The characteristics of the distance vector routing protocol include ________. (Choose one or more)

In the network shown in the figure, the default next hop of PTA is RTC, and the PBR configuration is as follows:
polic-based-route pbr_a permit node 10
if-match acl 3000
appldefault output-interface serial 2/0
polic-based-route pbr_a dennode 20
According to the above configuration, what is wrong about the data stream matching Acl 3000 on RTA?

The RIP protocol is enabled on a router, the process number is 1, and the priority is 10; at the same time, the OSPF protocol is enabled, the process number is 100, and the priority is 100. If two processes learn the route of the 10.0.0.0/8 network segment at the same time, the metric values are 1 (hop count) and 100 (cost value), and the next hop is 1.0.0.1 and 1.0.0.2 respectively.
After the router receives a packet with a destination address of 10.0.0.1, how to deal with it?

Among the following routing protocols, _______ supports manual route aggregation. (Choose one or more)

Each OSI network device is networked as shown in the figure. There are ______ ESs in the OSI network. (Host)