TCS Software Developer Interview Questions, Process, and Tips

Q1. How does API work?
Ans. 
API works as a set of rules and protocols that allows different software applications to communicate with each other.
• API acts as an intermediary that allows two different software programs to talk to each other

• API specifies the methods and data formats that applications can use to request and exchange information

• API can be used to access data or functionality from a remote server, such as retrieving weather data from a...read more
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Q2. How do you use indexing?
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Indexing is used to optimize database queries by creating data structures that allow for faster retrieval of information.
• Indexing involves creating data structures like B-trees or hash tables to store key-value pairs for faster retrieval.

• Indexes can be created on columns in database tables to speed up search queries.

• Examples of indexing include creating a primary key index on a unique identifier column or a non-cluster
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Leetcode medium questions

Q1. Projects and past internships
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Q2. Behavioural and generic educational questions
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Maths,general knowledge

Q1. Explain linked list in singly linked list
Ans. 
A singly linked list is a data structure where each element points to the next element in the sequence.
• Each element in a singly linked list is called a node.

• Nodes contain data and a reference to the next node in the sequence.

• The last node points to null to indicate the end of the list.

• Traversal in a singly linked list starts from the head node and follows the next pointers.

• Insertion and deletion operations can be effic
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Q2. Explain jvm and jdk working
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JVM is a virtual machine that executes Java bytecode, while JDK is a development kit that includes tools for developing Java applications.
• JVM stands for Java Virtual Machine and is responsible for running Java bytecode on different platforms.

• JDK stands for Java Development Kit and includes tools like compiler, debugger, and libraries for developing Java applications.

• JDK contains JRE (Java Runtime Environment) which inc...read more
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Q1. What is AWS EC2, S3 bucket?
Ans. 
AWS EC2 is a web service that provides resizable compute capacity in the cloud. S3 bucket is a storage service for the internet.
• AWS EC2 stands for Amazon Elastic Compute Cloud, which allows users to rent virtual servers on which to run their own applications.

• EC2 instances can be easily scaled up or down based on demand, making it a flexible and cost-effective solution for hosting applications.

• S3 bucket is a storage ser...read more
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Q2. What is Devops?
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Devops is a software development methodology that combines software development (Dev) with IT operations (Ops) to shorten the systems development life cycle.
• Devops focuses on collaboration, automation, and integration between developers and IT operations teams.

• It aims to improve the speed and quality of delivering software applications.

• Devops practices include continuous integration, continuous delivery, and infrastruc...read more
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Java basics questions

Q1. What about yourself
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Q2. What is java virtual machine
Ans. 
Java Virtual Machine (JVM) is a virtual machine that enables a computer to run Java programs.
• JVM is responsible for converting Java bytecode into machine code that can be executed by the computer's processor.

• It provides a layer of abstraction between the Java application and the underlying hardware.

• JVM is platform-independent, allowing Java programs to run on any device that has a JVM implementation.

• Examples of JVM imp...read more
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Q3. What are your strengths
Ans. 
My strengths include problem-solving skills, attention to detail, and strong programming abilities.
• Strong problem-solving skills - I enjoy tackling complex issues and finding creative solutions.

• Attention to detail - I am meticulous in my work to ensure accuracy and quality.

• Strong programming abilities - I have a solid foundation in various programming languages and technologies.
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Q4. What are your weakness
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One of my weaknesses is that I can be overly critical of my own work.
• I tend to be a perfectionist and can spend too much time on a task trying to make it perfect.

• I sometimes struggle with delegating tasks to others because I want to ensure they are done correctly.

• I am working on improving my time management skills to avoid getting overwhelmed with multiple projects.
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Q1. Why do you want to work for our company
Ans. 
I am impressed by your company's innovative projects and collaborative work culture.
• I admire the cutting-edge technology your company uses

• I am excited about the opportunity to work with a talented team

• Your company's reputation for fostering creativity and growth is appealing to me
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Q2. Tell me about the gap in your resume
Ans. 
Took a break to care for a sick family member
• Took a break from work to care for a sick family member

• Spent time providing support and assistance to a family member in need

• Focused on family responsibilities during the gap in employment
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Q3. What is your biggest achievement so far
Ans. 
Developing a mobile app that reached 1 million downloads within the first year of launch.
• Designed user-friendly interface to enhance user experience

• Implemented effective marketing strategies to reach target audience

• Received positive feedback and high ratings on app stores
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Q1. OOPS related questions in java
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Q2. Domain specific question
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