LTIMindtree Application Developer Interview Questions, Process, and Tips

Q1. What is @SpringbootAnnotation and what is difference between @Controller and @RestController.
Ans. 
SpringBootAnnotation is used to enable Spring Boot features in a Java application. @Controller is used for MVC pattern, @RestController is used for RESTful web services.
• SpringBootAnnotation is used to enable Spring Boot features like auto-configuration, component scanning, etc.

• @Controller is used for MVC pattern to handle web requests and return a view, while @RestController is used for RESTful web services to return d...read more
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Q2. What is Stream API write the Stream API Code any code and lambda expression.
Ans. 
Stream API in Java provides a way to process collections of objects in a functional style.
• Stream API allows for easy manipulation of collections using functional programming concepts like map, filter, and reduce.

• Example: List names = Arrays.asList("Alice", "Bob", "Charlie"); names.stream().filter(name -> name.startsWith("A")).forEach(System.out::println);

• Lambda expressions can be used with Stream API to define behavio...read more
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Q1. Explain role and responsibilities in your profile
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Q2. Explain Ansible architecture
Ans. 
Ansible architecture is based on a client-server model where the control machine communicates with managed nodes using SSH.
• Ansible control machine: where playbooks are written and executed

• Managed nodes: machines that are being managed by Ansible

• Inventory: list of managed nodes

• Playbooks: automation scripts written in YAML format

• Modules: reusable units of code that perform specific tasks on managed nodes
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Q3. Difference between cmd and entry point
Ans. 
Cmd is used to specify the default command to run when a container is started, while entry point is used to specify the executable that will run when the container starts.
• Cmd is optional and can be overridden at runtime, while entry point is required and cannot be overridden.

• Cmd is used to provide default arguments for the entry point command.

• Example: CMD ["python", "app.py"] - specifies the default command to run the ...read more
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Q4. How to stop container
Ans. 
To stop a container, use the 'docker stop' command followed by the container ID or name.
• Use 'docker ps' command to list all running containers

• Identify the container ID or name of the container you want to stop

• Run 'docker stop ' to stop the container
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Q1. Explain what are the tool you have been working. mostly open-source software
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Q2. Azure monitor tools and Azure Network issue question
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Q1. What are the differences between a procedure and a function?
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Q2. Write a query to find 3rd highest salary from each department
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Q3. What is synonym.
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Q4. What are the indexes you used ? Diff between bitmap and btree index
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2 simple codes were asked.

Q1. Explain microservices architecture in current project
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Q2. Java 8 features
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Q1. Question related to current project.
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Q1. Internal working of Hashmap
Ans. 
HashMap in Java is a data structure that stores key-value pairs and uses hashing to efficiently retrieve values.
• HashMap uses hashing to store and retrieve key-value pairs

• It uses an array of linked lists to handle collisions

• The key's hash code is used to determine the index in the array where the key-value pair is stored

• HashMap allows one null key and multiple null values

• Example: HashMap<String, Integer> map = new
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Q2. Difference between string builder and string buffer
Ans. 
String builder is not synchronized, faster but not thread-safe. String buffer is synchronized, slower but thread-safe.
• String builder is faster due to lack of synchronization, suitable for single-threaded environments.

• String buffer is slower due to synchronization, suitable for multi-threaded environments.

• Example: StringBuilder sb = new StringBuilder(); StringBuffer sbf = new StringBuffer();
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Q1. Why would you like to join us
Ans. 
I am passionate about developing innovative applications and believe in the mission of your company.
• Excited about the opportunity to work on cutting-edge technologies

• Aligned with the company's values and goals

• Seeking a challenging and dynamic work environment

• Impressed by the company's reputation and success stories
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Q2. Expected CTC and current CTC
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