how many ips we can assign to a particular pc

IP address is assigned to the NIC of the PC.The total number of ip addresses that can be assigned varies depending on the operating system.
DOS,likely just 1.
Windows 2000, for example, can have at least hundreds of addresses assigned, but only 51 reliably work (51 total, spread out over all your nics, weather you have one or several). After the 52nd is added, Active Directory takes a dump and bad things happen.
In Linux, it will vary by kernel version. Older kernels may be limited to 30 or so, whereas newer ones will be much higher.
If you are using WindowsXP you can configure the TCP/IP Protocol in your Network Properties as follows:Control Panel -> Network Connections -> Local Area Connection -> Properties -> Internet Protocol (TCP/IP) * Type in a static ip address * Then click Advanced * Under the "Ip address" group box, click add to add more ip addresses.
You would need know one thing in this case where you need to connect to more then one different sub net where proper routing has not been set up.


To check ip address use the method below:


1. Click Start, and then select All Programs (Windows 7, Vista, and XP) or Programs (2000).
2. Click Accessories, and then Command Prompt.
3. At the command prompt, enter: ipconfig
You can check your ip address.
1. In the system tray, click the network connection icon and select Open Network and Sharing Center.2. To view the IP address of a wired connection, click Local Area Connection.
To view the IP address of a wireless adapter, click Wireless Network Connection (Network Name).
3. Click Details... . Your IP address will appear next to "IPv4 Address".