Zensar Technologies Interview Questions and Answers

Q1. Tell me about yourself
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Q2. Explain Spring Boot flow in your project
Ans. 
Spring Boot simplifies the development of Java applications by providing a set of tools and conventions.
• Spring Boot eliminates the need for manual configuration by providing defaults and auto-configuration.

• It includes embedded servers like Tomcat, Jetty, or Undertow for easy deployment.

• Spring Boot starters help in quickly setting up dependencies and configurations.

• Annotations like @SpringBootApplication and @RestContro...read more
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Q3. Explain Spring Security flow in your project
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Q4. What is @SpringBootApplication
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Annotation used to mark a class as a Spring Boot application
• Main annotation in Spring Boot to indicate the starting point of the application

• Combines @Configuration, @EnableAutoConfiguration, and @ComponentScan annotations

• Used to enable the auto-configuration feature in Spring Boot

• Reduces the need for XML configuration in Spring applications
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Q5. Coding Question - Find frequency of all the all the elements in Given String
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Q1. Introduce yourself
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Q2. What is Success according to you
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Success is achieving personal goals, feeling fulfilled, and making a positive impact on others.
• Success is subjective and can vary from person to person.

• It is not just about achieving wealth or fame, but also about personal growth and happiness.

• Success can be measured by the impact one has on others and the legacy they leave behind.

• Examples of success include reaching career milestones, maintaining healthy relationships...read more
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Q3. What are your strengths and weekness
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My strengths include strong problem-solving skills and attention to detail. My weakness is sometimes being too critical of my own work.
• Strength: Strong problem-solving skills - I enjoy tackling complex problems and finding efficient solutions.

• Strength: Attention to detail - I take pride in producing high-quality work and ensuring accuracy.

• Weakness: Being too critical of my own work - I strive for perfection and sometim...read more
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Q4. Tell me about your Family Background
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I come from a close-knit family with a strong emphasis on education and hard work.
• Family is supportive and values education

• Parents are both professionals

• Have a sibling who is also in the tech industry
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Q5. How do you solve any problem
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Q1. What is the difference between volatile and atomic variables?
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Volatile variables are used to indicate that a variable's value can be changed unexpectedly, while atomic variables ensure that operations on the variable are executed as a single, indivisible unit.
• Volatile variables are used when a variable's value can be changed by multiple threads or external factors, and the compiler should not optimize access to that variable.

• Atomic variables ensure that operations on the variable...read more
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Q2. How can caching be implemented?
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Caching can be implemented by storing frequently accessed data in a temporary storage area to improve performance.
• Use caching libraries like Redis or Memcached to store data in memory for quick access

• Implement caching at different levels such as application-level caching, database query caching, and HTTP caching

• Set expiration times for cached data to ensure freshness and prevent stale data

• Use caching strategies like la...read more
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The coding test consisted of easy to medium difficulty questions: 1. Find the Kth largest element. 2. Print an array based on the sequence specified in a different array. Additionally, there was a classical stack problem involving valid parentheses.

Q1. Build web app, inventory management
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Q1. Question on Spark and python and sql
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Q1. Questions on sql and python and spark
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Q1. General HR questions
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MCQ'S on Core Java, Java8, SQL, Microservices and Coding question in Java.

Q1. Java 8 concepts, Multi threading, Collections, Microservices, SOLID PRINCIPLES, Design Patterns and Java 8 coding and SQL queries
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Q2. Take a list and find the list containing prime numbers in list, Find the highest salary of employees using streams and also basic SQL queries on joins
Ans. 
Use Java streams to filter prime numbers from a list, find highest employee salary, and demonstrate basic SQL joins.
• Use Java streams to filter prime numbers from the list

• Use streams to find the highest salary of employees

• Demonstrate basic SQL queries for joins
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Q1. How you differentiate authorization and authentication ?
Ans. 
Authorization determines what a user can access, while authentication verifies the user's identity.
• Authorization controls access to resources based on user permissions

• Authentication verifies the user's identity through credentials like passwords or biometrics

• Authorization comes after authentication in the access control process

• Example: After logging into a system (authentication), a user is authorized to view certain f...read more
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Q2. What is SSO ?
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SSO stands for Single Sign-On, a method of access control that allows a user to log in with a single ID and password to access multiple applications.
• SSO eliminates the need for users to remember multiple passwords for different applications.

• It improves user experience by reducing the number of times a user has to log in.

• SSO can be implemented using technologies like SAML, OAuth, or OpenID Connect.

• Example: A user logs i...read more
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Q1. Implement Microservice for inserting record
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Implement a microservice to handle record insertion using RESTful API principles.
• Choose a programming language (e.g., Node.js, Python, Java) for the microservice.

• Use a framework (e.g., Express for Node.js, Flask for Python) to simplify API creation.

• Define a RESTful endpoint (e.g., POST /records) for inserting records.

• Implement data validation to ensure the integrity of incoming data.

• Connect to a database (e.g., MongoDB...read more
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