Final answer:
The passing grade of the QA Phase II examinations is not specified, and it may vary. The practical examination must be administered by a licensed operator.
Step-by-step explanation:
In order to pass the QA Phase II examinations, a passing grade of a certain percentage is required. However, the exact passing grade percentage is not mentioned in the given information. It would depend on the specific requirements of the QA Phase II examinations, which could vary based on the institution or program.
On the other hand, the practical examination is required to be administered by a licensed operator. This means that someone who holds a valid operator's license or certification is responsible for conducting and evaluating the practical examination.
It is important to note that the given information does not provide specific details about the passing grade percentage or the requirements of the practical examination. Therefore, it would be necessary to refer to the guidelines or instructions provided by the relevant authority or institution for accurate and up-to-date information.