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As shown in the figure, RI, R, R3, and R4 all belong to OSP area 0, and the cost value of the link is listed in the figure. The LoopbackO interfaces of R1, R2, R3, and R4 have been advertised into OSPF. R1, R2, R3, and R4 use Loopback0 as the connection interface to establish an IBGP peer relationship. R1, R2, and R3 are clients of R4. The directly connected network segment 172.20.1.4/32 of R4 has been advertised into the BGP protocol.
Judging from the above information, regarding the traffic trend of R1 accessing 172.20.1.4/32, which of the following descriptions are correct? (Multiple choice)
- A . If R3 is configured with Stub router on-startup, packets will be lost when R3 is powered off, and no packets will be lost during R3 startup.
B. The preferred route is R1-R2-R4
C. During the two processes of power failure and startup of R3, there will be packet loss
D. The preferred route is R1-R3-R4
Suggested Answer: AD
Posted : 09/01/2023 9:36 am