subnetting clarifications

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Hi,
This is my first post in this site i got confused with this answer one of the website provided, just i need some detailed information from the sr expert

Question: What valid host range is the IP address 192.168.111.224 255.255.255.128 a part of?

Answer: 192.168.111.129 through to 192.168.111.254

 

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Hi Durairaj

What exactly is it that you don't understand?

Seems like it may well be subnetting as a concept that you;re struggling with, so you could run a search on this forum (there are numerous past posts on subnetting that will help you), or search Google for some sites that are specifically there to help you with subnetting.

This one is popular, and I found it useful as a reference when I was first learning subnetting - its been around for ages and has many fans.

To help you on your way, consider this:

The default class C subnet looks like this:

255.255.255.0 or, in binary, 11111111111111111111111100000000

When you subnet you are 'borrowing' portions of the host address space to create additional network space. If you don't understand subnetting at all, then the following may be difficult to grasp, but what you are seeing when you see a subnet mask of 255.255.255.128 is a class C address subnetted into two networks.

You'll need to understand the rules for subnetting to know why this is the case, but, for now, just take it as read that you have two networks - one of them is the 192.168.111.0/25 network, the other is the 192.168.111.128/25 network - both with a possible 126 hosts.

Your address (192.168.111.244) falls into the latter range, therefore the address belongs to the 192.168.111.129 - 192.168.111.254 range (the .128 address is the network ID and cannot be used as a valid host on that subnet)

Seriously - that might sound like complete nonsense to you, so check out the link above.

 

Greetings, durairaj29. Got to the other subnetting thread you created and look at my response there in post 5:

http://www.certforums.co.uk/forums/thread19417.html

You'll see a link to a site that will teach you everything you'll need to know about subnetting. Please work through the site's content completely. By the time you get done, you should be able to answer your own questions. Cheers.

 

Out of curiosity, what website did you get that question from?