Computer MCQs for Competitive Exams

The correct answer is Ctrl+Shift+5 because this exact key combination applies the percentage formatting rule directly to selected values in Microsoft Excel.

• Step 1 (Formatting Action): When a number is input into a cell and you strike Ctrl+Shift+5, the software multiplies the numerical value by 100 and appends the standard percentage sign (%) at the end without decimals.


• Step 2 (Mnemonic Association): A quick way to memorize this shortcut is by noting that the number 5 key on standard keyboard configurations houses the physical percentage symbol (%) directly above it as a shifted character.


• Incorrect Options:
  
  
  
  • Ctrl+Shift+6 applies exponential scientific tracking notation to the active numeric field.
  
  
  • Ctrl+Shift+3 formats the numbers into a standardized Day-Month-Year calendar layout.
  
  
  • Ctrl+1 is incorrect because it opens the comprehensive 'Format Cells' properties dialog box instead of instantly applying a percentage shortcut.
  
  

The correct answer is Digital Subscriber Line because it represents the authentic technical term for this high-speed broadband internet infrastructure technology.

• Step 1 (Definition): Digital Subscriber Line technology transmits high-bandwidth digital data over traditional copper telephone lines already installed in homes and offices.


• Step 2 (Frequency Splitting): By utilizing high-frequency bands that sit completely above the frequencies used for standard voice calls, it allows continuous internet connectivity without interrupting phone line availability.


• Incorrect Options:
  
  
  
  • Disc Super Line, Digital Super Line, and Disc Subscriber Line are incorrect phrases that mischaracterize the data-handling nature of standard telecom local loops.
  
  

The correct answer is Lock Desktop because the Windows logo key combined with 'L' is the standard administrative safety shortcut used to secure your workspace environment.

• Step 1 (Security Trigger): Pressing the Windows Key + L (where 'L' serves as a mnemonic for 'Lock') instantly locks the active operating system profile, hiding current application windows and taking the user back to the login credential screen.


• Step 2 (Data Safety): This allows professionals to immediately secure their system data before walking away from their workstation without shutting down running applications.


• Incorrect Options:
  
  
  
  • Windows Explorer is incorrect because opening file directories is bound to the Windows Key + E shortcut.
  
  
  • Help is incorrect because invoking support documentation is managed through the standalone F1 key function layer.
  
  
  • Show Desktop is incorrect because minimizing open applications to display the desktop canvas relies on the Windows Key + D combination.
  
  

The correct answer is A method of moving items on a slide because a motion path is a specialized PowerPoint animation that dictates the precise route or trajectory an object travels across a slide.

• A method of moving items on a slide: This is the correct choice. Your original parameters had a truncated text string ('A method'). Unlike fixed entrance or exit transitions, a motion path enables text, shapes, or images to move along custom-drawn trajectories, lines, loops, arcs, or spirals within the canvas boundary to dynamically emphasize content.


• Incorrect Options:
  
  
  
  • A type of animation entrance effect: This is incorrect. Entrance effects (such as Fade, Fly In, or Zoom) introduce an object onto a slide from a hidden state, whereas a motion path moves an already visible object across the layout.
  
  
  • A method of advancing slides: This is incorrect. Progressing from one slide to the subsequent page is handled exclusively by slide transitions and slide timing triggers.
  
  

The correct answer is Function because the keys labeled F1 through F12 are designated as function keys assigned to trigger specialized software control tasks.

• Step 1 (Purpose): Rather than typing text characters, these keys act as quick input actions. Their behavior can change depending on which operating system or program is currently active.


• Step 2 (Application Examples): For instance, pressing F1 universally invokes built-in help systems, while pressing F5 within a web browser environment triggers a page reload execution loop.


• Incorrect Options:
  
  
  
  • Enter keys are primary navigation buttons used to confirm operations or create new paragraph breaks.
  
  
  • Lock keys represent toggle parameters like Caps Lock, Num Lock, or Scroll Lock.
  
  
  • Insert keys refer to commands that toggle between character insertion and overwrite typing modes.
  
  

The correct answer is Format because in classic, menu-bar driven versions of Microsoft Word, all configurations regarding text style properties are located under the Format category.

• Step 1 (Interface Design): Clicking on the 'Format' drop-down list reveals access pathways to the central Font dialog frame.


• Step 2 (Typographic Tuning): Inside this panel, users adjust tracking parameters, swap font face families, change styles (like bold or italic styles), and configure point scale values for text selections.


• Incorrect Options:
  
  
  
  • View is incorrect because the View menu handles zooming scales, gridline visibilities, and full-screen document display settings.
  
  
  • Tools is incorrect because it contains office productivity mechanisms like spelling dictionaries, word counters, and macro scripts.
  
  
  • Data is incorrect because it is an analytical menu layer reserved primarily for database or spreadsheet management systems like Excel.
  
