The term ‘aging’ refers to
(A) booting up the priority of the process in multi-level of queue without feedback.
(B) keeping track of the following a page has been in memory for the purpose of LRU replacement
(C) letting job reside in memory for a certain amount of time so that the number of pages required can be estimated accurately.
(D) gradually increasing the priority of jobs that wait in the system for a long time to remedy infinite blocking
Explanation: In Operating systems, aging is a scheduling technique used to avoid starvation. In this, the priority of the jobs that have a longer waiting time is increased as compared to the newer processes, to avoid the starvation of older processes.
Option (D) is correct.
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