Sunday, June 3, 2007

Question 22

Which of the following is the appropriate description of the features and applications of optical disk drives?

a) Offering relatively fast access and data transfer, they are used widely on various kinds of equipment from mainframes to PCs in order to implement virtual storage.
b) Coming in read-only types, write-once types, and erasable types, they are used to save large amounts of data such as image data.
c) They are used to store data of the order of 1 MB, are notable for their light weight and low prices, and are therefore easily replaceable.
d) Used from early on for auxiliary storage, they have been used for information interchange and for archiving files. Currently, the main types are cartridge types rather than open-reel types.

answer

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