Enumerate a couple of reasons why it would be impracticable for the external devices to be connected directly to the processor or the system bus

answer; i believe the correct answer is (windows server backup); ///good luck

the answer to your question would be something called hertz. the unit of measurement called a hertz, which is one cycle per second, is used to measure clock speed. within one cycle, your computer processes, refreshes, or updates itself to the changes that it is going through. in the case of computer clock speed, one hertz equals one tick per second. the clock speed of computers is usually measured in megahertz (mhz) or gigahertz (ghz)