July 2012
Intermediate to advanced
700 pages
18h 24m
English
Content preview from CCNA Security 640-554 Official Cert Guide
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Chapter 8. Securing Layer 2 Technologies
This chapter covers the following subjects:
We often take for granted Layer 2 in the network because it just works. Address Resolution Protocol (ARP) and Layer 2 forwarding on Ethernet are all proven technologies that work very well. This certification, the CCNA Security, was built with the presumption that candidates would have a CCNA in route/switch or equivalent knowledge. With this knowledge, your understanding of the details about VLANs, trunking, and inter-VLAN routing is presumed. However, so that you absolutely understand these fundamental concepts, this chapter begins with a review. ...
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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.
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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.