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Question 105 - CWNA-109 discussion

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You are evaluating a connection that states the data rate is 150 Mbps. What is the expected throughput of this connection?

A.
Less than 150 Mbps because of 802.11 overhead and contention
Answers
A.
Less than 150 Mbps because of 802.11 overhead and contention
B.
54 Mbps because that is the actual maximum throughput of an 802.11 connection
Answers
B.
54 Mbps because that is the actual maximum throughput of an 802.11 connection
C.
More than 150 Mbps because of compression
Answers
C.
More than 150 Mbps because of compression
D.
150 Mbps because the data rate is equal to the throughput
Answers
D.
150 Mbps because the data rate is equal to the throughput
Suggested answer: A

Explanation:

The data rate of a signal is the speed that the data bits in individual 802.11 data frames are sent, but it does not account for the actual amount of data that can be transmitted over time. The throughput of a connection is the flow of information over time, which is affected by various factors such as data encoding, modulation, encryption, airtime utilization, noise levels, interference, etc. Therefore, the throughput is always lower than the data rate.According to one of the web search results1, the actual throughput is normally 60-70 percent of the supported data rates. So, for a connection with a data rate of 150 Mbps, the expected throughput would be around 90-105 Mbps.

asked 16/09/2024
Elyse Martinez
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