ISRO2018-61

Question

The Operating System of a computer may periodically collect all the free memory space to form contiguous block of free space. This is called:

1. Concatenation
2. Garbage Collection
3. Collision
4. Dynamic Memory Allocation

Comments

it's called a garbage collection.

Answer 1

Answer Is B.

It is job of Garbage collector to collect all free memory space at one place.

Answer 2

(B) Garbage Collection

Answer 3

B.Garbage Collector

Answer 4

ANSWER: B     Garbage Collection

Explanation: 

      

In order to use memory, programs conduct an action called "allocation" where part of the memory is set aside for a particular use. The C malloc() function and its counterpart calloc() are used to allocate memory. When this memory is no longer needed, it is freed with the free() function. The prototypes for both functions are available in stdlib.h. However, as memory is allocated and freed in various locations, the memory can become fragmented. Sometimes requests to allocate memory will fail as a result. The areas that are causing the allocation  problems are referred to as "garbage" for historic reasons. "Garbage collection" is the process of moving allocated memory around to make larger contiguous blocks available (like defragmenting your hard disk). However, due to very low priority for C and C++.