Summary
The information covered today provides a brief overview of the key components of a network. When you sit in front of a desktop to send an e-mail, your transmission passes through physical media, then to a hub or switch, then to a router, and lastly to a server, where it sits until requested by the recipient. Days 30 and 29 describe the software and protocols used by these networking devices to transmit, forward, and route this information. If you have a copy of the CCNA Flash Cards and Exam Practice Pack (CCENT Exam 640-822 and CCNA Exams 640-816 and 640-802), Third Edition, you can further review the topics from today on pages 5–36.
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