Despite being endorsed by CCEA and having been written by a pair of experienced examiners (as stated on the back cover), the book contains a number of basic errors. The list below is not exhaustive, but provides a representative sample. It is not known if the errors are on the part of the authors or editors.
Internet (page 160): the book states 'The Internet is a WAN'. The Wikipedia article on the Internet makes it clear that the Internet is not a single WAN but a collection of WANs
MSN (page 179): while MSN is a collection of internet services, the book confuses this with the .NET Messenger Service formerly known as MSN messenger. It states: "Microsoft designed MSN for instant messaging"