Question 1

The technique of transmitting multiple signals over a single medium is ____________________.

Accepted Answer

The answer of The technique of transmitting multiple signals over...

Question 2

____________________, and Synchronous Digital Hierarchy (SDH) are two almost identical standards for the high-bandwidth transmission of a wide range of data types over fiber-optic cable.

Accepted Answer

The answer of ____________________, and Synchronous Digital Hierarchy (SDH) are...

Question 3

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 4

A technique that can be used to compress data when a ____ compression is necessary is the Lempel-Ziv technique.
A)random
B)run-length
C)lossy
D)lossless

Accepted Answer

The Lempel-Ziv technique is a lossless compression method. It works by replacing repeated occurrences of data with references to a single copy of that data existing earlier in the uncompressed data stream. Thus, it is particularly useful when a lossless compression is necessary, as it ensures that no information is lost during the data compression process.

Question 5

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

Accepted Answer

The answer of A(n) ____________________ is an assigned set of...

Question 6

In Stat TDM, the ____________________, provides information that the receiving multiplexor can use to detect transmission errors within the frame.

Accepted Answer

The answer of In Stat TDM, the ____________________, provides information...

Question 7

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

Accepted Answer

A lossy compression technique is one that sacrifices some data in order to achieve greater compression ratios. This is often done by removing data that is deemed less important or noticeable to the human eye/ear. Lossy compression is commonly used for audio, video, and image files on the internet and in multimedia applications.

Question 8

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

The answer of A T-1 telecommunications line uses a multiplexing...

Question 9

____________________, transmits data only from active users and does not transmit empty time slots.

Accepted Answer

The answer of ____________________, transmits data only from active users...

Question 10

Each STS level supports a particular data rate and is supported by a physical specification called a(n) ____________________.

Accepted Answer

The answer of Each STS level supports a particular data...

Question 11

Discrete multitone (DMT) is a multiplexing techinque commonly found in _______ systems.
A)TDM
B)DSL
C)ATM
D)microwave

Accepted Answer

Discrete multitone (DMT) is a technique commonly found in digital subscriber line (DSL) systems. It involves dividing the available frequency range into multiple sub-channels and dynamically allocating power to each sub-channel based on noise and interference conditions, allowing for higher data transmission rates over existing copper telephone lines. While it is possible to use DMT in other systems, such as TDM and ATM, it is most commonly associated with DSL. Microwave systems typically use other multiplexing techniques, such as frequency division multiplexing (FDM) or time division multiplexing (TDM).

Question 12

The inability of a single fiber-optic line to meet users' needs is called ____________________.

Accepted Answer

The answer of The inability of a single fiber-optic line...

Question 13

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...

Question 14

____, which is an abbreviation for MPEG (Moving Picture Experts Group) Audio Layer-3, is a common form of audio compression.
A)MPEG
B)GIF
C)MP3
D)JPEG

Accepted Answer

The question specifically asks for the abbreviation of MPEG Audio Layer-3, and MP3 is the correct abbreviation for this. The other options (MPEG, GIF, JPEG) are also file formats, but they are not specifically asking for the abbreviation of MPEG Audio Layer-3.

Question 15

In ____________________, the sharing of the medium is accomplished by dividing available transmission time among users.

Accepted Answer

The answer of In ____________________, the sharing of the medium...

Question 16

____ replaces any repetitions of the same bit or byte that occur in a sequence of data with a single occurrence of the bit/byte and a run count, or simply with a run count.
A)Run-length encoding
B)Lossy compression
C)Random compression
D)Full encoding

Accepted Answer

This process is called run-length encoding, and it is a common form of lossless data compression. It is especially effective in compressing long sequences of repeated values such as in images or audio files.

Question 17

______ is a technique that is very commonly used to compress video images.
A)JPEG
B)MPEG
C)MP3
D)AAA

Accepted Answer

The answer of ______ is a technique that is very...

Question 18

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

The answer of In ____________________ multiplexing, the frames of the...

Question 19

To keep one signal from interfering with another signal, a set of unused frequencies called a(n) ____________________ is usually inserted between the two signals, to provide a form of insulation.

Accepted Answer

The answer of To keep one signal from interfering with...

Question 20

MPEG-1 and MPEG-2-or simply MPEG-are common examples of ____ compression.
A)wavelength encoding
B)differential encoding
C)code division
D)frequency encoding

Accepted Answer

MPEG-1 and MPEG-2 use differential encoding, which reduces redundancy between frames by only encoding differences between them. This results in compressed video and audio files while maintaining reasonable quality.

Quiz 5: Making Connections Efficient: Multiplexing and Compression

The technique of transmitting multiple signals over a single medium is ____________________.

____________________, and Synchronous Digital Hierarchy (SDH) are two almost identical standards for the high-bandwidth transmission of a wide range of data types over fiber-optic cable.

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

A technique that can be used to compress data when a ____ compression is necessary is the Lempel-Ziv technique.

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

In Stat TDM, the ____________________, provides information that the receiving multiplexor can use to detect transmission errors within the frame.

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.

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.

____________________, transmits data only from active users and does not transmit empty time slots.

Each STS level supports a particular data rate and is supported by a physical specification called a(n) ____________________.

Discrete multitone (DMT) is a multiplexing techinque commonly found in _______ systems.

The inability of a single fiber-optic line to meet users' needs is called ____________________.

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

____, which is an abbreviation for MPEG (Moving Picture Experts Group) Audio Layer-3, is a common form of audio compression.

In ____________________, the sharing of the medium is accomplished by dividing available transmission time among users.

____ replaces any repetitions of the same bit or byte that occur in a sequence of data with a single occurrence of the bit/byte and a run count, or simply with a run count.

______ is a technique that is very commonly used to compress video images.

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

To keep one signal from interfering with another signal, a set of unused frequencies called a(n) ____________________ is usually inserted between the two signals, to provide a form of insulation.

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