Refer to the exhibit. A network administrator tries to test the connectivity between routers R1 and R2, but the attempt to ping is unsuccessful. Based on the show ip interface brief command outputs, what could be the possible cause of the problem?

I'm afraid you are not likely to get an answer to this question, because nobody on Blurtit can see the exhibit you mention. This looks like a question that can only be answered by referring to the course material, so you may have to go to your supervisor and ask for help here. Or you could try another question, giving as much information about the exhibit as you can or including a link to any visuals.