Which of the following options is correct ()?

SSID Technology can divide a wireless local area network into several sub-networks that require different authentication. Each sub-network requires independent

authentication. Only users who pass the authentication can enter the corresponding sub-network to prevent unauthorized users from entering This network.

BSSID Is actually AP of MAC Address, used to identify AP Managed BSS , In the same AP Inside BSSID and SSID One-to-one mapping.

Users can be in different SSID Roaming is realized below.

in a ESS Inside SSID Is the same, but for ESS Within each AP Corresponding BSSID Are not the same. If oneAP Can support multiple at the

same time SSID , Then AP Will assign different BSSID To correspond to these SSID .