Computer Memory and Storage

It is not a type of ROM.

This option is correct as virtual memory is the hardware technique where the sysytem appears to have more memory that it actually does.This is done by time sharing , the physical memory and storage partsof the memory disk when they are actively being used.

This option is correct as this me,mory generally has capacitors.Since charge on the capacitor leaks out the memory gets lost and needs refreshing.

It holds the address of the next instruction to be executed.

It is done by Stack Pointer.

The system performance can be improved by placing a small, fast acting buffer memory between the processor and the main memory. This buffer memory is called as cache memory.

Internal memory refers to the set of CPU resistors that serve as working memory, storing temporary results during program execution.

Data Bus carries a word to/ from a memory.

This is a sequence of control words corresponding to the control sequence of a machine instruction that constitutes the micro routine for that instruction.

The part of an operating system that resides more or less continuously in the main memory and consists of its most frequently used part is called kernel.

Store operation transfers an item of information from the processor to a specific memory location and destroys the former contents of that location.

Microprogram memory is a special memory in which the microroutines corresponding to the instruction set of a computer are stored.

In fetch phase, the contents of the memory location pointed by the program counter are fetched and loaded into the instruction register.

The CPU address register called stack pointer automatically keeps track of the stack entry point.

Yes, all of the above options are the true statements.