Should be A+B. D would used to only trigger an autosupport, but then you have to run command B to see the results.

We going to consider that "D" is for run an autosupport , then the correct answers are A and B. https://kb.netapp.com/onprem/ontap/os/How_to_troubleshoot_autosupport_issues

There are 3 right answers for this. A. B. D. I think the correct answer is A. and B. A. will show you if an auto support has been sent and weather its successful or failed. B. auto support check show will show you if Http/SMTP/ and your configuration is correct. D. This will try and send an auto support but this command will not show you if it has failed/worked..

B is wrong, the right syntax is:system node autosupport status check show https://docs.netapp.com/us-en/ontap-cli-9111/system-node-autosupport-check-show.html B and D are correct

http://docs.netapp.com/ontap-9/topic/com.netapp.doc.dot-cm-cmpr-970/system__node__autosupport__history__show.html The system node autosupport history show command displays information about the 50 most recent AutoSupport messages sent by nodes in the cluster. http://docs.netapp.com/ontap-9/index.jsp?topic=%2Fcom.netapp.doc.dot-cm-cmpr-970%2Fsystem__node__autosupport__check__show.html The system node autosupport status check show command displays the overall status of the AutoSupport subsystem.

It could be A, B and D... pablogt is wrong, the command with autosupport check show does exist. So I believe the correct answers are B & D, check shows if everything is reachable, D shows if it is working correctly. A does just show if and how the data is transmitted. So I go with B & D

A & D, You can invoke a test message https://docs.netapp.com/us-en/ontap-cli-93/system-node-autosupport-invoke.html#parameters in B the correct command is system node autosupport check show-details

https://docs.netapp.com/us-en/ontap-cli-93/system-node-autosupport-history-show.html#description