Computer Fundamental Miscellaneous — Part 1 MCQs with Explanations

A scanner is a device that captures images from physical sources such as printed text or photographs and converts them into digital form that can be stored, edited, or transmitted electronically. Scanners work by using a light-sensitive sensor to capture the image, which is then converted into digital data that can be manipulated using software. Scanners are commonly used for tasks such as digitizing documents, archiving photographs, and creating digital art. Other options such as keyboard, plotter and OMR are not related to the process of converting physical images into digital form.

SMTP (Simple Mail Transfer Protocol) is a TCP/IP protocol used in sending and receiving e-mail. However, since it is limited in its ability to queue messages at the receiving end, it is usually used with one of two other protocols, POP3 or IMAP that let the user save messages in a server mailbox and download them periodically from the server. SMTP usually is implemented to operate over Internet port 25 . Many mail servers now support Extended Simple Mail Transfer Protocol (ESMTP), which allows multimedia files to be delivered as e-mail.

The von Neumann architecture , also known as the von Neumann model , is the foundation of modern computer design. It was proposed by the mathematician and physicist John von Neumann in the 1940s. This architecture is characterized by the use of a central processing unit (CPU) that can execute a series of instructions stored in memory . The instructions are fetched from memory, decoded, and executed sequentially, allowing for the manipulation of data and the execution of various operations. This concept of stored-program computers revolutionized the field of computing and forms the basis for virtually all modern computers today. Option B: Charles Babbage Charles Babbage is known for designing the analytical engine , a mechanical general-purpose computer, in the 1830s. While his work laid the groundwork for computing concepts, his designs were not fully realized during his lifetime. Option C: Blaise Pascal Blaise Pascal, a French mathematician, invented the Pascaline , an early mechanical calculator, in the 17th century. While this device contributed to computational advancements, it did not establish the basic architecture of modern computers. Option D: Garden Moore This option is not associated with the development of the basic architecture of computers. The correct spelling should be "Gordon Moore," who co-founded Intel and is known for formulating "Moore's Law" related to the exponential growth of semiconductor technology. Option E: None of these While options A and B are the most relevant to the development of computer architecture, the correct answer is Option A: John Von Neumann as he proposed the von Neumann architecture that is fundamental to modern computers.

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 (=).

There is 5 generation of computer available till now. 1 st Generation of Computer = The period of first generation: 1946-1959. Vacuum tube based. 2 nd Generation of Computer = The period of second generation: 1959-1965. Transistor based. 3 rd Generation of Computer = The period of third generation: 1965-1971. Integrated Circuit based. 4 th Generation of Computer = The period of fourth generation: 1971-1980. VLSI microprocessor based. 5 th Generation of Computer = The period of fifth generation: 1980-onwards. ULSI microprocessor based.

Fifth generation computing devices, based on artificial intelligence , are still in development, though there are some applications, such as voice recognition, that are being used today. The use of parallel processing and superconductors is helping to make artificial intelligence a reality. Quantum computation and molecular and nanotechnology will radically change the face of computers in years to come. The goal of fifth-generation computing is to develop devices that respond to natural language input and are capable of learning and self-organization.

The first computers used vacuum tubes for circuitry and magnetic drums for memory , 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 machine language , the lowest-level programming language understood by computers, to perform operations, and they could only solve one problem at a time. Input was based on punched cards and paper tape, and output was displayed on printouts. The UNIVAC and ENIAC computers are examples of first-generation computing devices.

The microprocessor brought the fourth generation of computers , 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—from the Central processing Unit (CPU) and memory to input/output controls—on a single chip. Tthese small computers became more powerful, they could be linked together to form networks, which eventually led to the development of the Internet. Fourth generation computers also saw the development of GUIs , the mouse and handheld devices.

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.

Rom is non-volatile memory include read-only memory, flash memory, ferroelectric, most types of magnetic computer storage devices .This is because you cannot erase or modify it when the computer system is turned off. Computer manufacturers write codes on the ROM chip, and users cannot alter or interfere with it.

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.

When any data or instruction is entered into the memory of a computer, it is considered as input. Input refers to the process of providing data or instructions to a computer for processing. This can be done through various input devices such as keyboards, mice, scanners, etc. Input is an essential step in the computer's functioning as it allows the computer to receive and process information. Therefore, in the context of the given question, the data or instruction entered into the computer's memory is considered as input.

