If the test prep you are using is for the CCNA exam then "C" is the correct "Cisco" answer (the use of Class B/Class C terminology makes me think this is the case). This is because Cisco still insists, at the CCNA level, on computing subnets using the formula 2^n-2. This assumes that subnet zero and the all ones subnet are unusable. Therefore you have to create 16 subnets, resulting in 14 "usable" to get the required 8 subnets.
In the "real" world, 255.255.224.0 is correct. BTW, what is the VLSM question here? HTH, Prof. Tom Lisa, CCAI Community College of Southern Nevada Cisco ATC/Regional Networking Academy "Cunctando restituit rem" Richard Burdette wrote: A prep test I am using has a question for which I disagree with the answer. Here is the question If I had a Class B address, what subnet mask would I use if I wanted to split it into 8 class C addresses? a.255.255.240.0 b.255.255.255.0 c.255.255.248.0 d.255.255.254.0 The answer from the test is c. I think the answer is not even listed; 255.255.224.0 because to add eight additional subnets we need 2^3=8 bits of subnet which equates to 224 of mask. Am I right or wrong? Rich [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=58605&t=58569 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
