Which computer discipline involves the wildest scope of computer related knowledge

What is the first step in creating a maintenance ?

Quick pl which one of the following is considered a peripheral? a software b mouse c usb connector d motherboard

Two students are discussing the flow of electricity. student a says that voltage is a measure of the amount of electron flow in a circuit. student b says that power is the product of voltage and current. which of the following statements is correct? a. only student a is correct b. only student b is correct c. both of the two students are correct d. neither of the two students is correct