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CWNP CWISA-102 Exam - Topic 3 Question 37 Discussion

How is ASK modulation different from FSK modulation?
A) ASK varies the amplitude of the signal while FSK shifts its frequency
B) FSK is more sensitive to noise than ASK
C) ASK does not work at high frequencies
D) ASK can carry more data than FSK

CWNP CWISA-102 Exam - Topic 3 Question 37 Discussion

Actual exam question for CWNP's CWISA-102 exam
Question #: 37
Topic #: 3
[All CWISA-102 Questions]

How is ASK modulation different from FSK modulation?

Show Suggested Answer Hide Answer
Suggested Answer: A

Key Modulation Differences:

ASK (Amplitude Shift Keying):Digital data is represented by changes in the amplitude (strength) of a carrier wave.

FSK (Frequency Shift Keying):Digital data is represented by changes in the frequency of a carrier wave.

References

ASK:https://en.wikipedia.org/wiki/Amplitude-shift_keying

FSK:https://en.wikipedia.org/wiki/Frequency-shift_keying


by Melissia at Aug 15, 2025, 03:16 AM

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Britt
8 months ago
FSK is definitely more sensitive to noise than ASK, no doubt!
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Luis
9 months ago
I heard ASK can handle more data, but is that true?
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Isaiah
9 months ago
Totally agree, that's the main difference!
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Noe
9 months ago
I thought FSK was better in noisy environments?
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Janna
9 months ago
ASK varies the amplitude of the signal while FSK shifts its frequency.
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Tequila
9 months ago
I vaguely recall that ASK can struggle at higher frequencies, but I can't remember the details. Is that what C is suggesting?
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Jacob
10 months ago
I practiced a question similar to this, and I think ASK can handle higher data rates, but I'm not confident about that.
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Felix
10 months ago
I'm not really sure about the noise sensitivity part, but I feel like FSK might be more robust than ASK.
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Layla
10 months ago
I remember that ASK changes the amplitude, while FSK changes the frequency. So, I think A is correct.
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Tamesha
10 months ago
I remember learning that ASK can carry more data than FSK, but I'm not 100% certain about that. I'll try to reason through the differences between the two modulation techniques to figure out the best answer.
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Tiffiny
10 months ago
Okay, let me see. I think ASK doesn't work well at high frequencies, but I'm not totally sure about that. I'll make sure to read the question closely and eliminate the options I'm not confident about.
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Tresa
11 months ago
Hmm, I'm a bit unsure about the specifics here. I know one of them is more sensitive to noise, but I can't remember which one. I'll have to think this through carefully.
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Isabella
11 months ago
I'm pretty confident I know the difference between ASK and FSK modulation. I'll start by recalling that ASK varies the amplitude of the signal, while FSK shifts its frequency.
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Fannie
11 months ago
I think ASK varies the amplitude of the signal while FSK shifts its frequency.
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