Network+ Guide to Networks Test Questions with Correct Answers Already Passed
Transmit - Answers To issue signals along a network medium.
Transmission - Answers the process of transmitting or the progress of signals after they have been
transmitted.
Transceiver - Answers A device that transmit and receives signal
Voltage - Answers measurement of the strength of an electrical signal;
Electrical current pressure
analog - Answers characterized by four fundamental properties: amplitude, frequency, wavelength, and
phase.
amplitude - Answers is a measure of its strength at any given point in time
frequency - Answers is the number of times that a wave's amplitude cycles from its starting point.
hertz (Hz) - Answers cycles per second
wavelength - Answers the distance between corresponding points on a wave's cycle.
Digital Signals - Answers Pulses of voltages
Positive voltage represents a 1
Zero voltage represents a 0
Binary system - Answers 1s and 0s represent information
Bit (binary digit) - Answers Possible values: 1 or 0
Digital signal pulse
Phase - Answers refers to the progress of a wave over time in relationship to a fixed point.
Overhead - Answers Describe Nondata information
Required for proper signal routing and interpretation
Modem - Answers Accomplishes translation
Modulator/demodulator
Data modulation - Answers Technology modifying analog signals
Make data suitable for carrying over communication path
, Carrier wave - Answers Combined with another analog signal
Produces unique signal -Transmitted from one node to another
Preset properties
Purpose: Convey information
Information wave (data wave) - Answers Added to carrier wave
Modifies one carrier wave property
Frequency modulation (FM) - Answers Carrier frequency modified
By application of data signal
Amplitude modulation - Answers Carrier signal amplitude modified
By application of data signal
Simplex - Answers Signal transmission: one direction
Half-duplex transmission - Answers Signal transmission: both directions
One at a time
One communication channel
Shared for multiple nodes to exchange information
Full-duplex - Answers Signals transmission: both directions simultaneously
Used on data networks
Channel - Answers Distinct communication path between nodes
Separated physically or logically
Full duplex advantage - Answers Increases speed
Multiplexing - Answers Multiple signals
Travel simultaneously over one medium
Subchannels - Answers Logical multiple smaller channels
Multiplexer (mux) - Answers Combines many channel signals
Demultiplexer (demux) - Answers Separates combined signals
Transmit - Answers To issue signals along a network medium.
Transmission - Answers the process of transmitting or the progress of signals after they have been
transmitted.
Transceiver - Answers A device that transmit and receives signal
Voltage - Answers measurement of the strength of an electrical signal;
Electrical current pressure
analog - Answers characterized by four fundamental properties: amplitude, frequency, wavelength, and
phase.
amplitude - Answers is a measure of its strength at any given point in time
frequency - Answers is the number of times that a wave's amplitude cycles from its starting point.
hertz (Hz) - Answers cycles per second
wavelength - Answers the distance between corresponding points on a wave's cycle.
Digital Signals - Answers Pulses of voltages
Positive voltage represents a 1
Zero voltage represents a 0
Binary system - Answers 1s and 0s represent information
Bit (binary digit) - Answers Possible values: 1 or 0
Digital signal pulse
Phase - Answers refers to the progress of a wave over time in relationship to a fixed point.
Overhead - Answers Describe Nondata information
Required for proper signal routing and interpretation
Modem - Answers Accomplishes translation
Modulator/demodulator
Data modulation - Answers Technology modifying analog signals
Make data suitable for carrying over communication path
, Carrier wave - Answers Combined with another analog signal
Produces unique signal -Transmitted from one node to another
Preset properties
Purpose: Convey information
Information wave (data wave) - Answers Added to carrier wave
Modifies one carrier wave property
Frequency modulation (FM) - Answers Carrier frequency modified
By application of data signal
Amplitude modulation - Answers Carrier signal amplitude modified
By application of data signal
Simplex - Answers Signal transmission: one direction
Half-duplex transmission - Answers Signal transmission: both directions
One at a time
One communication channel
Shared for multiple nodes to exchange information
Full-duplex - Answers Signals transmission: both directions simultaneously
Used on data networks
Channel - Answers Distinct communication path between nodes
Separated physically or logically
Full duplex advantage - Answers Increases speed
Multiplexing - Answers Multiple signals
Travel simultaneously over one medium
Subchannels - Answers Logical multiple smaller channels
Multiplexer (mux) - Answers Combines many channel signals
Demultiplexer (demux) - Answers Separates combined signals
