Exam 5: Making Connections Efficient: Multiplexing and Compression

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.

The STS multiplexor in a SONET network can accept electrical signals from copper-based media.

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

Synchronous time division multiplexing does not require as high-speed a line as statistical time division multiplexing does.

As with a simple connection between one sending device and one receiving device, maintaining synchronization across a multiplexed link is important.

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

MPEG-1 and MPEG-2-or simply MPEG-are common examples of ____ compression.

If a compression technique does lose some of the data as a result of the compression process, then it is referred to as a ____ compression technique.

Statistical time division multiplexing is sometimes called ____ time division multiplexing.

In general, the device that accepts input from one or more users is called the ____________________.

The basic way to perform compression is to look for some common pattern in the data and replace each data pattern with a symbol or symbols that will consume less space during transmission or storage.

SONET is a more modern term for the older T-1 system.

Code division multiplexing can produce system capacities that are ____ times those of frequency division multiplexing systems.

It is relatively simple to multiplex four STS-12 signals into one ____ signal.

Wavelength division multiplexing (WDM) is, in essence, a time division multiplexing technique.

The MP3 encoder produces a data stream that has a much faster data rate than that of conventional CD-quality music.

WDM supports multiple lambdas.

Frequency division multiplexing is the latest multiplexing technique.

____ multiplexes multiple data streams onto a single fiber-optic line.

Synchronous Optical Network (SONET) and ____________________, are powerful standards for multiplexing data streams over a single medium.