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    CHAPTER
                     NETWORKS AROUND US                                                                         1

                                                                                Topics Covered                      95%

                                                                                   Computer Networks
                                                                                   Network Devices
                                   Hey Techie, can computers                       Data Communication System
                                   work together like a team?                      Network Protocols
                                                                                   Types of Computer Networks
                                                                                   Network Topologies
                     Yes, when they’re connected, they                             Transmission Media
                     can help each other.

                                  Connected? How does that work?

                                              They use cables, signals or wireless networks to link them.

                                    But, how do they actually share things like files or data?

                                                       Great question! Let’s explore how it all works in the
                                                                                                    chapter.

                                                                                                  Networks Around Us   7

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