MCSA XP

Answer - D - Bitmap Caching is a Remote Desktop feature that optimizes performance across slow dial-up connections.

Key Takeaway: Bitmap caching stores commonly-used graphical objects, such as bitmaps, on a local disk. A bitmap cache reduces the bitmap data transferred between the Remote Desktop Protocol client and the server. The RDP client creates an uncompressed, temporary bitmap cache file that contains bitmaps that are repeatedly sent from the terminal server to the client.