Running the command on the router and its display information is as follows:
<RTA>displaisis brief
ISIS (1) Protocol Brief Information:
network-entit:
01.1111.1111.1111.00
is-level: level-1-2
cost-ste: narrow
preference: 15
Lsp-length receive: 1497
Lsp-length originate: level-1 1476
level-2 1476
maximum imported routes number: 10000
Timers:
lsp-max-age: 1200
lsp-refresh: 900
Interval between SPFs: 10
From the above information, we can know that RTA______.

In the IS-IS network shown in the figure, RTA, RTC, RTD, and RTE establish Level-2 adjacency with each other; RTB, RTA, and RTC establish Level-1 adjacency. After the reasons of each router are stable, RTB selects the next hop as ______ when accessing 192.168.14.1.
If RTC adds the following configuration at this time:
RTC-isis-1] import-route isis level-2 into level-1
Then RTB selects the next hop as ______ when accessing 192.168.4.1 again.

Among the following routing protocols, the one belonging to the IGP is _____, and the one that uses the path vector algorithm is _______.

V In the network as shown, the correct IP addresses have been configured on RTA, RTB and RTC.
Execute the following commands on the RTA, RTB and RTC routers respectively:
RTA-Serial5/0] ospf dr-priorit100
RTA] ospf 1 router-id 1.1.1.1
RTA-ospf-1] area 0
RTA-ospf-1] peer 192.168.1.2
RTA-ospf-1] peer 192.168.1.3
RTA-ospf-1-area-0.0.0.0] network 192.168.1.0 0.0.0.2
RTB] ospf 1 router-id 2.2.2.2
RTB-ospf-1] area 0
RTB-ospf-1] peer 192.168.1.1
RTB-ospf-1-area-0.0.0.0] network 192.168.1.0 0.0.0.255
RTC] ospf 1 router-id 3.3.3.3
RTC-ospf-1] area 0
RTC-ospf-1-area-0.0.0.0] network 192.168.1.0 0.0.0.255
Judging from the above configuration, ________

The RIP protocol is enabled on a router, and the priority is 10; the OSPF protocol is enabled at the same time, and the priority is 100. If two protocols learn the route 10.0.0.0/8 at the same time, the metric values ​​are 1 (hop count) and 100 (cost value) respectively, and the next hops are 1.0.0.1 and 1.0.0.2 respectively.
After the router receives the packet with the destination address 10.0.0.1, what should it do?