Why are there no RAID systems using optical memory?
What will be an ideal response?
RAID technology can be applied to any serial storage mechanism like optical storage. However, RAID is generally used to ensure the reliability of high?speed read/write stores. Optical storage is a largely read?only technology used for storing multimedia, archiving data, and distributing programs and data. It is not used as a
‘random access’ data store and, therefore, RAID technology is not necessary.
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Answer the following statements true (T) or false (F)
1. A method must always return a result to the method’s caller. 2. Two types of methods exist: subroutines and functions. 3. Method arguments can be constants, variables or more involved expressions. 4. The header for a function must define the return type of the value to be returned. 5. The Return statement must occur at the end of a method for it to operate correctly. 6. A function can return multiple values.
Which of the following can you use to hold backups?
A. external hard disks B. CD-Rs C. system repair discs D. system recovery discs
The uppercase letters A, B, and C are 65, 66, and 67 in Unicode, respectively.
Answer the following statement true (T) or false (F)
Which of the following is the postfix form of the infix expression: a * b – (c + d)?
a) a b c d + – b) a b c d + – c) a b c – d + d) a b c – d +