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Question 78 - CWNA-109 discussion

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Which one of the following 802.11 PHYs is more likely to be used in an industrial deployment but not likely to be used in standard office deployments?

A.
S1G
Answers
A.
S1G
B.
VHT
Answers
B.
VHT
C.
OFDM
Answers
C.
OFDM
D.
HT
Answers
D.
HT
Suggested answer: A

Explanation:

S1G is one of the 802.11 PHYs that is more likely to be used in an industrial deployment but not likely to be used in standard office deployments. This is because S1G stands for Sub-1 GHz, which means it operates in the frequency bands below 1 GHz, such as 900 MHz and 868 MHz. These bands offer better penetration and range than the higher frequency bands used by other 802.11 PHYs, such as 2.4 GHz and 5 GHz. This makes S1G suitable for industrial applications that require robust and reliable wireless communication in harsh environments, such as factories, warehouses, mines, and smart grids. S1G also supports low-power and low-data-rate devices, such as sensors, actuators, and meters, which are common in industrial Internet of Things (IoT) scenarios.VHT, OFDM, and HT are other 802.11 PHYs that are more commonly used in standard office deployments, as they offer higher data rates and capacity than S1G, but have lower range and penetration.Reference:CWNA-109 Study Guide, Chapter 3: Radio Frequency Technologies, page 751

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asked 16/09/2024
Ahmed Otmani Amaoui
30 questions
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