If you use the "display wlan ap all" command on the AC to see that the AP repeatedly enters the image download state, what are the possible reasons? (Multiple choice)

The physical layer transmission bandwidth of the current mainstream i WiFi protocol g 802.11g is 54 Mbps, but the actual available bandwidth above the transmission layer is about?

Which rate does 802.11b support? (Multiple choice)

The 3 WX6103 main control board and the switch board are connected through the internal interface of the second layer. Regarding the correspondence between these interfaces and slots. Which of the following descriptions are correct? (Multiple choice)

In the 802.11i standard, which protocol that needs to be encrypted by hardware? so the hardware support of the network card is required.