January 2024
Intermediate to advanced
1000 pages
23h 3m
English
book
Networking Essentials Companion Guide v3: Cisco Certified Support Technician (CCST) Networking 100-150, 2nd Edition
by Cisco Networking Academy
Content preview from Networking Essentials Companion Guide v3: Cisco Certified Support Technician (CCST) Networking 100-150, 2nd Edition
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Chapter 30
Physical Layer
Objectives
Upon completion of this chapter, you will be able to answer the following questions:
What are the purpose and functions of the physical layer in the network?
What are characteristics of the physical layer?
What are the basic characteristics of copper cabling?
How is UTP cable used in Ethernet networks?
What is fiber-optic cabling and what are its main advantages over other media?
Key Terms
This chapter uses the following key terms. You can find the definitions in the Glossary.
American National Standards Institute (ANSI)
electromagnetic interference (EMI)
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.