Basic IT

Option: D
Explanation :VDT (video display terminal or sometimes visual display terminal) is a term used especially in ergonomic studies for the computer display. A display is a computer output surface and projecting mechanism that shows text and often graphic images to the computer user, using a cathode ray tube ( CRT ), liquid crystal display ( LCD ), light-emitting diode, gas plasma, or other image projection technology.

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Option: B
Explanation :The most common form of visual output for user interface is printout. A printout is a term used to describe the actual printed version of text or images. The more appropriate term for a printout would be a hard copy.

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Option: A
Explanation :Daisy wheel printing is an impact printing technology invented in 1970 by Dr Andrew Gabor at Diablo Data Systems.The daisy wheel is considered to be so named because of its resemblance to the daisy flower.The printer uses a metal or plastic disk containing each of the letters, numbers, and other characters it supports.
By 1980 daisy wheel printers had become the dominant technology for high-quality text printing.

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Option: C
Explanation : Xerography also known as electrophotography is a printing and photocopying technique that works on the basis of electrostatic charges. The xerography process is the dominant method of reproducing images and printing computer data and is used in photocopiers, laser printer s and fax machines. The term derives from the Greek words xeros , meaning dry and graphos , meaning writing.
The original xerography process allowed for reproducing or printing only grayscale images. Later, the capability to reproduce and print color images was developed. High-end grayscale and color laser printers can provide hard copy nearly as good as that produced by an offset printer. Xerography may eventually supplant traditional printing for the production of books and magazines.

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Option: D
Explanation :Information : Information is the product of data processing. Information is interrelated data. Information is equivalent to finished goods produced after processing the raw material.
Characteristics of Information :Following are the essential characteristic features :
i) Timeliness : Timeliness means that information must reach the recipients within the prescribed timeframes.
ii) Accuracy : Information should be accurate. It means that information should be free from mistakes, errors &, clear.
iii) Relevance : Information is said to be relevant if it answers especially for the recipient what, why, where, when, who and why? In other words, the MIS should serve reports to managers which is useful and the information helps them to make decisions.
iv) Adequacy : Adequacy means information must be sufficient in quantity, i.e. MIS must provide reports containing information which is required in the deciding processes of decision-making.
v) Completeness : The information which is given to a manager must be complete and should meet all his needs.
vi) Explicitness : A report is said to be of good quality if it does not require further analysis by the recipients for decision making.
vii) Impartiality : Impartial information contains no bias and has been collected without any distorted view of the situation.

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Option: D
Explanation :unstructured data usually refers to information that doesn’t reside in a traditional row-column database.
Unstructured data files often include text and multimedia content. Examples include e-mail messages, word processing documents, videos, photos, audio files, presentations, webpages and many other kinds of business documents. Note that while these sorts of files may have an internal structure, they are still considered “unstructured” because the data they contain doesn’t fit neatly in a database.

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Option: C
Explanation :Electronic publishing (also referred to as e-publishing or digital publishing or online publishing) includes the digital publication of e-books, digital magazines, and the development of digital libraries and catalogs. It also includes an editorial aspect, that consists of editing books, journals or magazines that are mostly destined to be read on a screen (computer, e-reader, tablet, smartphone).

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Option: B
Explanation :MICR (magnetic ink character recognition) is a technology used to verify the legitimacy or originality of paper documents, especially checks. Special ink, which is sensitive to magnetic fields, is used in the printing of certain characters on the original documents. Information can be encoded in the magnetic characters.
The use of MICR can enhance security and minimize the losses caused by some types of crime.

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Option: E
Explanation :From these options floppy disk and universal serial bus(USB) can be carried around easily.
Floppy Disk:- A floppy disk is a data storage device also known as floppies or diskettes. Floppy disks were developed by IBM in the early 1970s. When they are widely accessible in the late 1970s and 1980s then they became the primary storage method for most computer. The popular type of floppy disk is 3 ½-inch.

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Option: C
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