A former coworker wrote that book. When it came out he had a little party where he declared it obsolete already.
Reminds me of the old quip "how do you know if the spec requirements are out of date?" - the ink is dry.
That's funny, I love that.
"The Network Information Service (NIS) was formerly known as Sun Yellow Pages (YP). The functionality of the two remains the same; only the name has changed. The name Yellow Pages is a registered trademark in the United Kingdom of British Telecommunications PLC, and cannot be used without permission."