Swatirtha Charitable Trust Technical Trainer Interview Questions and Answers

Q1. Some random technical concept to explain .
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Q2. How you introduce freshers to technology
Ans. 
I introduce freshers to technology by providing hands-on training, explaining concepts in simple terms, and encouraging experimentation.
• Provide hands-on training sessions to help them understand practical applications of technology

• Explain complex technical concepts in simple terms to make it easier for them to grasp

• Encourage experimentation and problem-solving to build their confidence and skills

• Use real-world examples...read more
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Q3. How to motivate yourself to teach
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I motivate myself to teach by setting goals, staying passionate about the subject, seeking feedback, and celebrating small victories.
• Set clear and achievable goals for each teaching session

• Stay passionate about the subject matter to keep yourself engaged

• Seek feedback from students to understand areas of improvement

• Celebrate small victories and milestones to stay motivated
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Q1. Stm32,automotive,model based engineering
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Q2. Rtos,8051,risc,cisc, baremetal coding
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Q1. Are you comfortable with rotational shift?
Ans. 
Yes, I am comfortable with rotational shifts as I have prior experience working in such shifts.
• I have previous experience working in rotational shifts and have adapted well to the schedule.

• I understand the importance of flexibility in work hours to meet the needs of the job.

• I am willing to adjust my personal schedule to accommodate rotational shifts.

• I believe rotational shifts can offer a variety of experiences and cha...read more
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Q2. Are you comfortable with rotational week offs?
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60 min total
45-aptitude question
2-coding question

Q1. What is garbage collecture
Ans. 
Garbage collector is a program that automatically frees up memory by reclaiming memory occupied by objects that are no longer in use.
• Garbage collector is a part of the memory management system in programming languages like Java, C#, and Python.

• It helps prevent memory leaks by identifying and freeing up memory that is no longer needed.

• Garbage collection can be automatic or manual, depending on the programming language a
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Q2. Differnce between public key and foreign key
Ans. 
Public key is used for encryption and decryption in asymmetric cryptography, while foreign key is used to establish a relationship between tables in a database.
• Public key is used in asymmetric cryptography for secure communication.

• Foreign key is used in databases to establish relationships between tables.

• Public key is shared with others for encryption, while private key is kept secret for decryption.

• Foreign key links a...read more
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Q1. Tell us about your past project architecture
Ans. 
I have designed and implemented a microservices architecture for a large e-commerce platform.
• Utilized Docker containers for easy deployment and scalability

• Implemented API gateway for centralized authentication and routing

• Used message queues for asynchronous communication between services
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Q1. What and why IOC Container in spring
Ans. 
IOC Container is a core feature of Spring Framework that manages the dependencies between objects.
• IOC stands for Inversion of Control

• It is used to achieve loose coupling between objects

• It allows objects to be created and wired together by an external framework

• It reduces the amount of code needed for configuration and maintenance

• Examples of IOC Containers in Spring are ApplicationContext and BeanFactory
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Q2. Why we use @Value in spring boot
Ans. 
We use @Value in Spring Boot to inject values from properties files or environment variables.
• Allows for external configuration of application properties

• Values can be injected from properties files or environment variables

• Can be used to inject values into fields, constructors, or methods

• Example: @Value("${my.property}") private String myProperty;
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Q3. Difference between SQL and Non-SQL database
Ans. 
SQL databases are relational and use structured data, while NoSQL databases are non-relational and use unstructured data.
• SQL databases use tables with predefined schema, while NoSQL databases use documents, key-value pairs, or graphs.

• SQL databases are better for complex queries and data analysis, while NoSQL databases are better for scalability and flexibility.

• Examples of SQL databases include MySQL, Oracle, and Postgr...read more
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Q4. Give real time scenario where have you used abstract class and interface
Ans. 
Abstract classes and interfaces are used to achieve abstraction and provide a blueprint for classes to implement.
• Used abstract class to create a base class for different types of vehicles, with common properties and methods.

• Used interface to define a contract for different payment methods, with each method implementing its own logic.

• Abstract classes are used when we want to provide a default implementation for some met...read more
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Q5. How did you handle authentication and authorization in project
Ans. 
Authentication and authorization were handled using a combination of technologies and protocols.
• Used OAuth 2.0 for authentication

• Implemented role-based access control for authorization

• Stored user credentials securely using bcrypt hashing algorithm

• Used JSON Web Tokens (JWT) for session management

• Implemented two-factor authentication for sensitive operations
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Q6. How will you encrypt customer information including SSN and others
Ans. 
Customer information will be encrypted using industry-standard encryption algorithms and stored securely.
• Use industry-standard encryption algorithms such as AES or RSA

• Ensure that encryption keys are securely stored and managed

• Implement secure storage mechanisms such as hashing and salting

• Regularly review and update encryption protocols to ensure they remain secure
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Q7. Why Serialization used
Ans. 
Serialization is used to convert complex data structures into a format that can be easily transmitted or stored.
• Serialization allows data to be sent over a network or saved to a file.

• It enables objects to be stored in a database or memory.

• Serialization is used in web services, messaging systems, and distributed computing.

• Examples include JSON, XML, and binary formats like Protocol Buffers and Apache Avro.
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Q8. Do you have any experience with Jenkins and Cloud Deployement
Ans. 
Yes, I have experience with Jenkins and Cloud Deployment.
• I have used Jenkins for continuous integration and continuous deployment.

• I have experience with setting up Jenkins pipelines for automated deployment.

• I have worked with cloud platforms like AWS and Azure for deploying applications.

• I have used tools like Ansible and Terraform for infrastructure automation.

• I have experience with containerization using Docker and Ku...read more
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Q9. Have you used Logging mechanism
Ans. 
Yes, logging is an essential part of software development.
• Logging helps in debugging and troubleshooting issues.

• It provides a record of events and actions taken by the system.

• It helps in monitoring system performance and identifying bottlenecks.

• Examples of logging mechanisms include log4j, syslog, and ELK stack.
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