In the network shown in the figure, the default next hop of PTA is RTC, and the PBR configuration on PTA is as follows:
polic-based-route pbr_a permit node 10
if-match packet-length 64 100
applip-address next-hop 11.0.0.2
if-match packet-length 101 1000
applip-address next-hop 12.0.0.2
polic-based-route pbr_a dennode 20
Assuming that the strategy has been successfully applied, what is wrong with the data flow on RTA?

Regarding the BGP aggregation function, which of the following statements are correct?

As shown in the figure, RTA and RTB are located in AS 100. The two establish IBGP neighbors. There is no route for RTA and RTC Internet segments on RTB: RTC is located in AS 200, and EBGP neighbors are established with RTA.
The main configuration is as follows:
RTA]
bgp 100
peerRTC as-number 200
peerRTB as-number 100
RTB]
bgp 100
peerRTA as-number 100
RTC]
bgp 200
peerRTA as-number 100
RTC cannot send the 192.168.1.0/24 route to RTA, but the 92.168.1.0/24 route does not appear in the IP 1 routing table of RTB.
To solve the above problems, what adjustments should be made in the configuration?

In the topology shown in the figure, execute the following commands on RTA:
RTA-ospf-1] default-route-advertise
The default route cannot be observed in the routing table of the RTC router. The reason for the impossible is ______

The advantages of modular network architecture include ______. (Choose one or more)