ALS TCP/IP For Windows NT Comments and Corrections (242515)

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Lab Manual, Page 43: Errors In "Defining a Subnet Mask" Section

The section under the chart on page 43 incorrectly states that the value of x must be at least 5, and the value of y must be at least 7. It should state that the value of x must be at least 7, and the value of y must be at least 8. Also, the last bullet should be ignored because it incorrectly states that you could use 9 and 7. Using 7 bits would not produce a result greater than the required 200.

Change:
"Therefore, for the problem above, the value of x must be at least 5, and the value of y must be at least 7. Further, x+y must be 16. You could choose to use:

    7 bits for subnetting and 9 bits for hosts per subnet, or
    8 bits for subnetting and 8 bits for hosts per subnet, or
    9 bits for subnetting and 7 bits for hosts per subnet."
				

To:
"Therefore, for the problem above, the value of x must be at least 7, and the value of y must be at least 8. Further, x+y must be 16. You could choose to use:

    7 bits for subnetting and 9 bits for hosts per subnet, or
    8 bits for subnetting and 8 bits for hosts per subnet." 
				

Microsoft Press is committed to providing informative and accurate books. All comments and corrections listed above are ready for inclusion in future printings of this book. If you have a later printing of this book, it may already contain most or all of the above corrections.