Eeerm WHAT???
Bitmap would need 100Mbit ethernet. X Servers take time to write.
No. 10 meg network (old style co-ax (both thick and thin) eithernet) with a variety of Mainframe, dumb terminal, fat and thin clients running X Server and clients all over the place (this is a few years back now) using various bitmapped images of various sizes being passed across that network.
And more recently, using X and 1200 x 968 full 16 bit graphics of BZFlag across a 100 meg network (ok so it canes it) works fine. Normal bitmaps should be fine on 10 meg.
J