Good information in here. It's good if you're looking for a cheap way to study. When you upgrade to Pix OS 8 some of the commands are the same, but you implement them at different config levels. You will conf t and then int ethernet0 to configure the interfaces for example. With the older OS it's completely different (which the book contains information for).I recommend a newer book (or a revision) if you're actually studying for the test.