Question by don: Network ID, Host ID, IP Address, Default Gateway and Subnet mask?

http://img527.imageshack.us/img527/3415/network0b.jpg

According to the Image:-

“IP Address: Unique Device (host) Address.”
What is a host?

“Default Gateway: IP Address of the Router on the Same Physical Segment”
What is a Physical Segment?

Best answer:

Answer by Tim the Tech
A host is a device that is using the IP address, like your PC or laptop.

Same Physical Segment in a nutshell means that it is in the same IP range as your host, so if your IP address is 192.168.10.100 with a subnet mask of 255.255.255.0 then in order to be in the same physical segment your router would need to have an address of 192.168.10.X.
This could get really in depth if we start explaining subnets etc., but in short form when a subnet mask is 255.255.255.0 it means that any device that wants to communicate with it must have an IP address that matches the first 3 sets of numbers. A subnet mask of 255.255.0.0 means that it only has to match the first 2 sets of numbers (in this example 192.168.X.X) and 255.0.0.0 only needs to be in the 192.X.X.X range.
Hope this helps

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Question by : How to decide Ip address and Subnet mask?
I am not able to decide how can i Decide IP address and subnet mask according to the host requirement ?

Best answer:

Answer by Rute
Remember the powers of 2…2-4-8-16-32-64-128. If you need X numbers of hosts, choose the power that is greater than X. For example, you need 56 hosts. Choose 64 in that case. To determine the subnet mask for that, just subtract your chosen number (64) from 256. 256 – 64 = 192. Therefore, the subnet would be 255.255.255.192.

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Question by Ryan G: How do i figure out what subnet mask to use for a given IP Address? (I run out of detail characters)?
Okay, so I’m taking the first coarse of my Networking program and I’ve hit a bit of a jam. Due to some things that were out of my control I missed a few classes. The professor is giving me opportunity to make up a portion of the work i owe. Now keep in mind I am in no way just trying to get free answers. I am seriously stuck and am about to give an example of one of the things I must do in my homework in am asking in return for an answer, but only if it has a detailed explanation as to why, so that i may do the rest of the work myself.

On the last page of my work sheet there’s a chart i must fill out. The titles consist of: IP Address, Class, Subnet Mask, Network Address, Host Address, Broadcast Address. We are given the IP Address and must figure the rest out on our own. (of course we have the book, but i’m getting a headache). The first problem we are given the IP Address: 192.10.10.34. I can convert it to binary and get 11000000 00001010 00001010 00100010. Out of characters… help

Best answer:

Answer by needtoknow
First, you have to figure out if the IP address is a class A, B, C, or D IP address.
You have to replace the host part of the address with 0 and the network part with 255.
So, 192.10.10.34 is a class C address, and since class C has 3 network numbers and 1 host number. The solution will be 255.255.255.0.

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