Sunday, June 3, 2007

Question 28

"Memory leak" is a cause of system failure. Which of the following is the appropriate description of a "memory leak?"

a) Part of a program residing in memory is paged out arbitrarily.
b) A process writes its results outside the memory region which is secured for itself, and destroys the regions of other processes.
c) As many processes repeatedly start and stop, many unused memory regions are created here and there, causing a reduction in the efficiency of memory utilization.
d) Memory space secured by processes is not released even after it is no longer needed, thus gradually reducing the memory space which can be used by the system.


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