Replacement and placement algorithms-memory management

Question

In the background of memory management, what are replacement and placement algorithms?

Answer 1

Placement algorithms find out where in accessible real-memory to load a program. Common techniques are first-fit, best-fit, and next-fit. Replacement algorithms are employed when memory is full, and one process (part of a process) requires to be swapped out to accommodate a new program. The replacement algorithm finds out which the partitions to be swapped out are.