In article
>,
> yoda9999 wrote:
>
>> Learn and practice subnetting online:
>>
>>formatting link>
>$3.99 for an e-book with stuff you can find for free on the web (it
>could be worth it to save you the searching). Sample contents list
>shows lots of obsolete stuff about classful networking - NOT a good plan >to learn that.
>
>>formatting link>
>First sample question it gave me was:
>
> Question: How many subnets and hosts can you get from the network
> 133.117.0.0 255.255.255.0?
>
>The correct answer to that is between 1 subnet with 254 hosts and 64
>subnets with 2 hosts. The answer given was:
>
> Answer: 256 subnets and 254 hosts
>
>Which is wrong. That's the answer to the question "How many subnets
>with mask 255.255.255.0 can you get from a network with mask
>255.255.0.0, and how many hosts are on each?" or "How many /24 subnets
>can you get from a /16 prefix, and how many available host addresses are
>there in a /24 prefix?".
>
>Sam