Sometimes. Using tools like nmap, you can sometimes get some idea of what operating system the computer at an IP address is running. This is not 100% reliable, though.
Two types of OS available one is client or desktop OS and the other is network OS. Desktop OS is the OS which can be used in a standalone computer but in case of network OS a group of computer can use it. Example: Desktop OS : Window xp,7 Network OS : Unix, Linux, Solaris - SuresH
1st way: click start button on the right side search for "my computer" and right click on it and click properties.
yes PDA also have and (OS) operation system any hand held computer has an OS
BIOS
From a network topology perspective, a personal computer that is connected to the network is a node. From a software/OS perspective, this would be a network client, but personal computers can act as, or serve the role of, a server, but I think that is out of scope of the question.
The barebones kernel probably does not, but the whole OS (like Windows or Ubuntu) does.
The easiest way is to activate Apache on a computer that is already on the network (Macintosh computers under OS X include Apache already), and configure it to serve Web pages for the intranet to other people on the network.
Desktop OS is like windows XP professional or home edition, or Mac OS X. Network I believe is either one based on being in a network, like a cloud computing OS; or a server operating system, which tells the computer how to host websites and files in a network, including the internet.
On a computer network, operating systems communicate with each other. In a distributed operating system, a single OS is communicating with itself across multiple machines.
Turn on the feature, if available on your computer's OS and your network router/gateway/firewall. :) Google (search) "UpNP" along with your OS and then again with your router/gateway.
Preboot Execution Environment
It's just a geeky way of saying restart the computer.