1. In the diagram below the networks connect to R1, R2 and R3 share their information via RIP on the serial links shown in the diagram below. Your organisation would like to provide a backup path between R1 and R3 in the event that R2 fails.

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172.16.10.0/24 .2 Switch0 INTERNET .2 .1 209.165.200.0/24 .1 R2 .1 192.168.1.0/30 192.168.2.0/30 .2 .1 192.168.3.0/24 .2 172.16.20.0/24 Switch1 PCO .10 PC1 .10 172.16.10.0/24 .2 Switch0 INTERNET .2 .1 209.165.200.0/24 .1 R2 .1 192.168.1.0/30 192.168.2.0/30 .2 .1 192.168.3.0/24 .2 172.16.20.0/24 Switch1 PCO .10 PC1 .10