  

The correct answer is Open Print Dialog box because the Ctrl+P shortcut is the universal hotkey command used to open document output distribution settings.

• Step 1 (Operational Command): Striking Ctrl and P concurrently instructs Microsoft Word to open the print configuration environment.


• Step 2 (Print Configuration): This window or pane allows editors to select destination hardware printers, isolate explicit target page ranges, and tweak document scaling preferences before printing physical pages.


• Incorrect Options:
  
  
  
  • Open files uses the Ctrl+O shortcut.
  
  
  • Open Page does not correspond to a specific internal layout routing tool within Word.
  
  
  • Open Save Dialog Box is executed through either the Ctrl+S key combination or the separate F12 function key.
  
  

The correct answer is Page because it completes the specific text-bank definition placeholder layout matching 'Page Orientation' rules.

• Step 1 (Orientation Concept): Portrait and Landscape represent the two primary directional layout vectors for documents. Portrait displays text vertically (taller than it is wide), while Landscape stretches content horizontally (wider than it is tall).


• Step 2 (Context Clarification): While they are often managed under broader Page Layout configurations in modern ribbon menus, traditional computer science question frameworks identify these choices explicitly as attributes belonging to the Page configuration settings (short for Page Orientation).


• Incorrect Options:
  
  
  
  • Paper Size is incorrect because paper size refers to physical measurements like Letter, A4, or Legal, which remain independent of your rotation choices.
  
  
  • Page Layout is incorrect because it describes an entire group of settings (including margins and breaks) rather than completing this particular structural definition text block.
  
  

The correct answer is All of the because legacy versions of Microsoft Office provided multiple integrated, layered help tools to support users dynamically.

• Step 1 (The Help Menu): The standard Help menu located in the top menu bar serves as the primary repository for searching documentation, scanning offline glossaries, and indexing help topics.


• Step 2 (Contextual Tools): The What is this? feature allows users to click a question-mark icon and then click on a specific interface button or option to reveal a helpful tooltip definition. The Office Assistant (such as Clippy) provides automated, interactive tips based on current tasks. Combining these features makes all the options valid parts of the suite's help infrastructure.


• Incorrect Options:
  
  
  
  • Help menu is incorrect on its own because it overlooks the contextual definition and assistant-driven tools.
  
  
  • What is this? is incorrect on its own because it only covers tooltips rather than the core documentation database.
  
  
  • Office is incorrect on its own because it highlights the assistant agent while ignoring the primary menu bars.
  
  

The correct answer is To quickly because it completes the functional definition string 'To quickly jump to a specific location in the document' within standard text-bank keys.

• Step 1 (Core Purpose): A bookmark inside Microsoft Word assigns a unique, named metadata label to a specific block of text or cursor position on a page.


• Step 2 (Navigation Benefit): Instead of scrolling manually through hundreds of pages to locate a particular chart, section, or chapter, users can launch the 'Go To' menu or click a hyperlink tied to that bookmark to instantly snap the view straight to that coordinate.


• Incorrect Options:
  
  
  
  • To mark the ending of a paragraph of document is incorrect because defining paragraph endings is handled by hidden system carriage return codes (¶), not user bookmarks.
  
  
  • To add anchors in web page is incorrect because HTML anchors are explicit web-markup structures used for browser navigation rather than native internal document tools.
  
  
  • To add hyperlinks in webpage is incorrect because adding external links uses uniform resource locators (URLs) rather than managing structural landmarks within a word processing canvas.
  
  

The correct answer is Mouse because a computer mouse is the standard hardware input tool used to control a visual pointer across a graphic user interface canvas.

• Step 2 (UI Interaction): By physically moving the device across a flat surface, user hand motions translate directly into 2D coordinate shifts ($X$ and $Y$ axes) for an on-screen cursor. This enables fluid actions like pointing at buttons, selecting text, and drawing vector lines in graphic programs.


• Incorrect Options:
  
  
  
  • Scanner is incorrect because a scanner is an optical input peripheral engineered to capture flat physical images or printed text documents and convert them into digital raster graphics.
  
  
  • Printer is incorrect because it is an output device that renders digital layout data onto physical paper media.
  
  
  • CD-ROM is incorrect because it is an optical storage disc player used strictly to read digital data tracks, entirely separate from user interface inputs.
  
  

The correct answer is speech recognition because speech recognition software functions as an essential assistive technology that translates spoken words into digital text and system commands.

• Step 1 (Accessibility Mechanics): For users with severe motor impairments or physical disabilities that prevent them from operating a standard keyboard and mouse, speech recognition engines provide a hands-free interface layer.


• Step 2 (Application): The software analyzes audio signals from a microphone, maps them against linguistic models, and executes corresponding tasks—such as opening files, typing paragraphs, or navigating web browsers entirely via voice.


