You work for a small city IT department and you are going ov

You work for a small city IT department, and you are going over the inventory of RAM modules with a new employee. He notices that some of the RAM modules have chips only on one side while others have chips on both sides. How do you explain the difference to him?

A. All single-sided RAM chips are DRAM, or dynamic random access memory, while all double-sided chips are SRAM, or static random access memory.

B. All double-sided RAM chips have exactly twice the memory capacity as all their single-sided counterparts.

C. All single-sided RAM chips have one “rank” and the computer can access all their memory at once, while all double-sized chips have two “ranks” and the computer can access only one rank at a time.

D. All single-sided RAM chips have one “rank” and the computer can access all their memory at once, while all double-sized chips have two “ranks” and the computer can access all the memory in both ranks at the same time.

Solution

C. PC-100 is the clock speed of the memory and means the memory clock frequency is 100 MHz. The memory module for the upgrade does not have to use the same clock speed, and PC-133 or 133 MHz is backwardly compatible with PC-100; however, the computer will only operate at the slower speed.