Remain calm. The test is designed to go after a lot of different skill levels. So if you don’t understand one just realize it might be at the end of your particular skill level. However, there are some tips to help answer questions that you might not know.
First, you can ask the tester to repeat themselves. You can also ask the tester to rephrase the question in another way that you might understand. If you still don’t understand, follow this process.
Admit that you don’t understand. Say something like, “Honestly, I don’t know because . . .” However, it’s very important when you talk about the ‘because.’ Don’t say something like, “Because I don’t know what that word means.” Instead what you’re trying to say is you don’t know, you can’t answer the question because you don’t know the answer to it even if the question was in your native language. You simply don’t have the knowledge to answer the question. So admit that. Explain why.
And then give your best guess. Say something like, “Honestly, I don’t know because . . . However, if I had to guess I would say that . . .” And hopefully you can get a few points off a question that you don’t completely understand.