ITE 221 FINAL [2026] | Question and Answer | UPDATED ACTUAL | A+ VERIFIED ANSWERS AND FINAL REVIEW

ITE 221 FINAL [2026] | Question and Answer | UPDATED
ACTUAL | A+ VERIFIED ANSWERS AND FINAL REVIEW
• The _________________ of a sine wave is measured in degrees, with 0 degrees
representing the beginning of the wave's cycle and 360 degrees representing the
end. -✓✓ ANSWER: Phase


• A wave with encoded bits is called a (n) ___________________ wave because it
transports bits from one place to another. -✓✓ ANSWER: Carrier


• A (n) ______________ signal wave uses the full range of a carrier wave
characteristics to encode continuous data values. -✓✓ ANSWER: Analog


• The term ____________ refers to changes to the data signal caused by
interaction with the communication channel. -✓✓ ANSWER: Distortion


• The FM method hold frequency constant while varying amplitude to represent
data


True

False -✓✓ ANSWER: False


• Phase is a wave characteristic that's fundamental the same as amplitude or
frequency


True

False -✓✓ ANSWER: False

, • Circuit switching is inefficient for most data transmission setting because few
users require high data transmission capacity continuously.


True

False -✓✓ ANSWER: True


• A complete ____ of sine wave follows its full range from zero to positive peak,
back to zero, to negative peak, and then back to zero again.
a. Cycle
b. Wave
c. Crest

d. Trough -✓✓ ANSWER: a. Cycle


• ________ represents bit values as specific wave amplitudes.


a. Frequency modulation
b. Polar modulation
c. Amplitude modulation

d. Phase modulation -✓✓ ANSWER: c. Amplitude modulation


• The ______________ transmits data between computer systems components. -
✓✓ ANSWER: data bus