There seem to be two identical problem

[hylinux1024]

[eric-keller]

Thanks for pointing that out. The question is supposed to be "Which of the following list two valid veth pairs?" I'm not sure how it got messed up, but I think I fixed it. You may need to submit the quiz then take it again to get a refresh, or just know what the question is so you can answer it correctly - the answer didn't change. Thanks again.