CompTIA Network+ N10-006 Q137

A user with an 802.11n WLAN card is connected to a SOHO network and is only able to connect at 11 Mbps with full signal strength. Which of the following standards is implemented on the network?

A. 802.11a
B. 802.11ac
C. 802.11b
D. 802.11g

Correct Answer: C
Section: Industry standards, practices, and network theory

Explanation:
802.11 is a set of IEEE standards that govern wireless networking transmission methods. The 802.11 standards commonly used today to provide wireless connectivity in home or office wireless networks are 802.11a, 802.11b, 802.11g, 802.11n and 802.11ac.
802.11b supports speeds up to 11Mbps and uses the 2.4GHz frequency.
In this question, the user is using an 802.11n WLAN card. Although the 802.11n WLAN card can support speeds up to 300Mbps, the user is only able to connect at 11Mbps because the user is connected to a wireless network configured to use 802.11b.