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What are the drawbacks of contiguous allocation of disk space?
The disadvantages are
a. Suffers from internal fragmentation
b. Suffers from external fragmentation
c. File cannot be extended
d. Difficulty in finding space for a new file
e. Size of the file is to be declared in advance
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What is input output operation ?
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What is Data Warehouse?
Direct memory access Many computers avoid burdening the main CPU with programmed I/O by offloading sine if this work to a special-purpose processor known as a direct memory add
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