Different modes are not encryption. In some countries it is too expensive to do the test. As a young ham, myself and another member of our club were rebuked for what we thought was a clever workaround to a persistent jammer. Australian amateur licences issued to japanese amateur operators who hold a telegraph or telephone class certificate will have the following special condition attached. You obviously haven’t been paying close attention to bugs bunny if you think that he’s a magic shelter. I know a local (non us) ve that successfully got his wife through all exams up to extra.
Act on what you’ve learnt