What is a heat sink, and why is it used for?

Computer hardware systems contained hundreds if not thousands of components. As a computer hardware engineer, you need to be familiar with each of these and their function. Interviewers at Cisco can ask you about any of these during the interview and expect you to know about them. Your experience should allow you to do this easily. However, reviewing the common components of a computer hardware system before the interview will help refresh and prepare you. Practicing questions like this one will also enhance your ability to respond to the Cisco interviewer's questions.