Gammastack Solution Engineer Interview Questions and Answers

Q1. What is Event Loop in Node.Js, How it works
Ans. 
Event Loop in Node.js is a mechanism that allows Node.js to perform non-blocking I/O operations.
• Event Loop is responsible for handling asynchronous operations in Node.js.

• It allows Node.js to perform multiple operations simultaneously without blocking the execution.

• Event Loop continuously checks the event queue for any pending tasks and executes them in a loop.

• Example: setTimeout() function in Node.js uses Event Loop to...read more
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Q2. Indexing, Sharding, DB Scaling, Application Security and scaling
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Q3. DSA question related to array, string
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4 coding question 1 easy 2 medium 1 hard

Q1. Brief introduction of yourself
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Q2. Write an sql query to find second largest salary
Ans. 
SQL query to find the second largest salary in a table
• Use the MAX() function to find the highest salary

• Use the WHERE clause to exclude the highest salary

• Order the salaries in descending order and limit the result to 1
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Q1. DSA theory question and their time complexities
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Q2. DBMS normalization acid property keys etc
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Q3. Coding easy to medium level
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Frond end related coding

Core js and next interview

Q1. Previous experience
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Q2. Future goals
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Q1. Introduce yourself
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