Exam 5: Making Connections Efficient: Multiplexing and Compression

A T-1 system sends the equivalent of 24 voice grade telephone lines over one line.

A T-1 telecommunications line uses a multiplexing technique termed ____________________,which provides for the multiplexing of up to 24 separate channels at a total speed of 1.544 Mbps.

One of the more common and simpler examples of lossless compression is ____________________-length encoding.

A(n)____________________ is an assigned set of frequencies that is used to transmit the user's signal.

A T-1 system continuously sends a signal,even if there is no real data to transmit.

SDH was developed in Europe by ITU-T.

____ multiplexing is the multiplexing technique used to support SONET.

____________________ is the process of taking data and somehow packing more of it into the same space.

What is the difference between a multiplexor and a demultiplexor?

In ____________________ multiplexing,the frames of the multiplexor's output stream are divided into 24 separate digitized voice/data channels of 64 kbps each.

The data rate of OC-3 is exactly thirty times the rate of OC-1.

Both frequency division multiplexing and synchronous time division multiplexing can waste unused transmission space.

Since time division multiplexing was introduced,it has split into two roughly parallel but separate technologies: synchronous time division multiplexing and ____ time division multiplexing.

Code division multiplexing uses ____________________ spread spectrum technology.

____ is the assignment of nonoverlapping frequency ranges to each "user" of a medium.

A T-1 system multiplexes _______ into each frame.