I am also facing same issue. I am getting partial marks or no marks even if I get the right output. I contacted them and they said it is some configuration mistake from my end and they won't reveal what it is. I am really clueless what should be corrected next time to get the marks. Only option is reschedule the exam and try different other things to achive the tasks and check if it is gets the score.
Same thing here it seems.. I have failed two tries, after checking for the outputs multiple times for correctness. At this point I have no idea what I have done wrongly; I would not be able to take action to learn information to improve my next score, even if I wanted to.
What seems most incredible is that for my first try, I scored 100% on " Troubleshoot application deployment issues" section. However, for my second run, i scored a 0%. Surely my troubleshooting has improved with experience from the first ( and deployments more robust)?
In the process of contacting support, hopefully I can at least learn what went wrong; Its rather frustrating otherwise to say the least.