I havn't looked at the book you are refering to, so I can't comment specifically on it. I have found that in general, certification books published by a number of different companies will usually have a few mistakes in them.
It's a good thing that you are able to spot mistakes. Whenever I'm using those books I accept nothing untill I've seen it working (or not working) in my lab. I never just use one source for study - the odds of different publishers making the same mistakes are fairly remote.
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
practices to identify possible threats and take security measures. It
provides an overview of basic multicast, the best security practices for
use of this technology, and recommendati...