Explanation
PC1 would not receive a response. When PC1 pings the IP address 172.16.1.2, the packet would reach R2 but R2 does not have information related to the network 192.168.1.0 to which PC1 belongs. So the response packet to PC1 would be dropped. This information has to be provided on R2 with a static route for the network 192.168.1.0 / 24 or using dynamic routing protocols between R1 and R2.
Question 18
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