The correct answer is: E. None of the above
The reserved memory area is a region of memory that is reserved for the operating system. The size of the reserved memory area varies depending on the operating system and the hardware configuration. For example, on a 32-bit Windows system, the reserved memory area is typically 1 MB in size.
Option A: 64 kb is not a common size for the reserved memory area.
Option B: 384 kb is not a common size for the reserved memory area.
Option C: 640 kb is not a common size for the reserved memory area.
Option D: 1024 kb is not a common size for the reserved memory area.
The reserved memory area is used by the operating system to store critical system files and data. It is also used to store the memory map, which is a table that keeps track of all the memory that is currently in use. The reserved memory area is also used to store the kernel, which is the core of the operating system.
The reserved memory area is typically located at the beginning of physical memory. This is because the operating system needs to be able to access the reserved memory area quickly. The reserved memory area is also typically protected from being accessed by user programs. This is to prevent user programs from accidentally or intentionally damaging the operating system.