• Incorrect Options:
  
  
  
  • video conferencing is incorrect because it is a communication application used to host live online video meetings, requiring manual interaction to set up and manage controls.
  
  
  • audio digitizer is incorrect because it refers to the background physical hardware or low-level driver that converts analog sound waves into binary data streams, rather than an interactive user-facing application interface.
  
  
  • synthesizer is incorrect because a text-to-speech synthesizer performs the exact opposite action—converting digital text into artificial spoken audio—making it an accessibility tool for visually impaired users rather than those with motor limitations.
  
  

The correct answer is Assembler because it translates assembly language instructions into machine language code that can be executed directly by the computer's processor.

• Assembly Language: It uses human-readable mnemonics such as MOV, ADD, and SUB instead of binary code.


• Role of an Assembler: An assembler converts these mnemonics into their corresponding machine-language instructions.


• Why Assembler is Correct: It is specifically designed to translate assembly language programs into machine code.


• Why Other Options Are Incorrect:
  
  
  
  • Compiler translates high-level programming languages into machine code or intermediate code.
  
  
  • Interpreter executes high-level language statements one by one without producing a separate machine-code file.
  
  
  • Debugger is used to find and fix errors in programs; it does not perform translation.
  
  

The correct answer is I Love You because the ILOVEYOU worm (often categorized broadly as a virus in historic literacy exams) infected over 10 million Windows personal computers within days of its launch in May 2000.

• Step 1 (Historical Impact): Originating in the Philippines, the malware spread through an email with the subject line 'ILOVEYOU' containing a malicious attachment disguised as a harmless text file (LOVE-LETTER-FOR-YOU.TXT.vbs).


• Step 2 (Widespread Damage): Once executed, it automatically forwarded itself to every contact in the user's Microsoft Outlook address book, resulting in estimated global damages of up to billion and shutting down government and corporate email servers worldwide.


• Incorrect Options:
  
  
  
  • Nimda is incorrect because while Nimda was a highly aggressive and complex multi-vector worm launched in 2001, it did not surpass the historic sheer footprint or cultural saturation of the ILOVEYOU campaign.
  
  
  • Melissa is incorrect because Melissa was an earlier macro-based email virus launched in 1999 that laid the groundwork for future mass-mailers but infected significantly fewer total machines.
  
  
  • Conficker is incorrect because Conficker was a sophisticated 2008 network botnet worm that targeted specific unpatched operating system vulnerabilities rather than achieving the record-breaking social engineering explosion seen in 2000.
  
  

The correct answer is Shift+F3 because this keyboard shortcut is used in Microsoft Word to quickly change the capitalization of selected text.

• Function: Pressing Shift+F3 cycles the selected text through different case formats, such as lowercase, UPPERCASE, and Capitalize Each Word.


• Usage: First select the text, then press Shift+F3 repeatedly until the desired case format appears.


• Why Shift+F3 is Correct: It is the standard shortcut provided by Microsoft Word for the Change Case feature.


• Why Other Options Are Incorrect:
  
  
  
  • Ctrl+Shift+F3 is used for creating AutoText entries in some versions of Word and is not the Change Case shortcut.
  
  
  • Ctrl+F5 does not perform case conversion in Microsoft Word.
  
  
  • Ctrl+Alt is an incomplete key combination and does not execute the Change Case command.
  
  

The correct answer is Numbers because computers fundamentally operate using numerical data in binary form.

• Binary System: At the hardware level, all data is represented using binary digits (0 and 1), which are numerical values.


• Data Processing: Whether it is text, images, audio, or video, everything is ultimately converted into numeric (binary) form for processing.


• Why Numbers is Correct: Computers perform all operations using numeric representations, making numbers the core unit of processing.


• Why Other Options Are Incorrect:
  
  
  
  • Multimedia is a type of content, not the fundamental processing unit.
  
  
  • Word refers to text units, not the underlying data format.
  
  
  • Characters are encoded into numbers (ASCII/Unicode) before processing.
  
  

The correct answer is none of these because the precise technical term for a device that connects to a network without physical cables is wireless.

• Step 1 (Technical Definition): Hardware elements that link over the air use radio frequency bands or infrared beams (such as Wi-Fi, Bluetooth, or cellular links) to transmit data packets. This infrastructure classification is universally called 'wireless' or 'unwired.'


• Step 2 (Verification): Since none of the first three options provide the correct technical term, 'none of these' is the only logical choice.


• Incorrect Options:
  
  
  
  • Distributed is incorrect because distributed computing describes an architectural model where computing tasks are split across independent network nodes.
  
  
  • free is incorrect because free refers to financial cost metrics or unallocated resources rather than physical connectivity mechanics.
  
  
  • centralized is incorrect because a centralized network routes all traffic through a single, master core server hub, which can be done over both wired and wireless lines.