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CWNP CWISA-103 Exam - Topic 3 Question 14 Discussion

Actual exam question for CWNP's CWISA-103 exam

Question #: 14
Topic #: 3

[All CWISA-103 Questions]

How does OFDMA differ from OFDM?

ASubcarriers of OFDMA can contain data destined for a different receiver

BOFDMA offers greater range by using multiple channels at once

COFDMA allows multiple devices to transmit simultaneously on the same frequency

DOFDMA uses multiple radios to achieve higher throughput

Show Suggested Answer

Suggested Answer: C

OFDM vs. OFDMA:

OFDM (Orthogonal Frequency-Division Multiplexing):Divides a channel into multiple subcarriers for data transmission.

OFDMA (Orthogonal Frequency-Division Multiple Access):Extends OFDM by allowing multiple users to share subcarriers simultaneously, improving efficiency and spectral utilization.

Reference

OFDM:https://en.wikipedia.org/wiki/Orthogonal_frequency-division_multiplexing

OFDMA:https://en.wikipedia.org/wiki/Orthogonal_frequency-division_multiple_access

by Sherell at May 28, 2026, 12:42 PM

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Destiny

4 days ago

I feel like I saw something about OFDMA using subcarriers for different receivers in a practice test, but I can't recall the details.

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Diego

10 days ago

I remember practicing a question about how OFDMA improves efficiency by letting different users transmit at the same time. So, I think option C sounds right.

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Erinn

15 days ago

I think OFDMA is about allowing multiple users to share the same channel, but I'm not entirely sure how that differs from OFDM.

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