As shown in the picture.

The figure is an OSI routing network, the route between RTC and RTE in the figure should be _______ route.

There is definitely no LSA of type ______ in the OSPF stub area.

Run commands on the router and display information as follows:

From the above information, we can know that ______ IS-IS Level-1 routes have been added to the RTB routing table.

Among the following states of the OSPF protocol, ______ is a stable state.

In the topology shown in the figure, the following configurations are performed on RTA, RTB, and RTC:
RTA]ospf 1
RTA-ospf-1]area 1
RTA-ospf-1-area-0.0.0.1]network 10.0.0.0 0.0.0.255
RTB]ospf 1
RTB-ospf-1]area 1
RTB-ospf-1-area-0.0.0.1]network 10.0.0.0 0.0.0.255
RTB-ospf-1-area-0.0.0.1]area 0
RTB-ospf-1-area-0.0.0.0]network 20.0.0.0 0.0.0.255
RTC]ospf 1
RTC-ospf-1]area 0
RTC-ospf-1-area-0.0.0.0]network 20.0.0.0 0.0.0.255
RTC-ospf-1-area-0.0.0.0]area 2
RTC-ospf-1-area-0.0.0.2]stub
RTC-ospf-1-area-0.0.0.2]network 30.0.0.0 0.0.0.255
How to configure if RTD can learn route 10.0.0.0/24?