Complete three rounds of interviews in one day: The 2020 Huawei Excellent Recruitment process is divided into three rounds, one or two rounds of technical interviews, and the third round of comprehensive interviews. There is no HR interview, and the interview is in one-to-one format.
The following is the interview experience
one side
A round of interviewers (about 40-year-old uncle, kind and talkative)
1. First introduce yourself (about 3 minutes, it is not recommended to be too short or too procrastinated)
2. Which technologies are you familiar with?
3. Multithreaded state diagram, how does the state flow?
4. Deadlock, the cause of deadlock
5. Page lock, optimistic lock, pessimistic lock?
6. How does optimistic locking ensure thread safety?
7. Have you used the thread pool, the corresponding benefits, and how to use it?
8. Two 10G files contain some URLs and the memory is only 1G. How to merge these two files to find the same URL?
10. 1000 multiple concurrent threads, 10 machines, each with 4 cores, design thread pool size.
11. Code question: Two ordered arrays, there are repeated numbers in the arrays, merge them into an ordered array, and remove the repeated numbers.
12. Talk about your own advantages.
Two sides
Second round of interviewers (women in their 30s, shrewd and capable)
1. Without self-introduction, ask directly what are the core designs of the project that you have participated in?
2. What are the java declaration types?
3. The application of java inheritance and polymorphism.
4. Write a singleton pattern in java.
5. What technologies are used in the project?
6. Talk about spring AOP and IOC.
7. The main research direction of the thesis, how is the certification in the thesis done.
8. Write a sql statement as required.
9. Redis has several data types and talk about the characteristics.
10. Nosql has several data types.
11. What are the main functions in the project?
Three sides
Three rounds of interviewers (males around 35, short, cautious and serious, looks like department heads)
1. Introduction
- (At the end, I mentioned that I was honored and lucky to participate in the third round of interviews. I was caught by the interviewer and asked: Why do you say that? Is it so difficult to recruit this autumn? Can you tell me what makes you lucky?)
Me: This year's The employment situation is much worse than last year. The job demand of many companies is single-digit, and the competition is particularly fierce; coupled with the trade war with the United States this year, I feel that this year is a small employment year.
2. Why did you choose Huawei? What kind of company do you think Huawei is?
3. Has anything made you feel anxious lately?
4. The problem of the Java virtual machine
5. The GC mechanism, when to start Minor GC and when to start Full GC
6. Hashmap treemap
7. The reason why the database index does not use a binary tree is because the binary tree may become O(n)
8. How to speed up the database Query: cache index, sub-table and sub-database,
9. Network sticky packet
10. Can't the network two handshake be done?
11. Kafka water mark (high watermark)
12. Comparison of traversal efficiency between ArrayList and LinkedList? ArrayList faster operating system read ahead
At last
In view of the fact that many people have been interviewing recently, I have also compiled a lot of interview topic materials here, as well as experience from other major companies. Hope it helps everyone.
Latest finishing interview questions
The answers to the above interview questions are organized into document notes.
I also sorted out some interview materials & the latest interview questions collected by some big companies in 2020 (all organized into documents, a small part of the screenshots), if necessary, you can click to enter the password: qf
Newly organized e-books
The latest compilation of interview documents
The above is the whole content of this article, I hope it will be helpful to everyone's study, and I hope you can support it. One-click three consecutive!