TO THE NEW Interview Questions, Process, and Tips

Q1. Tell me about your self
Ans. 
I am a data research analyst with a strong background in statistical analysis and data visualization.
• Experienced in collecting, analyzing, and interpreting complex data sets

• Proficient in statistical software such as R, Python, and SQL

• Skilled in creating data visualizations to communicate insights effectively
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Q1. Do you about isv , enterprises companies
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Q2. Know about zoominfo Salesforce lusha
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Q1. Asking about fintech company
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Q2. Healthtech companies about
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Easy and able to clear it, conducted virtually.

Q1. How to solve the troublshooting in ott
Ans. 
Troubleshooting in OTT involves identifying and resolving issues related to streaming services.
• Check internet connection and speed

• Verify account credentials and subscription status

• Clear cache and cookies

• Update app or software

• Restart device

• Contact customer support for further assistance
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Q2. Which ott platform you use and what was the problems you face
Ans. 
I use Netflix and Hulu. The main problem I face is occasional buffering issues.
• I use Netflix for a wide variety of movies and TV shows.

• I use Hulu for current episodes of TV shows.

• Occasional buffering issues can disrupt the viewing experience.
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Q1. Java this super
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Q2. Java spring boot
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Q1. Java basics and rest
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Q2. Rest API basics
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Mostly verbal and maths questions.

Q1. What is DDL, DML?
Ans. 
DDL stands for Data Definition Language and is used to define the structure of database objects. DML stands for Data Manipulation Language and is used to manipulate data within the database.
• DDL is used to create, modify, and delete database objects such as tables, indexes, and views

• DML is used to insert, update, delete, and retrieve data from the database

• Examples of DDL statements include CREATE TABLE, ALTER TABLE, DRO...read more
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Q2. SQL queries
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Q1. Strength and weakness
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Q2. Why TTN
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Q1. Difference between first() or FirstOrDefault()
Ans. 
first() returns the first element of a sequence, while FirstOrDefault() returns the first element or a default value if the sequence is empty.
• first() throws an exception if the sequence is empty, while FirstOrDefault() returns a default value (e.g. null) in that case.

• Use first() when you expect the sequence to always have at least one element, and FirstOrDefault() when the sequence might be empty.

• Example: var numbers =...read more
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Q2. Left join vs right join
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Left join includes all records from the left table and matching records from the right table, while right join includes all records from the right table and matching records from the left table.
• Left join: includes all records from the left table and matching records from the right table

• Right join: includes all records from the right table and matching records from the left table

• Example: Left join - SELECT * FROM table1...read more
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Q3. Optimization of SQL query
Ans. 
Optimizing SQL queries involves using indexes, minimizing joins, and avoiding unnecessary columns.
• Use indexes on columns frequently used in WHERE clauses

• Minimize the use of JOIN operations

• Avoid selecting unnecessary columns in the query

• Consider using stored procedures for frequently executed queries
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Q4. Tool used to check query slowness
Ans. 
One tool used to check query slowness is SQL Server Profiler.
• SQL Server Profiler can be used to trace and analyze query performance.

• It provides detailed information on query execution, including duration, reads, writes, and more.

• Users can identify slow queries and optimize them for better performance.

• Other tools like Query Store in SQL Server Management Studio can also be used for monitoring query performance.
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Q5. Design repository pattern using EF core
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Repository pattern using EF core for data access layer
• Create an interface for the repository with generic CRUD methods

• Implement the repository interface with EF core for data access

• Use dependency injection to inject the repository into services

• Separate concerns by having repositories handle data access logic
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