Tech Mahindra Software Engineer Interview Questions, Process, and Tips

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Q1. What is multi threading
Ans. 
Multi threading is the ability of a program to perform multiple tasks concurrently.
• Allows for efficient use of CPU resources

• Improves program responsiveness and user experience

• Can be used for parallel processing and background tasks

• Examples include web servers, video players, and gaming applications
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Q2. What is abstraction and polymorphism
Ans. 
Abstraction is hiding implementation details while polymorphism is using a single interface for multiple types.
• Abstraction allows us to focus on the essential features of an object while hiding the implementation details.

• Polymorphism allows us to use a single interface to represent multiple types of objects.

• Abstraction and polymorphism are closely related and often used together in object-oriented programming.

• For examp...read more
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Q1. About languages ,coding.
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Q2. Hr interview after a technical interview
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Q3. Shorlisted for interview get a offer letter
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Q4. Finally got offer letter from a company
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Q1. Python function to remove duplicate rows.
Ans. 
Python function using pandas to remove duplicate rows from a dataframe.
• Import pandas library

• Use drop_duplicates() method on the dataframe

• Specify subset of columns if needed

• Example: df.drop_duplicates(subset=['column1', 'column2'])
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Q2. What is F1 score?
Ans. 
F1 score is a measure of a test's accuracy that considers both the precision and recall of the test.
• F1 score is the harmonic mean of precision and recall.

• It is calculated using the formula: 2 * (precision * recall) / (precision + recall)

• F1 score ranges from 0 to 1, where 1 is the best possible score.

• It is commonly used in binary classification tasks.
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