Why is hard disk storage much slower to access than main memory?
a) Accessing data on a hard disk requires mechanical movement of the read/write head.
b) Disks are located farther from a system’s processors.
c) Disks must be access via a hardware controller.
d) all of the above
a) Accessing data on a hard disk requires mechanical movement of the read/write head.
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A(n) _____________________ is usually implemented as a two-dimensional array, showing connections between vertices in a graph.
A. adjacency array B. connection matrix C. connection array D. adjacency matrix
When you create relationships in a relational database, you give it power
Indicate whether the statement is true or false
Software deteriorates rather than wears out because
A. Defects are more likely to arise after software has been used often B. Software suffers from exposure to hostile environments C. Multiple change requests introduce errors in component interactions D. Software spare parts become harder to order
You can use the text boxes on the ____________________Controls option bar to make entries or to visually inspect the results of your changes.
Fill in the blank(s) with the appropriate word(s).