N-Step SCAN differs from F-SCAN in that ________.
a) N-Step SCAN prevents indefinite postponement, but F-SCAN does not.
b) N-Step SCAN always provides higher throughput than F-SCAN, but results in a larger variance in response times.
c) N-Step SCAN selects requests it will service during the current sweep according to the number of requests; F-SCAN selects such requests according to time.
d) None of the above—N-Step SCAN and F-SCAN are identical.
c) N-Step SCAN selects requests it will service during the current sweep according to the number of requests;
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