Computer MCQs for Competitive Exams

To double underline text, select it, then go to Format > Font, and choose Double Underline from the Underline Style options.

In Microsoft Word, the "Ctrl + Left Arrow" shortcut key efficiently moves the cursor one word to the left, aiding quick navigation.

To activate the ruler in Microsoft Word, navigate to the "View" tab on the ribbon and then select the "Ruler" checkbox.

FTP (File Transfer Protocol) is a standard communication protocol used to transfer files between computers over a TCP/IP network, such as the Internet. It allows users to upload files from a local computer to a remote server, download files from a server, and perform file management operations such as renaming, deleting, moving, and creating directories. FTP is commonly used by web developers and website administrators to upload website files to a web hosting server. It operates on a client-server model, where an FTP client connects to an FTP server using valid login credentials or anonymous access if permitted.

FTP typically uses Port 21 for establishing the control connection and Port 20 for transferring data in active mode. Modern FTP clients such as FileZilla and WinSCP provide a graphical interface that makes file transfers simple and efficient. Since standard FTP does not encrypt data, secure alternatives like FTPS (FTP Secure) and SFTP (SSH File Transfer Protocol) are preferred for transferring sensitive information over the Internet.

Why the other options are incorrect:

• File Transfer Post is not a recognized computer networking term or protocol.
• File Transit Protocol is not an official Internet protocol defined by networking standards.
• None of these is incorrect because File Transfer Protocol is the correct and universally accepted expansion of FTP.

The keyboard shortcut Window key + Ctrl + F is used to open the "Find Computers" dialog box, typically for network searches.

A hypervisor is essential software that enables the creation and management of virtual machines, providing a solution for PC virtualization.

A Slide-Title Master pair in Microsoft PowerPoint refers to a set of master slides that control the overall appearance, formatting, and layout of a presentation. Traditionally, PowerPoint used two related master slides: the Slide Master, which controls the design and formatting of standard content slides, and the Title Master, which controls the appearance of title slides. By modifying these master slides, users can apply consistent fonts, colors, backgrounds, placeholders, logos, and formatting across multiple slides without editing each slide individually. This feature saves time and ensures a professional, uniform presentation.

In modern versions of Microsoft PowerPoint, the Slide Master remains the primary design tool, while title slide layouts are generally managed as part of the Slide Master rather than through a separate Title Master. Organizations frequently use master slides to maintain branding by applying company logos, themes, and standard layouts throughout a presentation. Any changes made to the master are automatically reflected on all slides that use the associated layouts, making presentation management more efficient and consistent.

Why the other options are incorrect:

• A single slide containing both title and content describes a normal presentation slide layout, not a Slide-Title Master pair.
• A specific type of slide animation is incorrect because master slides control formatting and layouts, not animation effects.
• None of the above is incorrect because a Slide-Title Master pair is indeed a set of master slides used to control the appearance of presentation slides.

API is an acronym for Application Programming Interface, which defines how software components should interact, enabling communication between different systems.

The speed of a CPU is typically measured in clock cycles per second, commonly expressed in units like megahertz (MHz) or gigahertz (GHz).

PDA (Personal Digital Assistant) is a handheld electronic device designed to help users manage personal and professional tasks. Before the widespread adoption of smartphones, PDAs were commonly used for organizing schedules, maintaining contact lists, taking notes, setting reminders, managing calendars, and performing basic computing tasks. Many PDAs also included features such as calculators, email access, web browsing, and synchronization with desktop computers. They were widely used by business professionals, students, and healthcare workers for their portability and productivity features.

Modern smartphones have largely replaced traditional PDAs by combining all of their functions with additional capabilities such as high-speed Internet access, GPS navigation, digital cameras, multimedia support, and mobile applications. Early examples of PDAs include devices manufactured by Palm, Hewlett-Packard (HP), and other technology companies. Despite becoming obsolete as standalone devices, the concept of the PDA played a significant role in the evolution of today's smartphones and tablets.

Why the other options are incorrect:

• People's Digital Assistant is not the official expansion of PDA.
• Personal Data Assistant is an incorrect variation and is not the standard term used in computer science.
• People's Data Assistant is not a recognized technology term or acronym.

In Microsoft Word, pressing the Enter key is the standard action to terminate the current paragraph and begin a new one.

The Fifth Generation of computers, characterized by artificial intelligence and parallel processing, is currently under active research and development.

Slide Transition is the visual effect that occurs when one slide changes to the next during a Microsoft PowerPoint presentation. These effects enhance the flow of a presentation by controlling how a new slide appears on the screen. PowerPoint offers a variety of transition effects, such as Fade, Push, Wipe, Split, Morph, and Random Bars. Users can also customize the transition by adjusting its duration, adding sound effects, and setting whether the slide advances automatically after a specified time or only when clicked. Appropriate use of slide transitions makes presentations more engaging and professional, while excessive use can distract the audience.

Slide transitions are applied to an entire slide, meaning the effect is seen only when moving from one slide to another. This is different from animations, which control the movement or appearance of individual objects such as text, images, charts, or shapes within a single slide. Transition settings are available under the Transitions tab in Microsoft PowerPoint and can be applied to a single slide or to all slides in the presentation.

Why the other options are incorrect:

• Slide Animation is not the correct term for effects that occur between slides.
• Custom Animation refers to animation effects applied to individual objects within a slide, not to the change between slides.
• Slide Layout determines the arrangement of placeholders and content on a slide and has nothing to do with transition effects.

