Covalense Senior Software Engineer Interview Questions and Answers

Q1. About the project. and asked what i did in project. how to create schema in pyspark. what is ADE. what are the difficulties i faced in project. what is spark submit command how we write sparksubmit command...read more
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Q2. No of occurrences of letter in a string.
Ans. 
Count occurrences of a letter in a string.
• Iterate through each character in the string and count occurrences of the specified letter.

• Use a hashmap to store the count of each letter.

• Handle both uppercase and lowercase letters to ensure accurate counting.
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Q1. 30 minutes of discussion.
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Q1. 75 minutes of discussion
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Q1. Data structure question asked
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Group discussion is very important thing.

Q1. HR round is very easy.
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Q2. Just hard and smart work for.
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Q3. What is requirement.
Ans. 
A requirement is a specific need or expectation that must be met in order to achieve a desired outcome.
• A requirement is a statement of what a product or service must do or how it must perform.

• Requirements can be functional (what the product must do) or non-functional (how well it must do it).

• Requirements should be clear, concise, and measurable.

• Examples of requirements include: the ability to save and retrieve data, a ...read more
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Q4. What is your strength.
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My strength is problem-solving and analytical thinking.
• I have a strong ability to analyze complex problems and break them down into manageable components.

• I excel at finding innovative solutions and thinking outside the box.

• I am skilled in debugging and troubleshooting software issues.

• I have a solid understanding of algorithms and data structures.

• I am experienced in optimizing code for performance and efficiency.
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Q5. What is your weekness.
Ans. 
My weakness is that I tend to be too detail-oriented, which can sometimes slow down my progress.
• I have a tendency to get caught up in the small details and can spend too much time on them.

• I often find myself double-checking my work to ensure accuracy.

• I sometimes struggle with prioritizing tasks because I want to make sure everything is perfect.

• I am actively working on improving my time management skills to balance atte
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Q1. There was simple DSA question ,
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Q1. Based on previous projects
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Q1. What is dependency injection in laravel
Ans. 
Dependency injection in Laravel is a technique to manage class dependencies and improve code flexibility.
• Dependency injection allows for easier testing and maintenance of code.

• It involves passing dependencies to a class through its constructor or method parameters.

• Laravel's container class manages the dependencies and resolves them when needed.

• Example: injecting a database connection into a repository class.

• Can also us...read more
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Q2. How do you find the second largest number in a coulmn in mySQL
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To find the second largest number in a column in MySQL, you can use the ORDER BY and LIMIT clauses.
• Write a SELECT statement to retrieve the column values in descending order using ORDER BY.

• Use the LIMIT clause to limit the result set to the second row.

• The value in the second row will be the second largest number in the column.
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Q1. What do you know about magic Edtech
Ans. 
Magic Edtech is an innovative educational technology company.
• Magic Edtech develops interactive learning platforms and tools.

• They use advanced technologies like AI, AR, and VR to enhance the learning experience.

• Their products include virtual classrooms, adaptive learning systems, and educational games.

• Magic Edtech focuses on personalized learning and data-driven insights.

• They collaborate with schools, universities, and
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Q2. What was the most challenging task you faced and how you overcame it
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