Quiz: Top 100 Computer MCQ's

Explanation: Supercomputers were introduced in the 1960s, and for several decades the fastest were made by at Control Data Corporation (CDC) A supercomputer is a computer with a high level of performance compared to a general-purpose computer. Performance of a supercomputer is measured in floating-point operations per second (FLOPS) instead of million instructions per second (MIPS)

Explanation: Linux is free and open source software it is not sold by Microsoft or any other company.

Explanation: The most commonly used floppy disks are 3.5 inches and have the capacity of 800 KB to 2.8 MB (with a standard of 1.44 MB). The high-density floppy disk drive was first introduced in 1995.

Explanation: Transistors replaced vacuum tubes and ushered in the second generation of computers. The transistor was invented in 1947 but did not see widespread use in computers until the late 1950s. The transistor was far superior to the vacuum tube, allowing computers to become smaller, faster, cheaper, more energy-efficient and more reliable than their first-generation predecessors. Though the transistor still generated a great deal of heat that subjected the computer to damage, it was a vast improvement over the vacuum tube. Second-generation computers still relied on punched cards for input and printouts for output. Second-generation computers moved from cryptic binary machine language to symbolic, or assembly, languages, which allowed programmers to specify instructions in words. High-level programming languages were also being developed at this time, such as early versions of COBOL and FORTRAN.

Explanation: A memory cache, sometimes called a cache store or RAM cache, is a portion of memory made of high-speed static RAM (SRAM) instead of the slower and cheaper dynamic RAM (DRAM) used for main memory. Memory caching is effective because most programs access the same data or instructions over and over.

Explanation: : The cathode ray tube (CRT) is a vacuum tube that contains one or more electron guns and a phosphorescent screen, and is used to display images. It modulates, accelerates, and deflects electron beam(s) onto the screen to create the images. : A liquid-crystal display (LCD) is a flat-panel display or other electronically modulated optical device that uses the light-modulating properties of liquid crystals. Liquid crystals do not emit light directly, instead using a backlight or reflector to produce images in color or monochrome.

Explanation: The correct answer is . Let's break down why: * This is the core software that manages all the hardware and other software on a computer (like Windows, macOS, or Linux). Microsoft Word needs an operating system to run, so it *isn't* the operating system itself. * This is a physical component like the CPU (Central Processing Unit) that performs calculations and instructions. Microsoft Word is not a physical device. * This is software designed to perform a specific task for the user. , making it application software. * This is a hardware device that sends information to the computer (like a keyboard or mouse). Microsoft Word is not a physical device that you use to input data in that way. * This is software that helps run the computer hardware and operating system, for example, device drivers. While Word relies on system software, it itself is designed for user tasks. Therefore, because , it falls into the category of application software.

Explanation: A or latch is a circuit that has two stable states and can be used to store state information as Memory devices.

Explanation: A supercomputer is a computer with a high level of performance compared to a general-purpose computer. Performance of a supercomputer is measured in floating-point operations per second (FLOPS) instead of million instructions per second (MIPS).

Explanation: The first computers used for circuitry and for , and were often enormous, taking up entire rooms. They were very expensive to operate and in addition to using a great deal of electricity, generated a lot of heat, which was often the cause of malfunctions. First generation computers relied on , the lowest-level programming language understood by computers, to perform operations, and they could only solve one problem at a time. The and computers are examples of first-generation computing devices.

Explanation: The small program that starts this sequence is known as a bootstrap loader, bootstrap or boot loader. The first instructor of the bootstrap loader program of an operating system is stored in BIOS (Basic Input/Output System).

Explanation: ROM is read-only, it cannot be changed, it is permanent and non-volatile, meaning it also holds its memory even when power is removed. By contrast, random access memory (RAM) is volatile; it is lost when power is removed.

Explanation: SMTP (Simple Mail Transfer Protocol) is a TCP/IP protocol used in sending and receiving e-mail.

Explanation: In MS Excel, formulas are equations that perform various calculations in your worksheets. Though Microsoft has introduced a handful of new functions over the years, the concept of Excel spreadsheet formulas is the same in all versions of Excel 2016, Excel 2013, Excel 2010, Excel 2007 and lower. All Excel formulas begin with an equal sign (=).

