In point-to-multipoint (PtMP) wireless transmission, the more suitable antenna type is?

The original WLAN room dividing and combining system adopts the 802.11b standard, and the AP uses WLAN dry amplifier for power amplification. Will the current power transformation be carried out to upgrade 802.11b to 802.11g, can the original indoor distributed system be directly used for dry discharge?

The maximum negotiated connection rate for 802.11a is?

When the SSID encryption type configured in the AP is WEP encryption (the password is 12345), the MAC layer authentication method is shared-key, and the password entered by the client is 54321, which of the following phenomena will occur?

During the Layer 2 registration of the Fit AP, the AP is in the Idle state on the AC. What are the possible reasons? (Multiple choice)