SAG Infotech TSE Interview Questions and Answers

Q1. Tell me about yourself
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Q1. 1 Project Explanation 2 SDLC & STLC. 3 Differentiate Smoke vs Sanity 4 What is Regression testing? 5 Bug life cycle. 6 Scenarios on real time example. 7 Questions on agile
Ans. 
Interview questions for Software Engineer position
• Project explanation should include details on the project's purpose, scope, and technologies used

• SDLC (Software Development Life Cycle) and STLC (Software Testing Life Cycle) are methodologies used in software development and testing respectively

• Smoke testing is a type of testing that checks if the basic functionalities of the software are working fine, while Sanity tes...read more
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Q1. All basic HR questions and salary discussion.
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Q1. How do you handle debugging in your code?
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I use print statements, logging, and debugging tools to identify and fix issues in my code.
• I start by reviewing the code and understanding the logic behind it.

• I use print statements to check the values of variables at different points in the code.

• I utilize logging to track the flow of the program and identify any errors.

• I use debugging tools like breakpoints and step-through debugging to pinpoint the exact location of ...read more
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Q2. What is your approach to optimizing a slow-running application?
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Identify bottlenecks, analyze code, optimize algorithms, utilize caching, and consider hardware upgrades.
• Identify bottlenecks in the application by profiling and monitoring performance.

• Analyze the code to find inefficient algorithms or database queries.

• Optimize algorithms and data structures to improve efficiency.

• Utilize caching mechanisms to reduce redundant computations.

• Consider hardware upgrades such as increasing m
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Q3. What is the difference between functional and object-oriented programming?
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Functional programming focuses on functions and immutability, while object-oriented programming focuses on objects and encapsulation.
• Functional programming uses pure functions that do not have side effects.

• Object-oriented programming uses objects that encapsulate data and behavior.

• In functional programming, data is immutable and functions are first-class citizens.

• In object-oriented programming, objects can have state a...read more
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Q1. Write a function to find the first non-repeating character in a string ?
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Function to find the first non-repeating character in a string
• Create a hashmap to store character frequencies

• Iterate through the string to populate the hashmap

• Iterate through the string again to find the first non-repeating character
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Q2. Explain the difference between a stack and a queue . Provide an example of when you would use each?
Ans. 
A stack is a data structure that follows the Last In First Out (LIFO) principle, while a queue follows the First In First Out (FIFO) principle.
• Stack: Last In First Out (LIFO), used for function calls, undo operations.

• Queue: First In First Out (FIFO), used for printing tasks, message queues.
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They just gave me an assessment with a few questions to test my subject knowledge

Q1. They asked me all the general questions and a few technical questions
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