Subnet ?

xcanucxcanuc Member Posts: 24 ■□□□□□□□□□
Hi, I just found this forum and I hope it is OK to ask a question on my first post.

I am taking a network engineer course and am currently studying net+. We just went went over subnets and I have a question hopefully someone here can explain to me so I can finally understand it.

According to the Thompson Net+ manual on page #571 in a class B you can create subnets of 2,6,14,30,62,126,254,510,1022,2046,4098,8190, and 16,382. How do you get these numbers? Also if I understand it correctly, you can't create a subnet of 5?

I am sorry if this is a ridiculous question but I have been beating my brain trying to figure it out for 2 days now and I give up. I need help.

Thanks in advance.


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