Question

Explain first fit worst fit and best fit technique of fixed memory partition technique

Answer 1

First-Fit Allocation in Operating Systems

For both fixed and dynamic memory allocation schemes, the operating system must keep list of each memory location noting which are free and which are busy. Then as new jobs come into the system, the free partitions must be allocated.

These partitions may be allocated by 4 ways:

1. First-Fit Memory Allocation

2. Best-Fit Memory Allocation

3. Worst-Fit Memory Allocation

4. Next-Fit Memory Allocation

These are Contiguous memory allocation techniques.

First-Fit Memory Allocation:

This method keeps the free/busy list of jobs organized by memory location, low-ordered to high-ordered memory. In this method, first job claims the first available memory with space more than or equal to it’s size. The operating system doesn’t search for appropriate partition but just allocate the job to the nearest memory partition available with sufficient size.

Please mark as brainliest answer me