WGU D413 TELECOMMUNICATION AND WIRELESS EXAM WITH VERIFIED ANSWERS

WGU D413 TELECOMMUNICATION AND WIRELESS
EXAM WITH VERIFIED ANSWERS


What do Smart Card Specifications follow?
Defined by ISO/IEC 7816, they are specifications for
smart cards.
What technology is associated with Modems?
Modems are devices used for modulating and
demodulating signals for communication purposes.
What Type of multiplexing is OFDM?Orthogonal
frequency-division multiplexing
Digital
What Type of multiplexing is TDM? Time-division
multiplexing (TDM)
Digital
What Type of multiplexing is DWDM? Dense
wavelength-division multiplexing (DWDM)
Optical

,What Type of multiplexing is FDM?Frequency-
division multiplexing
Analog/Digital
What Type of multiplexing is ATDM?Asynchronous
Time Division Multiplexing
Digital
What Type of multiplexing is STDM?Synchronous
Time Division Multiplexing
Digital
What Type of multiplexing is CDM?code-division
multiplexing (CDM)
Digital
What is the Basic principle of OFDM?Orthogonal
frequency-division multiplexing
Orthogonal Subchannels
What is the Basic principle of TDM?
Time Slots
What is the Basic principle of WDM?

, Different Wavelengths
What is the Basic principle of DWDM?
Dense set of wavelengths
What is the Basic principle of FDM?
Frequency bands
What is the Basic principle of STDM?
Fixed and Synchronized time invervals
What is the Basic principle of ATDM?
Variable time intervals
What is the Basic principle of CDM?
Unique Codes for each channel
cyclic redundancy check (CRC)
Based on the same principle for error detection as a
parity check but uses mathematical algorithms to
deter-mine if any bits are corrupt.
Resistance
Opposition to direct current
Ω (ohm)