Computer Science

Simplex communication mode allows data to flow in only one direction, similar to television and radio broadcasts where the signal is sent from the source to the receiver without any return path.

When two people work on an online document simultaneously, they are collaborating synchronously, meaning their actions happen at the same time and are reflected in real-time.

A WAN (Wide Area Network) covers a large geographical area such as cities, countries, or even globally, unlike LANs which cover smaller areas like homes or offices. Routers and bridges are networking devices, not types of networks by area.

WAV files are a common type of sound file format used to store audio data. DAT files can be data files but are not specifically sound files, LOG files are typically text files for logging information, and DRV files are driver files related to hardware, not sound.

Flat-panel displays, primarily LCD and LED-backlit LCD, are the standard visual output devices used across virtually all computer categories. They are commonly used as external monitors for personal computers (desktops), integrated into laptops as built-in screens, and also used in terminals or thin-client workstations for mainframe computers. Supercomputers also use flat-panel displays for console and visualization stations. Given the options, 'Personal computer' is the most appropriate answer as flat panels are standard for desktop PCs. While laptops also use flat panels, the question context likely refers to desktop PCs. Supercomputers and mainframes use flat panels but often in specialized setups rather than as the primary display type for the entire system.

A desktop computer typically includes all these components: the CPU (central processing unit), the motherboard, and the hard disk. Therefore, the correct answer is 'All of these'.

MPG is a video file format extension, not a graphic image format. JPEG and GIF are both graphic image file format extensions. Therefore, the correct answer to the question 'Which of the following is a graphic file format extension?' is not 'All of these' but rather the options that are graphic formats. Since JPEG and GIF are graphic formats and MPG is not, the correct answer is either B or C. Given the options, C (GIF) is a valid graphic file format extension. Option D (All of these) is incorrect because MPG is not a graphic format.

A higher Pixels Per Inch (PPI) means more pixels are packed into each inch of the image, resulting in finer detail and higher image quality. Therefore, higher PPI typically indicates better image clarity and sharpness.

Minimizing a program hides its window from the desktop but keeps it accessible on the taskbar, allowing the user to restore it later. Closing a program exits it, and maximizing enlarges the window; neither hides it on the taskbar.

Resolution refers to the sharpness or clarity of an image, indicating how many pixels or dots are used to display the image. Higher resolution means more detail and clearer images.

Full HD, also known as 1080p, commonly has a resolution of 1920x1080 pixels. This is the standard resolution for Full HD displays, whereas the other options correspond to different standards: 3840x2160 is 4K UHD, 7680x4320 is 8K UHD, and 1280x720 is HD (720p).

Rendering is the process of generating a 2D image from a 3D model by calculating lighting, shading, and textures. Animation refers to creating motion, scaling changes size, and vectorization converts raster images to vector format, so rendering is the correct term.

A video game played over a network or online requires a Network card (network interface) to connect to other players or online services. While graphics cards are essential for rendering visuals in video games, they are not specifically used to 'play' the game in the context of network connectivity. Sound cards are for audio output, and modems are older devices for dial-up internet connections, not commonly used for gaming today. Therefore, the correct answer is 'Network' card, as it enables online multiplayer gaming and internet connectivity.

The image displayed on a computer monitor is called a soft copy because it is a digital display that can be changed or erased, unlike a hard copy which is a physical printed output.

CRT stands for Cathode Ray Tube, which is a technology used in older computer monitors and televisions to display images by directing electron beams onto a phosphorescent screen.

Paint programs, especially vector-based or layered ones, keep track of every object placed on the screen. These objects represent elements like shapes, brush strokes, or layers that can be manipulated independently. Raster-based paint programs primarily manage pixels in a pixel buffer but still often track objects such as brush strokes or layers as distinct entities for editing purposes. Pixels themselves are the smallest units of the display and are not individually tracked as separate entities in paint programs. Therefore, the best answer is 'Object'.

The area that contains icons such as My Computer, My Documents, and Recycle Bin is called the Desktop. It is the primary screen area that users interact with in a Windows operating system environment.

Removing the unwanted part of an image is called cropping, which involves trimming the edges or parts of the image to focus on the desired area.

PDF stands for Portable Document Format, which is a file format developed by Adobe to present documents independently of software, hardware, or operating systems.

WinZip is a well-known file compression program that reduces the size of large files by compressing them into smaller archives, making option A the correct answer.

Raster graphics are made up of pixels, which are tiny dots of color that together form an image. Vector graphics, in contrast, are made up of paths defined by mathematical formulas and are not pixel-based.

Animation refers to the process of updating images in sequence to create the illusion of movement. Therefore, 'Updating images' best describes animation among the given options.

AGP (Accelerated Graphics Port) is a high-speed point-to-point channel designed specifically for attaching a graphics card to a computer's motherboard to accelerate 3D graphics. It was introduced by Intel in 1997 and provides a dedicated connection that allows faster data transfer than PCI. NVIDIA is a well-known manufacturer of graphics cards that used AGP technology, but AGP itself is a standard interface, not specific to NVIDIA. The correct term to fill the blank is 'AGP' which stands for Accelerated Graphics Port, making option C the best choice despite the inclusion of 'NVIDIA' which is not part of the standard name.

Vector graphics are defined by mathematical equations that describe shapes, lines, and curves, allowing them to be scaled without loss of quality. This contrasts with raster graphics, which are defined by pixels.

The Action Button in presentation software like PowerPoint is used to link to different slides, files, websites, or play sounds, enabling interactive navigation within a presentation.