Which of the following data packets is the OSPF protocol encapsulated in?

When the administrator configures the DHCP server, which of the following commands configures the lease time to be the shortest?
Ip pool pool1
Network 10.10.10.0 mask 255.255.255.0
Gateway-list 10.10.10.1

The static MAC address table is reset in the system, after the interface board is hot swapped or the interface board is reset, saved entries are not Iost.

In the RSTP standard, the port that the switch directly connects to the terminal instead of the other bridge is defined as ().

Al[ switches in the following figure have STP protocol enabled, if the path cost of all ports is 200_ What is the path cost value included in the configuration BPDU received by the GO/0/4 port of SWD?