content: Thomas M. Thomas and his co-authors did a very poor job this time. When I studied for the BCMSN exam, I was glad to have a copy of the McGraw-Hill book, but this one seems to be nothing but a quick shot, published before the others do. Very rarely, I read a book containing such a huge amount of errors. Fortunately, many of them are such obvious that you have to notice them at once; and not all of them can be presumed to be errata (or at least, they shouldn't be). For example, a multicast address of 2214.0.0.10 (!) was stated, and you will be presented a chaotic mixing of hyphenated and non-hyphenated commands which you will surely be asked to keep apart in the exam.Some chapters as those covering (I'd better say: not covering) EIGRP or BGP are much too short because many topics - as route maps - are almost completely omitted. After all, I would recommend to read the Ciscopress book instead to be sure you get all the information needed.