Data Communication and Networks,
Midterm: Question Bank
_ is the transmission of multiple signals on one medium.
Multiplexing
Codec
Modem
Package - ANS-Multiplexing
Data is information that has been translated into a form that is more conducive to storage,
transmission, and calculation.
True/False - ANS-True
____________________ are the electric or electromagnetic impulses used to encode and
transmit data.- ANS-signals
The ____________________ of a signal is the position of the waveform relative to a given
moment of time, or relative to time zero.- ANS-phase
____________________ satellites are found 22,300 miles from the Earth and are always
positioned over the same point on Earth. - ANS-GEO
When a light signal inside the cable bounces off the cable wall and back cable, this is called
refraction
reflection
blinking
friction - ANS-reflection
On occasion, a company will create a protocol that, while not an official standard, becomes so
popular that other companies start using it.
True/False - ANS-True
The ____ component of USB strictly specifies the exact dimensions of the interface's
connectors and cabling.
procedural
functional
mechanical
electrical - ANS-mechanical
Cell phones are an example of dynamically assigned channels.
True/False - ANS-True
, 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.
complete
random
lossy
lossless - ANS-lossy
Longitudinal parity is sometimes called longitudinal redundancy check or _____ parity.
vertical
horizontal
random
binary - ANS-horizontal
The CRC error-detection method treats the packet of data to be transmitted as a large
polynomial.
True/False - ANS-True
The ____________________ layer of the OSI model is responsible for taking data from the
network layer and transforming it into a cohesive unit called a frame. - ANS-data link
The top layer in the OSI model is the ____________________ layer, where the application
using the network resides.- ANS-application
ASCII is a data code rarely used in the world.
True/False - ANS-False
When traveling through any type of medium, a signal always experiences some loss of its power
due to friction. This loss of power, or loss of signal strength, is called ____.
amplification
friction
decibel
attenuation - ANS-attenuation
Cells, in a cellular telephone system, can range in size from one-half mile in radius to ____
miles in radius.
25
35
50
70 - ANS-50
The popular GPS devices that people use to find directions while driving use which type of
satellite system?
LEO
Midterm: Question Bank
_ is the transmission of multiple signals on one medium.
Multiplexing
Codec
Modem
Package - ANS-Multiplexing
Data is information that has been translated into a form that is more conducive to storage,
transmission, and calculation.
True/False - ANS-True
____________________ are the electric or electromagnetic impulses used to encode and
transmit data.- ANS-signals
The ____________________ of a signal is the position of the waveform relative to a given
moment of time, or relative to time zero.- ANS-phase
____________________ satellites are found 22,300 miles from the Earth and are always
positioned over the same point on Earth. - ANS-GEO
When a light signal inside the cable bounces off the cable wall and back cable, this is called
refraction
reflection
blinking
friction - ANS-reflection
On occasion, a company will create a protocol that, while not an official standard, becomes so
popular that other companies start using it.
True/False - ANS-True
The ____ component of USB strictly specifies the exact dimensions of the interface's
connectors and cabling.
procedural
functional
mechanical
electrical - ANS-mechanical
Cell phones are an example of dynamically assigned channels.
True/False - ANS-True
, 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.
complete
random
lossy
lossless - ANS-lossy
Longitudinal parity is sometimes called longitudinal redundancy check or _____ parity.
vertical
horizontal
random
binary - ANS-horizontal
The CRC error-detection method treats the packet of data to be transmitted as a large
polynomial.
True/False - ANS-True
The ____________________ layer of the OSI model is responsible for taking data from the
network layer and transforming it into a cohesive unit called a frame. - ANS-data link
The top layer in the OSI model is the ____________________ layer, where the application
using the network resides.- ANS-application
ASCII is a data code rarely used in the world.
True/False - ANS-False
When traveling through any type of medium, a signal always experiences some loss of its power
due to friction. This loss of power, or loss of signal strength, is called ____.
amplification
friction
decibel
attenuation - ANS-attenuation
Cells, in a cellular telephone system, can range in size from one-half mile in radius to ____
miles in radius.
25
35
50
70 - ANS-50
The popular GPS devices that people use to find directions while driving use which type of
satellite system?
LEO