The correct answer is Option A: Execution Time . Let's break it down: 1. What is "Processing a job"? Imagine you ask your computer to open a game, calculate a sum, or save a document. The time your computer's main brain (the CPU ) spends actually *doing* that task, step-by-step, following all the instructions, is called processing. Why Option A is correct: Execution Time is exactly what it sounds like! It's the actual time the computer (specifically the CPU) spends performing all the instructions and calculations for a particular task or "job" . If your computer takes 5 seconds to load a game from when it starts working on it until it finishes, those 5 seconds are its execution time for that task. Think of it like this: If you are building a toy car, the "execution time" is the time you spend actively putting the pieces together and completing the building process. Why other options are incorrect: Option B: Delay Time This refers to time lost because of various reasons, like waiting for information to come from the internet (network delay), or a slight pause before the computer starts a task due to other activities. It's time spent *waiting* or being *delayed*, not *actively processing* the job itself. Option C: Real Time This describes a *type* of computer system or processing where tasks must be completed within very strict and guaranteed time limits. For example, systems in airplanes or medical equipment often operate in "real time" because delays can be critical. It's about *how* quickly and consistently a task must be done (its characteristics), not the *duration* of a single task's processing. Option D: Waiting Time This is the time a job has to wait in a queue because the computer's CPU is busy with other tasks, or it's waiting for another resource (like data from a hard drive) to become available. During "waiting time," the job is just sitting there, not being actively processed by the CPU yet.

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

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).

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.

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

An error in computer program is known as Bug and process of fixing Bugs are known as Debug.

The correct answer is Option C: Application software . Let's break down why: * Operating System: 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. * Processing Device: This is a physical component like the CPU (Central Processing Unit) that performs calculations and instructions. Microsoft Word is not a physical device. * Application Software: This is software designed to perform a specific task for the user. Microsoft Word is designed for creating and editing documents , making it application software. * Input Device: 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. * System Software: 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 Microsoft Word is software designed for a specific user task (creating documents) , it falls into the category of application software.

Supercomputers were introduced in the 1960s, and for several decades the fastest were made by Seymour Cray 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)

Graphical pictures that represent an object like file, folder etc are known as Icons . Icons are small graphical representations of programs, files, folders, and other objects on your computer. Task bar is a bar displayed on the screen that contains buttons for running programs and other controls. Windows are the rectangular areas of the screen where programs and content are displayed. Desktop 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.

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.

In mathematics and digital electronics, a binary number is a number expressed in the base-2 numeral system or binary numeral system, which uses only two symbols: typically 0 (zero) and 1 (one). The base-2 numeral system is a positional notation with a radix of 2. Each digit is referred to as a bit.

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.

An integrated circuit or monolithic integrated circuit (also referred to as an IC, a chip, or a microchip) is a set of electronic circuits on one small flat piece (or "chip") of semiconductor material, normally silicon .

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.

An arithmetic logic unit (ALU) is a digital circuit used to perform arithmetic and logic operations. It represents the fundamental building block of the central processing unit (CPU) of a computer. Modern CPUs contain very powerful and complex ALUs.

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.

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

The Intel 4004 is a 4-bit central processing unit (CPU) released by Intel Corporation in 1971. It was the first commercially available microprocessor by Intel. The 4004 was the first in a long line of Intel CPUs. The chip design started in April 1970, when Federico Faggin joined Intel, and it was completed under his leadership in January 1971.

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.

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

Sent by computer engineer Ray Tomlinson in 1971 , 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.

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).

An arithmetic logic unit (ALU) is a combinational digital electronic circuit that performs arithmetic and bitwise operations on integer binary numbers.

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.

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).

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.

A programmable read-only memory (PROM) or field programmable read-only memory (FPROM) or one-time programmable non-volatile memory (OTP NVM) is a form of digital memory where the setting of each bit is locked by a fuse or antifuse. It is one type of ROM (read-only memory). The data in them is permanent and cannot be changed. PROMs are used in digital electronic devices to store permanent data, usually low level programs such as firmware (microcode).

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.