In the switching network shown in the figure, all switches have enabled the STP protocol.

SWA was selected as the root bridge. According to the information in the figure, the ______ port should be set to the Forwarding state. (Multiple choice)

In the router's routing table, there is an entry for a route with a network segment of 10.168.100.0/24, with a Cost of 20 and a Preference of 255, so which of the following statements about this route are correct?

It is required to set a subnet mask to divide a Class B network 172.16.0.0 into 30 subnets, and each subnet should contain as many hosts as possible, so the subnet mask should be _____. (Dotted decimal format) slightly

The IPv4 address includes the network part, host part, subnet mask, etc. Correspondingly, the IPv6 address contains ______.

The role of FTP data connection includes ______. (Multiple choice)