TCS Software Engineer Interview Questions, Process, and Tips

The TCS National Qualifier Test (NQT) is an entry-level assessment for freshers seeking jobs at Tata Consultancy Services (TCS) and other partner companies. It tests candidates in three core areas: cognitive skills, IT programming, and subject-specific knowledge. The test includes sections on verbal ability, reasoning, numerical ability, and programming concepts. It is conducted both online and offline, and the score is valid for two years. Candidates can apply across multiple job roles using their NQT score.

Q1. **Explain the difference between a stack and a queue. Can you write code to implement both using an array?**
Ans. 
A stack is a Last In First Out (LIFO) data structure, while a queue is a First In First Out (FIFO) data structure.
• Stack: elements are added and removed from the top of the stack. Example: function call stack.

• Queue: elements are added at the rear and removed from the front of the queue. Example: waiting line at a store.

• Code to implement stack using array: push elements to end, pop elements from end.

• Code to implement que...read more
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Q2. **Describe a project you have worked on. What challenges did you face, and how did you resolve them?**
Ans. 
Developed a mobile app for tracking fitness goals and progress.
• Implemented user-friendly interface for easy data input and visualization

• Faced challenges with integrating third-party APIs for fitness tracking devices

• Resolved issues by thoroughly testing API connections and troubleshooting code

• Collaborated with team members to brainstorm solutions and improve app functionality
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Moderate level questions were asked .total three sections

Q1. Self intro ,family background
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Q2. Project, focused deep on project
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Q1. Tell me about urself
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Q2. About background
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Q1. Why do u want to join is
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Q2. In how many days you can join
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2hours , 30 questions

3 coding questions on java , python, java script

Q1. About yourself, basic questions on programming languages,
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Q2. Tell me about self
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Q3. Why should hire you ?
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Q4. Explain briefly major project and minor project
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Q5. Write a program prime numbers
Ans. 
Program to generate prime numbers
• Use a loop to iterate through numbers and check if each number is prime

• A prime number is a number greater than 1 that is only divisible by 1 and itself

• Optimize by only checking divisibility up to the square root of the number
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