Explanation: Time during which a job is processed by the computer is .

Explanation: Semiconductor memory is a digital electronic semiconductor device used for digital data storage, such as computer memory. For these reasons it is used for primary storage, to hold the program and data the computer is currently working on, among other uses.

Explanation: This version was released on 25 September 1996. OS/2 is a series of computer operating systems, initially created by Microsoft and IBM under the leadership of IBM software designer Ed Iacobucci.

Explanation: Intel Corporation is an American multinational corporation and technology company headquartered in Santa Clara, California, in the Silicon Valley.

Explanation: Primary storage is the component of the computer that holds data. It is a part of the CPU, programs and instructions that are currently in use. Primary storage is located on the motherboard . As a result, data can be read from and written to primary storage extremely quickly.

Explanation: Option B is not an advantage of magnetic disk storage because: Magnetic disk storage tends to be more expensive than magnetic tape storage, especially when comparing cost per unit of data storage. Magnetic tapes are generally used for cost-effective long-term storage and archival purposes, whereas magnetic disks offer faster access times and are used for active storage. Therefore, stating that disk storage is less expensive is incorrect, making Option B the right choice as it is not an advantage of magnetic disk storage.

Explanation: There is 5 generation of computer available till now. = The period of first generation: 1946-1959. Vacuum tube based. = The period of second generation: 1959-1965. Transistor based. = The period of third generation: 1965-1971. Integrated Circuit based. = The period of fourth generation: 1971-1980. VLSI microprocessor based. = The period of fifth generation: 1980-onwards. ULSI microprocessor based.

Explanation: The operating system (OS) manages all of the software and hardware on the computer. It performs basic tasks such as file, memory and process management, handling input and output, and controlling peripheral devices such as disk drives and printers and all of the above.

Explanation: Main memory is the primary, internal workspace in the computer, commonly known as RAM. Specifications such as 4GB, 8GB, 12GB and 16GB almost always refer to the capacity of RAM. In contrast, disk or solid state storage capacities in a computer are typically 128GB or 256GB and higher.

Explanation: The microprocessor brought, as thousands of integrated circuits were built onto a single silicon chip. What in the first generation filled an entire room could now fit in the palm of the hand. The Intel 4004 chip, developed in 1971, located all the components of the computer

Explanation: , , and . These components are essential for creating and maintaining the network. are the devices that connect to the network, may be shared resources within the network, and are used to physically connect these devices.A , however, is primarily used to connect a network to an external service provider, such as an Internet Service Provider (ISP). It modulates and demodulates signals for internet connectivity. While modems are commonly used in wide area networks (WANs) or for internet access, they are not a standard component of a LAN, which is designed for local communication and resource sharing within a limited area.

Explanation: Office Open XML (OOXML) format was introduced with Microsoft Office 2007 and became the default format of Microsoft Word ever since. Pertaining file extensions include: .docx

Explanation: General purpose computers are those that can be adopted to countless uses simply by changing its Program. A general purpose computer is a computer that is designed to be able to carry out many different tasks.

Explanation: When referring to data or storage device, writing is taking information and moving it to an alternate location.

Explanation: A local area network (LAN) is a computer network that interconnects computers within a limited area such as a residence, school, laboratory, university campus or office building.

Explanation: The megabyte is a multiple of the unit byte for digital information. Its recommended unit symbol is MB. The unit prefix mega is a multiplier of 1000000 (106) in the International System of Units (SI).

Explanation: Bluetooth is a wireless technology standard for exchanging data over short distances (using short-wavelength UHF radio waves in the ISM band from 2.4 to 2.485 GHz) from fixed and mobile devices, and building personal area networks (PANs). Invented by Dutch electrical engineer Jaap Haartsen, working for telecom vendor Ericsson in 1994.

Explanation: Computers use different types of memory. Some are fast, others are slow. is a type of memory that stores data temporarily while the computer is running. It's fast but loses its data when the computer is turned off. A is a permanent storage device that holds information even when the computer is off. It's much slower than RAM. is a very fast type of memory that's even faster than RAM. It stores frequently accessed data to make the computer work quicker. is a program stored in a special type of memory that starts up the computer. It's not primarily used for general data storage. Therefore, the answer choices that represent high-speed memory are RAM and Cache. However, is significantly faster than RAM.