VLSI (Very Large Scale Integration) is a technology used in electronics to integrate millions or even billions of transistors onto a single integrated circuit (IC) or microchip. It is the foundation of modern digital electronics and enables the development of powerful, compact, and energy-efficient devices. VLSI technology is widely used in the manufacturing of microprocessors, memory chips, digital signal processors, graphics processors, and application-specific integrated circuits (ASICs). The advancement of VLSI has significantly increased computing power while reducing the size, cost, and power consumption of electronic devices.

Before VLSI, integrated circuits were classified into SSI (Small Scale Integration), MSI (Medium Scale Integration), and LSI (Large Scale Integration), depending on the number of components integrated onto a chip. VLSI marked a major breakthrough by allowing extremely complex circuits to be fabricated on a single chip, making modern computers, smartphones, tablets, communication systems, and embedded devices possible. Today, semiconductor manufacturers continue to improve VLSI technology to produce faster, smaller, and more efficient processors.

Why the other options are incorrect:

• Very Large Scale Industry is not the correct expansion of the acronym VLSI.
• Very Low Scale Integration is an incorrect term and does not represent any recognized level of integrated circuit technology.
• Very Large System Integration is not the official expansion used in computer engineering and electronics.

WhatsApp was indeed co-founded in 2009 by former Yahoo employees Brian Acton and Jan Koum, making both individuals correct.

BMP is a standard raster graphics image file format, and its acronym correctly stands for "Bitmap," which represents image data.

PDF, developed by Adobe, is a file format used to present documents reliably, and its acronym correctly means "Portable Document Format."

A MODEM is a hardware device that converts data for transmission over communication lines, correctly standing for "Modulator and Demodulator."

In a word processing environment, a mouse facilitates various actions including single-clicking, double-clicking, and dragging to select or move items.

JPEG stands for Joint Photographic Experts Group, the international committee that developed one of the most widely used standards for digital image compression. The JPEG format was created to reduce the file size of digital photographs while maintaining acceptable image quality, making it ideal for storing and sharing images over the internet.

JPEG uses a lossy compression technique, which means some image data is permanently removed to achieve smaller file sizes. Users can choose different compression levels depending on the balance they want between image quality and storage space. Because of its efficient compression, JPEG is commonly used for photographs, web images, digital cameras, and social media platforms.

Although JPEG is excellent for photographs and colorful images, it is not the best choice for graphics containing sharp lines, text, or logos because repeated editing and saving can reduce image quality. Since the abbreviation is officially derived from the committee that developed the standard, Joint Photographic Experts Group is the correct expansion, making Option C the correct answer.

BASIC (Beginner's All-purpose Symbolic Instruction Code) is a high-level programming language developed in 1964 by John G. Kemeny and Thomas E. Kurtz at Dartmouth College. It was designed to make programming simple and accessible for beginners, students, and non-technical users. At a time when programming languages were complex and mainly used by scientists and engineers, BASIC introduced an easy-to-understand syntax that allowed users to write programs with minimal training. It became one of the most popular programming languages for personal computers during the 1970s and 1980s.

BASIC supports fundamental programming concepts such as variables, arithmetic operations, conditional statements, loops, functions, and input/output operations. Many early home computers, including systems from Apple, Commodore, and IBM, included a BASIC interpreter built into their operating systems, making it one of the first programming languages learned by millions of users. Modern versions, such as Visual Basic and Visual Basic .NET (VB.NET), have expanded the language with graphical user interface (GUI) development, object-oriented programming, and integration with the Microsoft .NET framework.

Why the other options are incorrect:

• Basic All-purpose Standard Instruction Code is not the official expansion of BASIC.
• Beginner's All-purpose System Instruction Code is an incorrect variation and has never been the accepted full form.
• Basic All-purpose Symbolic Input Code is not a recognized expansion of the acronym BASIC.

The correct answer is Ctrl+Shift+6 because this built-in shortcut combination instantly applies the Scientific (exponential) number format to the active cells.

• Ctrl+Shift+6: This is the correct choice. On a standard keyboard layout, the number 6 key houses the caret symbol (^), meaning this command is also represented as Ctrl + Shift + ^. Executing it converts long digits into scientific notation displaying a decimal value followed by an 'E' exponent parameter (e.g., 120,000 becomes 1.20E+05) to easily manage large numerical figures.
• Incorrect Options:
  • Ctrl+Shift+3: This is incorrect. This combination applies the Date format (day, month, and year) to selected cell values.
  • Ctrl+Shift+4: This is incorrect. This shortcut applies the Currency format (using the dollar/local currency symbol with two trailing decimal places).
  • Ctrl+Shift+5: This is incorrect. This command applies the Percentage format with no trailing decimal representation.

PNG (Portable Network Graphics) is a widely used raster image file format developed as an improved, patent-free alternative to the GIF format. Introduced in 1996, PNG supports lossless compression, meaning image quality is preserved even after repeated saving and editing. It is commonly used for logos, icons, screenshots, illustrations, and web graphics because it provides sharp image quality and supports transparent backgrounds through alpha channels. PNG files are compatible with virtually all modern web browsers, image editing software, and operating systems, making them one of the most popular image formats on the Internet.

Unlike JPEG, which uses lossy compression and may reduce image quality, PNG retains every detail of the original image, making it ideal for graphics containing text, diagrams, and line art. However, because PNG files preserve all image data, they are generally larger than JPEG files and are therefore less suitable for storing high-resolution photographs. The format is maintained by the PNG Development Group and has become a standard choice for web designers, developers, and digital artists who require high-quality images with transparency support.

Why the other options are incorrect:

• Portable Network Group is not the correct expansion of the acronym PNG and is not a recognized image format.
• Project Network Graphics is an incorrect variation and has never been the official full form of PNG.
• Plain Network Graphics is not a valid computer graphics term or the accepted expansion of PNG.

Data manipulation by computers is fundamentally known as processing, transforming raw input into meaningful output.