Question 1

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.

Accepted Answer

DS-1 signaling

Question 2

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

Accepted Answer

A) True 
 B)False  True

Question 3

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

Accepted Answer

T-1

Question 4

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

Accepted Answer

A) True 
 B)False

Question 5

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

Accepted Answer

A) True 
 B)False

Question 6

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

Accepted Answer

The answer of ____________________ is the process of taking data...

Question 7

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

Accepted Answer

A)  wavelength encoding
B)  differential encoding
C)  code division
D)  frequency encoding

Question 8

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.

Accepted Answer

A)  complete
B)  random
C)  lossy
D)  lossless

Question 9

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

Accepted Answer

A)  empirical
B)  random
C)  asynchronous
D)  synchronous

Question 10

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

Accepted Answer

The answer of In general, the device that accepts input...

Question 11

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.

Accepted Answer

A) True 
 B)False

Question 12

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

Accepted Answer

A) True 
 B)False

Question 13

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

Accepted Answer

A)  2 to 4
B)  3 to 6
C)  4 to 8
D)  8 to 10

Question 14

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

Accepted Answer

A)  STS-8
B)  STS-16
C)  STS-32
D)  STS-48

Question 15

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

Accepted Answer

A) True 
 B)False

Question 16

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

Accepted Answer

A) True 
 B)False

Question 17

WDM supports multiple lambdas.

Accepted Answer

A) True 
 B)False

Question 18

Frequency division multiplexing is the latest multiplexing technique.

Accepted Answer

A) True 
 B)False

Question 19

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

Accepted Answer

A)  Statistical time division multiplexing (Stat TDM) 
B)  Wavelength division multiplexing (WDM) 
C)  Time division multiplexing (TDM) 
D)  Channel division multiplexing (CDM)

Question 20

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

Accepted Answer

The answer of Synchronous Optical Network (SONET) and ____________________, are...

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.