Choose a reputable communication test to take. For a job, your employer will likely provide you with one to take. You can also find such tests through your university career center or through reputable organizations or publications, such as Psychology Today.
Concentrate on the meaning of each question. While some communication tests are timed, meaning you can't take too much time on each question, make sure you understand what the question is asking you before answering.
Answer all questions truthfully. Your taking of the communication test will not be effective if you do not answer the questions truthfully. Even if you know what the better answer is, give the answer that more accurately describes your ability to communicate.
Read your score thoughtfully. The communication test will then give you a score based on how you answered the questions. Each test will have different results criteria, so read your results carefully. If the results don't seem to match what you believe about yourself, consider taking the test again and giving more accurate answers so that your communication skills can be more effectively analyzed.