Subnetting Question - Is Lammle Wrong?

Unanswered Question
Oct 18th, 2007

Studying for the CCNA 802 test and using the Lammle 6th addition study book. Here is his "Written lab 3.1" on page 159, question 3... "Write the subnet, broadcast address, and valid host range for the following: 192.168.100.66/27.

His answer is 255.255.255.224, broadcast address is 192.168.100.63, and valid host range is 33-62.

My answer is 255.255.255.224, broadcast address is 192.168.100.95 and the valid host range is 65-94.

Who's right?

I'm not trying to slam Lammle here, he's put some great books out there, but I wanna know if I'm doing this right.

Thanks

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cyrilomatsola Fri, 10/19/2007 - 03:48

My answer is:

Broadcast = 192.168.100.95

Valid Host Range = 192.168.100.65-94

Mask 224 = 32 IP block size

Subnetwork-----0 32 64 96

First host-----1 33 65 97

Last host------30 62 94 126

Broadcast------31 63 95 127

Cyril Omatsola

(Nigeria)234-806-354-5331

Hey! dont blame todde for that he has many of us get certified

fdmtester Mon, 10/22/2007 - 16:35

Yep,

You are correct. Lammle is not responsible for the printing.

Cheer

Fdmtester

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