The first one is plural. The second is singular.
Advanced users are the typical users with more technical knowledge. Standard users are the normal ones who uses computers to just get the task done.
If you are sending email from a desktop computer, you are a home (or business) user; if you are sending it from your smart phone (I-phone, Android, blackberry, etc.) then you are a mobile user.
Discretionary user lay between expert and novice users
the difference between end user system and organisational system
A user variable is a memory which is used in specific function or functionality. A system variable is kinda of generic, accessible to all users of the system. It does not bind to specific process as such.
OUs are what is used to segregate and filter department bases on the region or type of users, groups, or computers. Users are placed into groups in an OU to control who has administrative authority over that user and group.
exlain the differnce between an employing and user organisation
registry
It is isn't a configuration difference to go between single user and multi-user modes in Unix. You use a different 'run' level for that. The 'init' levels can determine whether you are operating in a single user mode or a multiple user mode. Single user mode is usually reserved for system administration.
There is basically no difference. Either the OS supports more than 1 user or it doesn't. Windows 7 for example supports single or multi users. Other Windows 7 tips and tricks available at: http://www.waltwachon.weebly.com
a mandatory A local user profile is stored on the computer to which the user logs on.
Human-computer interaction (HCI) is the study of interaction between people (users) and computers. It is often regarded as the intersection of computer science, behavioral sciences, design and several other fields of study.Interaction between users and computers occurs at the user interface (or simply interface), which includes both software and hardware; for example, characters or objects displayed by software on a personal computer's monitor, input received from users via hardware peripherals such as keyboards and mice, and other user interactions with large-scale computerized systems such as aircraft and power plants