Which of the following statements about the N+1 backup networking shown in the figure are TRUE? (Multiple Choice)
A . Standby AC3 must be on the same Layer 2 network as active AC1 and active AC2.
B . Basic WLAN service configurations on standby AC3 must be the same as those on active AC1 and active AC2 to ensure that APs can obtain the correct configuration after an active/standby switchover of ACs.
C . AP-specific priorities can be configured on active and standby ACs respectively so that APs can select the corresponding active AC based on the priority configurations on ACs.
D . Corresponding MAC address whitelists can be configured on active ACs to ensure that APs select the correct active AC and go online on the A
Answer: BCD