Computer Maintenance MCQ Questions And Answers

The system bus for a 386DX processor is 32 bits. This means that the processor can transfer 32 bits of data between the CPU and other components in the computer simultaneously. The 386DX processor was a popular CPU in the 1980s and early 1990s and had a 32-bit architecture, allowing for efficient data processing and memory addressing.

A serial port is a type of port that communicates information to a peripheral device one bit at a time. Unlike parallel ports, which transmit multiple bits simultaneously, serial ports transmit data sequentially, sending one bit after another. This type of communication is commonly used for devices that require a slower data transfer rate or have limited bandwidth. Serial ports are often found on older computers and are used for connecting devices such as modems, mice, and serial printers.

The printer is an example of an output hardware because it takes digital information from a computer and produces a physical copy of it on paper. Unlike the keyboard, scanner, and microphone, which are input devices, the printer does not receive information but instead provides a tangible output.

The hard disk is the storage device that stores or keeps the operating system and application programs. It is a non-volatile storage device that provides long-term storage for data and files. Unlike other options like the flash disk, diskette, or CD ROM, the hard disk has a larger storage capacity and is commonly used to store the operating system and various software applications.

The data bus for a 486DX4 processor is 32 bits. This means that the processor can transfer 32 bits of data between the CPU and memory or other devices in a single cycle.

The conventional memory in a PC is typically 640K. This is the maximum amount of memory that can be directly accessed by the operating system and applications in the early days of personal computers. It was a limitation imposed by the 16-bit architecture of the original IBM PC and MS-DOS operating system. This memory was used for storing the operating system, device drivers, and other essential software components. However, with the advancement of technology, PCs now have much larger memory capacities.

The processor is the component of the computer that performs calculations, executes instructions, and processes data. It is often referred to as the "brain" of the computer as it carries out all the necessary operations to run programs and perform tasks. The RAM and storage devices are responsible for storing and retrieving data, while the monitor is the output device that displays the processed information. However, it is the processor that actually performs the data processing tasks, making it the correct answer.

The printer is the computer peripheral that produces the hard copy of a soft copy. It takes the digital information from the computer and prints it onto paper or other physical media. Scanners, CD ROMs, and tape drives are not involved in producing hard copies, as they are used for inputting or storing digital information.

 The projector is a component that performs the function of the monitor. It is capable of displaying images and videos on a large screen or surface, similar to how a monitor displays content on a smaller scale. It can be connected to various devices, including laptops, to project its content onto a larger display for presentations, movies, or other visual purposes.

The real-time clock uses IRQ 8.

Drive C: is used to represent the hard disk in Windows because historically, the first hard disk partition in IBM-compatible computers was assigned the letter C. This convention has been followed since then, and Drive C: has become the default letter for the primary hard disk in Windows operating systems.

The standard IDE drive cable typically contains 40 wires.

A serial data port on a PC typically has 9 pinouts.

The Desktop is the first part of Windows that displays when the computer finishes booting because it is the graphical user interface (GUI) that allows users to interact with the computer. It provides a visual representation of the computer's file system and allows users to access and organize their files and applications. The Desktop typically includes icons, shortcuts, and a taskbar, providing users with a central location to launch programs and navigate the operating system.

The maximum length for a parallel cable is typically 15 ft. This length is determined by the limitations of the technology used in parallel cables, which can result in signal degradation and interference over longer distances. Therefore, it is recommended to keep the length within 15 ft to ensure optimal performance and minimize any potential issues.

The palmtop is the correct answer because it is a small handheld device that is designed to be easily carried in one's palm. It typically has a touchscreen display, allowing users to interact with the device by directly touching the screen with their fingers or a stylus. In contrast, laptops, minicomputers, and desktop computers usually do not have touchscreen technology and rely on other input methods such as keyboards and mice.

