D413 TELECOMM AND WIRELESS COMMUNICATION WGU EXAM / WGU D413
TELECOMM AND WIRELESS COMMUNICATION OBJECTIVE ASSESSMENT (OA)
FINAL EXAM AND A NEW UPDATED STUDY GUIDE 2026/2027 COMPLETE
ACCURATE EXAM ACTUAL QUESTIONS AND CORRECT DETAILED ANSWERS
(100% CORRECT VERIFIED SOLUTIONS) NEWEST UPDATED VERSION
|GUARANTEED PASS A+
Transmission technique used with wireless devices that use the 5-GHz
radio band and can achieve a data rate as high as 54 Mbps. It divides
the allotted frequency into channels similar to frequency hopping and
direct sequencing. Digital.
Answer- Orthogonal Frequency Division Multiplexing (OFDM)
An optical multiplexing technology that allows several different streams
of data to travel down the same optical fiber simultaneously.
Answer- Dense Wavelength Division Multiplexing (DWDM)
Divides the available bandwidth into frequency bands, and each band is
used for a different communication channel. Analog or Digital.
Answer- Frequency Division Multiplexing (FDM)
Which multiplexing technique transmits each signal from one input
source via a single time slot through the creation of different slots?
,Answer- Synchronous Time Division Multiplexing
Which category of multiplexing randomly allocates time slots to
different data signals depending on the rate at which they are being
generated from the source?
Answer- Asynchronous Time-Division Multiplexing
A company is developing a television network to broadcast local news
content using analog signals. Which multiplexing technique should be
used?
Answer- Frequency Division Multiplexing (FDM)
Which type of multiplexing is used to send and receive digital signals
between connected devices?
Answer- Time-division multiplexing
The radio transmission technique that subdivides the allocated
frequency range into smaller units called channels.
Answer- spread spectrum
,frequency hopping and direct sequencing
The two types of spread-spectrum transmission techniques are:
spatial multiplexing
Transmitting two or more streams of data in the same frequency
channel
An enhanced parity check that not only identifies when an error occurs
but also corrects the error.
Answer- Cyclic Redundancy Check (CRC)
Which cable realizes noise protection with the use of foil shielding?
Answer- A cable transmitting signals between 15 and 20 MHz
The receiver separates the voice wave from the carrier wave.
Answer- demodulation
What is the absolute value of a signal's greatest magnitude in
proportion to the energy that it is able to carry?
, Answer- Peak Amplitude
Multiple communications channels are consolidated and then
transmitted on light waves with different wavelengths. More common
in telecommunication systems and computer networks that use laser
systems to send light signals over fiber optic cables.
Answer- Wavelength Division Multiplexing (WDM)
Assigns a unique code to each channel, and all channels share the same
frequency band simultaneously. Digital.
Answer- Code-division multiplexing (CDM)
carrier-sense multiple access with collision avoidance (CSMA/CA)
Media access method that works much like CSMA/CD but tries to avoid,
rather than detect, collisions.
carrier-sense multiple access with collision detection (CSMA/CD)
Media access method used by Ether-net networks to control and
ensure data delivery.
TELECOMM AND WIRELESS COMMUNICATION OBJECTIVE ASSESSMENT (OA)
FINAL EXAM AND A NEW UPDATED STUDY GUIDE 2026/2027 COMPLETE
ACCURATE EXAM ACTUAL QUESTIONS AND CORRECT DETAILED ANSWERS
(100% CORRECT VERIFIED SOLUTIONS) NEWEST UPDATED VERSION
|GUARANTEED PASS A+
Transmission technique used with wireless devices that use the 5-GHz
radio band and can achieve a data rate as high as 54 Mbps. It divides
the allotted frequency into channels similar to frequency hopping and
direct sequencing. Digital.
Answer- Orthogonal Frequency Division Multiplexing (OFDM)
An optical multiplexing technology that allows several different streams
of data to travel down the same optical fiber simultaneously.
Answer- Dense Wavelength Division Multiplexing (DWDM)
Divides the available bandwidth into frequency bands, and each band is
used for a different communication channel. Analog or Digital.
Answer- Frequency Division Multiplexing (FDM)
Which multiplexing technique transmits each signal from one input
source via a single time slot through the creation of different slots?
,Answer- Synchronous Time Division Multiplexing
Which category of multiplexing randomly allocates time slots to
different data signals depending on the rate at which they are being
generated from the source?
Answer- Asynchronous Time-Division Multiplexing
A company is developing a television network to broadcast local news
content using analog signals. Which multiplexing technique should be
used?
Answer- Frequency Division Multiplexing (FDM)
Which type of multiplexing is used to send and receive digital signals
between connected devices?
Answer- Time-division multiplexing
The radio transmission technique that subdivides the allocated
frequency range into smaller units called channels.
Answer- spread spectrum
,frequency hopping and direct sequencing
The two types of spread-spectrum transmission techniques are:
spatial multiplexing
Transmitting two or more streams of data in the same frequency
channel
An enhanced parity check that not only identifies when an error occurs
but also corrects the error.
Answer- Cyclic Redundancy Check (CRC)
Which cable realizes noise protection with the use of foil shielding?
Answer- A cable transmitting signals between 15 and 20 MHz
The receiver separates the voice wave from the carrier wave.
Answer- demodulation
What is the absolute value of a signal's greatest magnitude in
proportion to the energy that it is able to carry?
, Answer- Peak Amplitude
Multiple communications channels are consolidated and then
transmitted on light waves with different wavelengths. More common
in telecommunication systems and computer networks that use laser
systems to send light signals over fiber optic cables.
Answer- Wavelength Division Multiplexing (WDM)
Assigns a unique code to each channel, and all channels share the same
frequency band simultaneously. Digital.
Answer- Code-division multiplexing (CDM)
carrier-sense multiple access with collision avoidance (CSMA/CA)
Media access method that works much like CSMA/CD but tries to avoid,
rather than detect, collisions.
carrier-sense multiple access with collision detection (CSMA/CD)
Media access method used by Ether-net networks to control and
ensure data delivery.
