Computer fundamental MCQ Questions and answers- Technical Aptitude

1) The two basic types of record-access methods are sequential and random.
2) The terms random access and sequential access are often used to describe data files.
3) Comparing random versus sequential operations is one way of assessing application efficiency in terms of disk use.

A computer consists of input unit that takes input, a CPU that processes the input and an output unit that produces output. All these devices communicate with each other through a common bus.

Herman Hollerith was an American inventor who developed an electromechanical punched card tabulator to assist in summarizing information and, later, accounting.

The first light pen was created around 1955 as part of the Whirlwind project at MIT. During the 1960s light pens were common on graphics terminals such as the IBM 2250, and were also available for the IBM 3270 text-only terminal.

Source : wikipedia.org

1) It is one of the most important parts of the microprocessor as it is in charge of the entire process.
2) The control unit extracts instructions from memory and decodes them.

A factor which might cause an individual to consider using a computer in criminal activities is the computer's access to large sums of money, The speed with which the crime can be accomplished, EFTS (Electronic Funds Transfer System) and all of the above.

Transmission and presentation of text and graphics is called Video text. Videotext was one of the earliest implementations of an end-user information system.

Card punch is directry controlled from a keyboard. Punch cards (or "punched cards"), also known as Hollerith cards or IBM cards, are paper cards where holes may be punched by hand or machine to represent computer data and instructions. They were a widely-used means of inputting data into early computers.

A document reader is a device that converts an electronic file or printed matter to a form suitable for use by people with visual impairment. The output can be in the form of enhanced video, speech or Braille.

The larger the resolution, the higher the strain on the video card. This is because every pixel on the screen is refreshing at once. More pixels equal a higher strain. While 1920 × 1080 × 60FPS is fine for even low-end video cards, higher resolutions and refresh rates do pose a challenge even for high-end cards.