CushionTheBlow (구 BluemoonSoft)

Network Transparency in its most general sense refers to the ability of a protocol to transmit data over the network in a manner which is transparent (invisible) to those using the applications that are using the protocol.

The term is often applied in the context of the X Window System which is able to transmit graphical data over the network and integrate it seamlessly with applications running and displaying locally.

Reference:
http://en.wikipedia.org/wiki/Network_transparency

In graphical computing, a desktop environment (DE, sometimes desktop manager) presents a graphical user interface (GUI) to the user. The name is derived from the desktop metaphor used by most of these interfaces, as opposed to the earlier, textual command line interfaces (CLI). A desktop environment typically provides icons, windows, toolbars, folders, wallpapers, and desktop widgets. In addition, a desktop environment may offer collaboration support like drag and drop and inter-process notification. On the whole, the purpose of a desktop environment is the consistent integration of a graphical user interface and its applications to the user with a consistent look and feel.

Reference:
http://en.wikipedia.org/wiki/Desktop_environment

An Interface metaphor is a set of user interface visuals, actions and procedures that exploit specific knowledge that users already have of other domains. The purpose of the interface metaphor is to give the user instantaneous knowledge about how to interact with the user interface.

The folders and the file cabinet representation of the file system of an operating system is an example of Interface metaphor. Another example is the tree view representation of a file system, as in Windows Explorer, that helps a user to intuitively use it.

Reference:
http://en.wikipedia.org/wiki/Interface_metaphor