You're missing a verb in the sentence. Don't understand it. :)
A server operating system
wikipedia, google, yahoo, facebook, twitter etc...
Tree
Yes!On a hard disk of a computer multiple operating system can be installed and run.... Example is Ubantu and Windows Xp on a single computerAfter the installation of multiple operating systems your computer will ask you to select a operating system of your choice....
No, it can have many users.I have three for example.
Coal
yes
CimTrak is supported on multiple Windows, Linux, Unix, and Macintosh operating systems
Humans developed multiple uses for their resources.
No, you can create multiple accounts on most of the OS's
it organizes multiple different forms of files and gigs of data. it also organizes music and home entertainment. its actually also known as a PDA and holds addresses, contacts, numbers, etc. PDAs arent used anymore so you dont even have to worry about it, just get a cellphone.
Virtualization
The two concepts build upon each other. A single tasking (ST) operating system is necessarily a single user (SU) operating system, but a single user operating system may be a multi-tasking (MT) operating system. For example, MS-DOS is a SU, ST operating system (there was only one "user" and only one program could run at a time), Microsoft Windows 3.1 was a SU, MT operating system (only one user could be logged in at a time, but multiple tasks could run at once), and Windows XP is a multiple user (MU), MT system, as multiple users could be logged in at once, and multiple tasks could be run at once. There is no known example of a MU, ST operating system.