Computer Fundamental Miscellaneous - Study Mode

[#506] Which of the following is not used for storage purposes with main frame computers?
Correct Answer

(D) diskettes

Explanation

Solution: Although we can store the data in diskettes then why it is not used for the storage purposes. A diskette is a random access, removable data storage medium that can be used with personal computers.

[#507] Which is true for the digital computer?
Correct Answer

(B) It represents the decimal numbers through a string of binary digits

Explanation

Solution: It represents the decimal numbers through a string of binary digits that are true for the digital computer. The advantage of the Binary Coded Decimal system is that each decimal digit is represented by a group of 4 binary digits or bits in much the same way as Hexadecimal.

[#508] Which of the following terminals' output most closely resembles the output produced by a plotter?
Correct Answer

(A) graphics terminal

Explanation

Solution: A graphics printer that draws images with ink pens. Plotters actually draw point-to-point lines directly from vector graphics files. The plotter was the first computer output device that could print graphics as well as accommodate full-size engineering and architectural drawings.

[#509] What is the main advantage of magnetic core memory over semiconductor RAM memory?
Correct Answer

(D) non volatile

Explanation

Solution: Magnetic core Memory is non volatile. Semi conductor memory is faster, economical, smaller in size and lighter, but magnetic memories are slower compared to that. Semi conductor memories consumes less power, but magnetic memory consumes more power than that.

[#510] Which of the following is used for serial access storage only?
Correct Answer

(B) Magnetic tape

Explanation

Solution: Magnetic tape is a medium for magnetic recording, made of a thin, magnetizable coating on a long, narrow strip of plastic film. It was developed in Germany in 1928, based on magnetic wire recording. Devices that record and play back audio and video using magnetic tape are tape recorders and video tape recorders respectively. A device that stores computer data on magnetic tape is known as a tape drive.