
438 Networking Explained, Second Edition
gence technology.) To satisfy all three network types, some basic functions must be cre-
ated to allow all three types of network technologies to coexist.
28. What kind of technology is needed for data, voice, and video?
Data networking allows traffic characteristics that can be bursty in nature, and data can
have variable-length packets or frames. Data traffic also can tolerate a certain amount of
transmission delay, especially for non-real-time traffic. This implies that data arrival rates
can be variable in nature, which suggests that variable-bit rate (VBR) transmissions are
acceptable to data applications. ...