VRP supports OSPF multi-process. If the process number is not specified when OSPF is enabled, the process number used by default is ().

The configuration information of a certain interface of the switch is shown in the figure. When the data frame of which VLAN TAG is carried by this port, the VLAN TAG is stripped?

If the Length/Type of an Ethernet data frame is equal to 0x8100, what might be the payload of this data frame?

When the router is powered on, it will read the configuration file from the default storage path to initialize the router. If there is no configuration file in the default storage path, what will the router use for initialization? ()

The last option field (option) of IPv4 is variable-length optional information. The maximum length of this field is?