This interview question is similar to previous question but focuses on which tests Not to be automated and left for manual testing. Possible answers can be:

Usability Testing – at times this can be an impossible task to perform by automation as the computer cannot efficiently judge if the system is of any use to its users

Tests that only need to be executed once – unless the same test needs to be executed for a large dataset then it makes sense to automate

Tests without predictable results – test automation should give us confidence in the results of the tests. If there are intermittent failures then the tests cannot be reliable and cannot be dependent on

Tests that need to be verified visually

Tests that need to be executed quickly. At first, writing an automated test takes longer. If we want a quick check, we should test manually, however, if that test is a good one which should be run regularly, then it should be automated in time