Key words: Hardware test engineer interview
When it comes to interview experience, the key is to articulate your strengths:
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.
2, highlight their enterprising spirit. Because learning is always endless, each stage can master a measurement method.
3, good at communicating with people, able to properly handle interpersonal relations.
4. Be confident. This is a psychological effect, and a positive attitude has a unique advantage in accepting work and tasks.
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.
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.
1, the common signal integrity problems are: overshoot, (), (), (). (3 required);
2, multiple choice: The capacitor most suitable for filtering high-frequency noise is: A. tantalum capacitor B. Aluminum electrolysis C. Ceramic capacitor;
3, the difference between linear power supply and switching power supply (), (), ();
4, EMC indicators: (write 5 requirements);
5, OC, OD is what circuit? What should I pay attention to in the output?
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?
7, the latch effect is a unique failure characteristic of the device?
8. What is the difference between DDR SDRAM and SDRAM? DDR typical circuit;
9. What is the 3W principle of PCB wiring? The principle of differential signal routing;
10, product reliability indicators (required to write 3), how do you ensure the reliability of the product in the design?