MS DOS does not require the use of a mouse because it is a command-line operating system that relies on text-based commands for navigation and execution of tasks. Unlike graphical user interfaces (GUI) like Windows Vista, Windows Linux, and Windows ME, which are designed to be used with a mouse, MS DOS primarily relies on keyboard input for interacting with the system.

The RAM is considered a primary storage device because it is used to store data that the computer is actively using. It provides fast and temporary storage for the computer's operating system, applications, and data that are currently being processed. Unlike secondary storage devices like CD ROMs, floppy diskettes, and hard disks, which are used for long-term storage, the RAM allows for quick access and retrieval of data, making it an essential component of a computer's primary memory.

 MS-DOS does not require the use of a mouse because it is a command-line operating system that relies on text-based commands for navigation and execution of tasks. Unlike graphical user interfaces (GUI) like Windows Vista, Windows Linux, and Windows ME, which are designed to be used with a mouse, MS-DOS primarily relies on keyboard input for interacting with the system.

The mainframe computer does not fall under a model type of computer because it is a type of computer that is designed to handle large-scale and complex computing tasks. It is typically used by large organizations and institutions for data processing and storage. In contrast, the desktop and laptop computers are both model types of computers that are designed for personal use and can be easily transported.

9-bit SIMMs have 30 pins.

Microsoft Access is an application program because it is a database management system that allows users to create and manage databases. It is specifically designed for creating and manipulating databases, making it an application program rather than an operating system or file management tool like Windows Explorer or Microsoft DOS.

The largest computer in terms of physical size is typically D. The supercomputer. Supercomputers are high-level computers used for complex computations and data processing. They are often massive in size, taking up entire rooms or even buildings. So, the answer is D. The supercomputer. However, it’s worth noting that the size of a computer doesn’t necessarily correlate with its processing power or performance. Modern technology has made it possible to have very powerful microcomputers as well.

The scanner produces a soft copy of a hard copy by converting physical documents or images into digital files. It uses optical sensors to capture the content and then transfers it to a computer, where it can be stored, edited, or shared electronically. Unlike printers, which produce hard copies of digital files, scanners perform the opposite function by creating digital copies of physical documents. CD ROMs and tape drives are storage devices and do not directly produce soft copies of hard copies.

System BIOS stands for Basic Input/Output System, which is a type of firmware that is embedded in a computer's motherboard. It is responsible for initializing the hardware components of the computer and providing a basic set of instructions for the operating system to boot up. Unlike software, which can be easily modified or updated, firmware is stored in non-volatile memory and is not typically changed unless there is a specific need for it. Therefore, System BIOS can be considered a type of software that is often referred to as firmware.

The correct answer is +5V -5V +12V -12V +5V, -5V ,-12V ,+12V. This answer lists the four types of DC voltage usually produced by a power supply, which are +5V, -5V, +12V, and -12V.

The computer keyboard is divided into four to five sections based on its features.

The taskbar is the bar in Windows that displays open windows. It is located at the bottom of the screen and shows icons for all the currently running programs and applications. Users can easily switch between open windows by clicking on their respective icons on the taskbar. Additionally, the taskbar also displays the Start button, system tray, and other notification icons.

Drive A: is used to represent the floppy drive in Windows. This is because historically, floppy drives were assigned the letter A by default. The letter A was chosen as it was the first available letter after the letters assigned to the hard drives (typically C and D). Therefore, Drive A: became the standard designation for the floppy drive in Windows operating systems.

The storage device that is typically connected to the USB port is C. The flash disk. Flash disks, also known as USB flash drives, are portable storage devices that can be plugged into a computer’s USB port. So, the answer is C. The flash disk. They are a convenient way to carry data and transfer it between computers.

The last bar or part of a window is called the status bar. The status bar is located at the bottom of a window and provides information about the current status or state of the application or system. It may display details such as the current time, network connectivity, battery level, or any other relevant information. The toolbar, taskbar, and menu bar are other components of a window, but they are not specifically referred to as the last bar or part of a window.