, such as login credentials, credit card details, or social security numbers, which are then exploited for identity theft or unauthorized access.
- Incorrect Options:
- Upgrading computer operating systems is incorrect because OS upgrades are regular administrative software maintenance routines.
- Backing up network data safely is incorrect because data backup is a defensive cybersecurity protocol used to preserve files against unexpected loss.
- Sorting files into folders is incorrect because arranging items inside folders is an everyday digital storage organization task.
Computer MCQs for Competitive Exams Constable Model Past paper 2025 PDF
A.
Mass memory
B.
Internal memory
C.
PROM
D.
None
Correct answer is:
B. Internal memory
Explanation:
The correct answer is Internal memory because it serves as the primary workspace where the CPU temporarily stores data and instructions currently in use.
Active Processing Hub: Internal memory, primarily manifested as Random Access Memory (RAM), features ultra-fast read and write speeds that allow the processor to access active software instructions and open data sets instantly without system lag.
Volatile State: Unlike long-term storage architectures, this processing workspace is volatile, meaning its data is completely cleared the moment the computer is powered down or restarted.
Incorrect Options:
Mass memory is incorrect because it designates non-volatile secondary storage systems like hard drives (HDDs) or solid-state drives (SSDs) designed for archival data retention rather than live processing.
PROM is incorrect because Programmable Read-Only Memory is a permanent firmware chip used to store low-level boot instructions (BIOS) that cannot be dynamically rewritten during routine application processing.
None is invalid since internal memory precisely satisfies the architectural definition of live, active processing memory within a computing system.
Computer MCQs for Competitive Exams PPSC ESE GENERAL PAST PAPER 2026
A.
URL
B.
Domain
C.
Protocol
D.
Directory
Correct answer is:
A. URL
Explanation:
The correct answer is URL because it stands for Uniform Resource Locator, which is the official technical term for a web page address.
Unique Resource Locator: Every individual webpage published on the World Wide Web possesses a unique URL that web browsers use to find, request, and display its specific contents.
Anatomical Makeup: A complete URL string acts as a comprehensive map, bundling multiple structural components together—including the access protocol, the root host domain, and the file path.
Incorrect Options:
Domain is incorrect because it represents the broader, overarching name of the entire website host rather than the address of a single specific webpage.
Protocol is incorrect because it designates the foundational communication language rules (like HTTP or HTTPS) used to securely transmit the data across networks.
Directory is incorrect because it refers to the internal folder pathways stashed on the remote web server where the file is physically organized.
Computer MCQs for Competitive Exams PPSC ESE GENERAL PAST PAPER 2026
A.
Central Processing Unit
B.
Computer Personal Unit
C.
Central Program Unit
D.
Core Processing Unit
Correct answer is:
A. Central Processing Unit
Explanation:
The correct answer is Central Processing Unit because it is the primary component of a computer that acts as its 'brain,' executing instructions and processing data.
- Central Processing Unit: This is the accurate, universally accepted definition of CPU. It handles all basic arithmetic, logical, control, and input/output operations specified by the instructions.
- Incorrect Options:
- Computer Personal Unit: This is a fabricated term; personal computers are called PCs.
- Central Program Unit: This is incorrect because the unit processes instructions rather than acting as a program itself.
- Core Processing Unit: While a CPU contains 'cores', the complete abbreviation stands for Central Processing Unit.
Computer MCQs for Competitive Exams FPSC VICE PRINCIPAL MOCK TEST 1 FOR FPSC EXAMS
A.
Emotion
B.
Speed
C.
Accuracy
D.
Diligence
Correct answer is:
A. Emotion
Explanation:
The correct answer is Emotion because computers are machines that lack human feelings, empathy, and emotional intelligence.
- Emotion: This is NOT a characteristic of a computer. Computers operate strictly based on programmed instructions and data, meaning they cannot feel, sympathize, or make emotionally driven decisions.
- Incorrect Options (Valid Computer Characteristics):
- Speed: This is a core characteristic. Computers can process millions of instructions per second, making calculations exponentially faster than human capabilities.
- Accuracy: This is a core characteristic. Computers perform calculations with high precision and do not make mistakes unless there is an error in the input data or programming.
- Diligence: This is a core characteristic. Computers are free from monotony, tiredness, and lack of concentration, allowing them to work continuously for hours without errors.
Computer MCQs for Competitive Exams FPSC VICE PRINCIPAL MOCK TEST 1 FOR FPSC EXAMS
A.
Search Engine
B.
Social Network
C.
Email Service
D.
Web Browser
Correct answer is:
A. Search Engine
Explanation:
The correct answer is Search Engine because Google's primary and foundational service is to index the World Wide Web, allowing users to look up and retrieve information from internet content.
- Search Engine: This is the correct classification. Google uses complex web crawlers and algorithms to organize information and provide relevant web results based on user queries.
- Incorrect Options:
- Social Network: Google is not a social network (services like Facebook or Instagram fit this category, whereas Google's own attempt, Google+, was shut down).
- Email Service: While Google offers an email service (Gmail), Google itself as a core entity is classified as a search engine.
- Web Browser: Google develops a web browser (Google Chrome), but the core company and its primary function started and remains classified as a search engine.
Computer MCQs for Competitive Exams FPSC VICE PRINCIPAL MOCK TEST 1 FOR FPSC EXAMS
A.
HTML
B.
Excel
C.
Word
D.
PowerPoint
Correct answer is:
A. HTML
Explanation:
The correct answer is HTML because HyperText Markup Language is the standard foundational markup language used to create and structure content on the World Wide Web.
- HTML: This is the correct choice. It provides the essential structure of web pages, defining elements like headings, paragraphs, links, and images so web browsers can display them properly.
- Incorrect Options:
- Excel: This is a spreadsheet application developed by Microsoft, used for data analysis, calculations, and graphing, not for web design.
- Word: This is a word processing software used to create text documents, articles, and reports.
- PowerPoint: This is a presentation program used to design visual slide decks for meetings, lectures, and pitches.
Computer MCQs for Competitive Exams FPSC VICE PRINCIPAL MOCK TEST 1 FOR FPSC EXAMS
A.
Central Processing Unit
B.
Computer Personal Unit
C.
Central Program Unit
D.
Core Processing Unit
Correct answer is:
A. Central Processing Unit
Explanation:
The correct answer is Central Processing Unit because it is the standard, globally recognized hardware term for a computer's primary processor.
The System Brain: The Central Processing Unit is responsible for executing instructions, performing basic arithmetic, managing data movement, and controlling logical operations across the computer.
Core Components: Within the CPU structure, specialized sub-units—such as the Arithmetic Logic Unit (ALU) and the Control Unit (CU)—work together to fetch, decode, and execute program code.
Incorrect Options:
Computer Personal Unit is incorrect because it is a fabricated phrase that holds no functional definition within computer engineering or hardware manuals.
Central Program Unit is incorrect because it mistakenly substitutes 'Program' for 'Processing,' misrepresenting the physical hardware component as a software entity.
Core Processing Unit is incorrect because while modern CPUs feature multiple computational 'cores,' the overarching hardware classification remains 'Central' Processing Unit.
Computer MCQs for Competitive Exams FPSC VICE PRINCIPAL MOCK TEST 1 FOR FPSC EXAMS