04-30-2010 08:21 PM - edited 03-06-2019 10:53 AM
I am preparing for the CCNA. I was given the follwing practice question. Given subnet mask 255.255.254.0, which of the following can be assigned to hosts? 186.54.3.0, 175.33.3.255, 26.35.2.255, 152.135.7.0.
[For the CCNA in 2003 .254 was a valid mask. Is .254 a valid mask?]
Thanks.
05-01-2010 05:25 AM
Yes, 255.255.254.0 is a valid mask.
The followings are valid hosts for the above mask:
186.54.3.0
26.35.2.255
152.135.7.0
05-01-2010 05:51 AM
Could you explain how you came to the answers. So, with a 254 mask, there are no network nor broadcast addresses?
Thanks.
Said
05-01-2010 05:56 AM
Here we go:
186.54.3.0 (mask: 255.255.254.0):
Network address: 186.54.2.0
Broadcast address: 186.54.3.255
175.33.3.255 (mask: 255.255.254.0):
Network address: 175.33.2.0
Broadcast address: 175.33.3.255
26.35.2.255 (mask: 255.255.254.0):
Network address: 26.35.2.0
Broadcast address: 26.35.3.255
152.135.7.0 (mask: 255.255.254.0):
Network address: 152.135.6.0
Broadcast address: 152.135.7.255
Hope that helps.
05-01-2010 07:39 AM
Could you explain how you came to the answers. So, with a 254 mask, there are no network nor broadcast addresses?
Thanks.
Said
Hi Said,
Check out the below link for more explanation on subnetting,hope to help !!
http://articles.techrepublic.com.com/5100-10878_11-6089187.html
Ganesh.H
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