MCSE: The Electives in a Nutshell by Michael Moncur Unconfirmed error reports are from readers. They have not yet been approved or disproved by the author or editor and represent solely the opinion of the reader. If you have any technical questions or error reports, you can send them to booktech@oreilly.com. (Please specify the printing date of your copy.) This page was last updated January 31, 2001. Here's a key to the markup: [page-number]: serious technical mistake {page-number}: minor technical mistake : important language/formatting problem (page-number): language change or minor formatting problem ?page-number?: reader question or request for clarification UNCONFIRMED errors and comments from readers: [30] Middle of the page, after the "On the Exam" box.; Sections 1.a and 1.b explain how to determine the required subnet mask to divide a Class C network into 5 segments. Although the suggested method seems to work for 5 segments, this is not the case for 7 segments. 7 in binary is 111, which also requires 3 bits which results in a subnet mask of 255.255.255.224. However, for 7 segments you require a subnet mask of 255.255.255.240. [39] The last paragraph begins, "DHCP Relay Agent is installed by default in Windows NT Server." This has not been my expierence in the 50 or so installs of NT I have done. If relaying is needed the service can be added during the install but it is not installed by default. The DHCP client is, however, installed by default, and could have been what Michael was thinking of. [305] The second sentence in the fourth paragraph under "Setting Replication Options" now reads: "This option can also be set globally in the properties of the Information Store Site Configuration object." Should read: "This option can also be set globally in the properties of the Public Information Store."