First: punctuality, which is an iron discipline, is not explained. If I can't do this, I don't think I should go for an interview. Generally, about 5 minutes in advance is appropriate.
Second: dress and etiquette. It's best to wear clean and tidy clothes and have good personal hygiene. Then there is the question of politeness, knocking at the door to say hello and so on. And don't interrupt the interviewer during the interview, pay attention to listening, which is also a polite performance.
Third, body language. For example, don't scratch your head during the interview and stay calm.
Fourth, during the interview, you must think twice before answering the questions raised by the interviewer. Don't answer questions with emotion. Be sure to think about the content of the interviewer's exam before answering.
Fifth, when the interview is over, when you leave, don't appear impetuous and eager to leave, or go to another appointment before the interviewer finishes the conversation. If you want to leave too early, the interviewer will think you are insincere or impatient. etc
Fifth, the relevant professional knowledge, that is, hardware facilities, depends on oneself.
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