Key words: Hardware test engineer interview
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When it comes to interview experience, the key is to articulate your strengths:
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1, to express their professional ability. Have a comprehensive understanding of what you have learned and what you have mastered. It's not just what you do, it's how you explain it.
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2, highlight their enterprising spirit. Because learning is always endless, each stage can master a measurement method.
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3, good at communicating with people, able to properly handle interpersonal relations.
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4. Be confident. This is a psychological effect, and a positive attitude has a unique advantage in accepting work and tasks.
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In general, the interview form has three sides: one is the technical side, asking about professional knowledge, students or what things have been done during the work. The second is a group meeting, in which a problem is discussed in two groups, and then the group gives an explanation. The third is the final interview, where a manager-level person chats with you. There's usually a personality test after the final interview.
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The interview questions of hardware test engineers from different companies are different. The following takes the written test questions and answers of Huawei hardware test engineers as an example.
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1, the common signal integrity problems are: overshoot, (), (), (). (3 required);
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2, multiple choice: The capacitor most suitable for filtering high-frequency noise is: A. tantalum capacitor B. Aluminum electrolysis C. Ceramic capacitor;
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3, the difference between linear power supply and switching power supply (), (), ();
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4, EMC indicators: (write 5 requirements);
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5, OC, OD is what circuit? What should I pay attention to in the output?
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6, oscilloscope trigger mode (required to write 3)? Measure height at the same time. Which triggering mode should be used for the two low-frequency signals?
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7, the latch effect is a unique failure characteristic of the device?
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8. What is the difference between DDR SDRAM and SDRAM? DDR typical circuit;
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9. What is the 3W principle of PCB wiring? The principle of differential signal routing;
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10, product reliability indicators (required to write 3), how do you ensure the reliability of the product in the design?