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Principal Engineer Interview Questions
4,341 principal engineer interview questions shared by candidates
How do you find the time for which half of a string would burn, if lit from one end, if- a) string burns non-linearly (not with constant rate) b) you have one more sting to experiment by burning
How you learn the things and about positive nature about team and your work
Any challenges faced and how it got handled effectively
Given a range of integers from 0-N, and an array of blacklisted numbers, write a Java method to return a random number in the allowed range.
The technical questions were not very difficult for someone with my experience. One question was on performance troubleshooting relating to parameter sniffing.
What would you do if you found an infected host on your network and how would you stop it's spread? (No details were given on what tools or equipment the customer may have)
1. What is the difference between JPA, Hibernate and Spring JDBC 2. What is AWS Lambda and why we need it 3. How much time does AWS Lambda take for running a program (15 min) and what memory size it allows (5MB) 4. Write a Singleton and explain how you can create instance of Singleton from Cloneable 5. How to write Singleton to handle multiple threads 6. What are the features of Java 8 7. What is Global Load balancing 8. Write a Program to remove duplicates from an ArrayList without using a Set 9. What is String pool and why is String Immutable 10. Write answer for this code String s1 = "abc"; String s2 = "abc"; Sysout(s1 == s2); // true, since they both are in String pool Sysout(s1.equals(s2)); // true String s3 = new String("abd"); Sysout(s1==s3) // false Sysout(s1.equals(s3); // true 11. What are the datatypes in Java
Write programs.
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