Which of the following states indicates that the OSPF neighbor relationship has been established?
The router ID of the OSPF process takes effect immediately after being changed.
In RSTP, an edge port becomes a common STP port after receiving a configuration BPDU.
On the network shown in the figure, host A logs in to router A through Telnet and obtains the configuration file of router B through FTP on the remote CLI. How many TCP connections exist on router A?