Known errors in "Internet Effectively" by Adams & Scollard

This is not an official list from the authors -- just some errors noticed by CCSF instructors and students.

Page 8, first paragraph says of geosynchronous satellites that "...they don't actually orbit the Earth...", but it should say "They orbit the Earth in a day, synchronized with the Earth's rotation, so that they appear stationary in the sky, never rising or setting."

Page 25, last paragraph gives this example of an IP address 127.324.0.89, which is an invalid IP address for two important reasons. First, each number must be between 0 and 255, so 324 is not valid. Second, all IP addresses beginning with 127 are loopback addresses and are not used for Internet traffic. A better example is -- one of the addresses for Google.

Page 26, second paragraph: This definition of the word host is incorrect. For the correct definition, go to:
and look at definition 2: Any computer that is connected to a TCP/IP network is a host. Web servers are the computers which usually require static IP addresses and domain names.

Page 33, first paragraph: The incorrect definition of the word host is repeated here. The correct definition is above.

Page 36, RFC 1149 description: useing should be using

Page 38, second section US National Science Foundation to the Rescue refers to "T1 fiber optics" and "T3 fiber optics". T1 and T3 use wires to transmit data, not fiber optics (see T1 cables).

Page 59, fourth paragraph from the bottom knowbots and spiders are different, as explained here. The topic discussed here is spiders, not knowbots.

Last modified 9-4-05