4. a friend knows you are taking a technology class in college and asks you how a hard drive works. in your own words, describe how a hard drive works.

professionals can use many types of technology that can them. some examples are, computers (they research and can use for programs for data, they are also used for job applications, school work, and even to make new ideas), speedometers (can get data for unknown data), sometimes something as small as a pen (used for rough drafts, to insert data, and again job applications).

b. xor is the correct answer