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Exam 200-355 topic 1 question 290 discussion

Actual exam question from Cisco's 200-355
Question #: 290
Topic #: 1
[All 200-355 Questions]

Which physical layer encoding technology is common to both the IEEE 802.11g and the IEEE 802.11a standards?

  • A. BPSK
  • B. CCK
  • C. DSSS
  • D. OFDM
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Suggested Answer: D 🗳️
by leland at Sept. 16, 2019, 2:02 a.m.

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KZYL
5 years, 5 months ago
OFDM BPSK modulation encoding
upvoted 1 times
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Coolbreeze
5 years, 9 months ago
mueller is right. D. OFDM is correct.
upvoted 3 times
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mueller
5 years, 9 months ago
D. OFDM is correct: https://en.wikipedia.org/wiki/IEEE_802.11
upvoted 3 times
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leland
5 years, 9 months ago
I think A is correct. OFDM is a transmission method that 802.11a and 802.11g both use (technically g uses ERP-OFDM, pp 52-54) BPSK is a modulation technique converting bits to radio waves (physical layer) that 802.11a and 802.11g also both share, with BPSK ½ 6Mbps, and BPSK ¾ 9 Mbps.
upvoted 2 times
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