CompTIA A+ Certification All-in-One Exam Guide, Eleventh Edition (Exams 220-1101 & 220-1102), 11th Edition

CHAPTER 21

The Internet

In this chapter, you will learn how to

•   Explain how the Internet works

•   Connect to the Internet

•   Use Internet application protocols

•   Troubleshoot an Internet connection

The Internet was once the domain of academics and technologists, but over the past few decades it has mushroomed into a dense fabric that interconnects literally billions of devices—including devices used mainly by people and devices that just do their own thing. The Internet was once a place we went intentionally. I’d come home from a long day at work and sit down to be transported into the fantasy universe of a game that I could play with millions of other gamers around the world. I still enjoy escaping into a good game—but these days the ...