Think Surf Media Interview Questions and Answers

Q1. What are closures
Ans. 
Closures are functions that have access to variables from their containing scope even after the parent function has finished executing.
• Closures allow functions to 'remember' the environment in which they were created

• They can access variables from their outer function even after the function has returned

• Closures are commonly used in event handlers and callbacks
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Q1. What are high order functions in react js explain with an example
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High order functions in React JS are functions that take other functions as arguments or return functions as their output.
• High order functions allow for code reusability and cleaner code structure.

• An example of a high order function in React JS is the map function, which takes a function as an argument to transform elements in an array.

• Another example is the filter function, which takes a function as an argument to fil
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Q1. Reason for changing job and why should we hire you
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Seeking new challenges and opportunities for growth. I bring a unique blend of skills and experience to add value to your team.
• Looking for new challenges and opportunities for professional growth

• Seeking a more dynamic work environment to utilize my skills effectively

• Excited about the possibility of contributing to a new team and organization

• Believe my diverse skill set and experience make me a valuable addition to your
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Q1. Real time DBA issues and scenarios
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Q2. Questions on HA and Always on
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Q1. Related to Java
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I was given a pdf file containing 3 Problem statements along with the output for which I had to write SQL queries.

Q1. Theoretical Questions related to SQL were asked like types of join, the difference between union and join, related to my project, and some behavioral questions.
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Q2. What are different types of Joins?
Ans. 
Joins are used to combine data from two or more tables based on a related column between them.
• Inner Join: returns only the matching rows from both tables

• Left Join: returns all rows from the left table and matching rows from the right table

• Right Join: returns all rows from the right table and matching rows from the left table

• Full Outer Join: returns all rows from both tables

• Cross Join: returns the Cartesian product of b
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Q3. What is the Difference between Union and Joins
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Joins combine rows from two or more tables based on a related column, while unions combine rows from two or more tables with the same structure.
• Joins are used to combine data from different tables based on a related column

• Unions are used to combine data from tables with the same structure

• Joins can be inner, left, right, or full, while unions are always a combination of all rows

• Joins can have multiple conditions, while ...read more
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Q1. Scenario-based questions on SQL
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Q1. Questions related to me like what my parents do etc. and their company profile.
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Q1. Javascript based coding question
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Q1. Describe oops concept.
Ans. 
OOPs concept stands for Object-Oriented Programming, which is a programming paradigm based on the concept of objects.
• OOPs focuses on creating objects that contain both data and methods to manipulate that data.

• It emphasizes concepts like inheritance, encapsulation, polymorphism, and abstraction.

• Inheritance allows a class to inherit properties and behavior from another class.

• Encapsulation restricts access to certain comp...read more
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