Explanation: Information is the product of data processing. It is interrelated data and equivalent to finished goods produced after processing the raw material.

Explanation: Graphical pictures that represent an object like file, folder etc are known as . are small graphical representations of programs, files, folders, and other objects on your computer. is a bar displayed on the screen that contains buttons for running programs and other controls. are the rectangular areas of the screen where programs and content are displayed. is the main screen area that you see after you turn on your computer and log on to Windows. Therefore, the correct answer is Option C: Icons.

Explanation: The win.ini file is a Windows system file used with Microsoft Windows 3.x and 9x initialization that loads from the C:Windows directory and loads settings each time Windows boots. For example, the communication drivers, wallpaper, screen saver, languages and fonts are loaded each time the win.ini initializes. If this file becomes corrupt or bad, Windows will either not load, or have several errors as it loads.

Explanation: Microsoft Windows is a group of several graphical operating system families, all of which are developed, marketed, and sold by Microsoft.

Explanation: The function keys, also called the F-keys or Fn keys, are located in the top row of nearly all computer keyboards. They typically contain at least F1 through F12, but may include to F16 on some keyboards. The function that each key provides depends on what program is currently running, and certain keys may provide no function at all.

Explanation: ROM is an acronym for Read-Only Memory. It refers to computer memory chips containing permanent or semi-permanent data. Unlike RAM, ROM is non-volatile; even after you turn off your computer, the contents of ROM will remain. Almost every computer comes with a small amount of ROM containing the boot firmware.

Explanation: An operating system (OS) is system software that manages computer hardware and software resources and provides common services for computer programs. After being initially loaded into the computer by a boot program, manages all the other programs in a computer. The other programs are called applications or application programs. The application programs make use of the operating system by making requests for services through a defined application program interface (API).

Explanation: A RAM chip is a microchip used as RAM storage for computers and other devices. This is the actual chip that is soldered onto small circuit boards in order to create RAM cards or sticks, and it is rated for performance and capacity differently, depending on the model and manufacturer.

Explanation: Large-scale integration (LSI) is the process of integrating or embedding thousands of transistors on a single silicon semiconductor microchip.

Explanation: A Graphical User Interface is a computer interface that allows users to interact with a device through graphical elements such as pictures and animations, as opposed to text-based commands.

Explanation: (EEPROM) is a special type of PROM that can be erased by exposing it to an electrical charge. Like other types of PROM, EEPROM retains its contents even when the power is turned off. Also like other types of ROM, EEPROM is not as fast as RAM. EEPROM is similar to Flash Memory (sometimes called flash EEPROM). The principal difference is that EEPROM requires data to be written or erased one byte at a time whereas flash memory allows data to be written or erased in blocks. This makes flash memory faster.

Explanation: ENIAC(Electronic Numerical Integrator and Computer) was amongst the earliest electronic general-purpose computers made. It was Turing-complete, digital and able to solve "a large class of numerical problems" through reprogramming.

Explanation: A system bus is a single computer bus that connects the major components of a computer system, combining the functions of a data bus to carry information, an address bus to determine where it should be sent, and a control bus to determine its operation.

Explanation: Red hat Linux is not an application software package. Red Hat Enterprise Linux (RHEL) is a Linux-based operating system from Red Hat designed for businesses. RHEL can work on desktops, on servers, in hypervisors or in the cloud.

Explanation: Sent by computer engineer in , the email was simply a test message to himself. The email was sent from one computer to another computer sitting right beside it in Cambridge, Massachusetts, but it traveled via ARPANET, a network of computers that was the precursor to the Internet.

Explanation: The byte is a unit of digital information that most commonly consists of eight bits.

Explanation: Platform independence means that the same program works on any platform (operating system) without needing any modification. In the case of Java the application runs in a Java Virtual Machine which itself isn't platform independent.

Explanation: Optical mark recognition (also called optical mark reading and OMR) is the process of capturing human-marked data from document forms such as surveys and tests.