An active heat sync will keep a computer cool and basically cool the CPU and processors. A passive heat sink will only cool the CPU and whatever else it needs to cool when the CPU actually NEEDS to be cooled. I am not sure if this is all correct but I know about basic heat syncs and from my understanding this is right.
Answer:
b) queue
Explanation:
Queue is also an abstract data type or a linear data structure, just like stack data structure, in which the first element is inserted from one end called the REAR(also called tail), and the removal of existing element takes place from the other end called as FRONT(also called head).