DataMetica Technical Lead Interview Questions and Answers

Q1. Cisco Servers Installation
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Q2. HPe servers installation
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Q1. They first ask me about my project then ask more how it was working ,and more deep questions on that to understand how much I know about the project I worked on .
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Q2. Spring Authentitation and Authorization,And Kubernetes
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Q1. About batch processing
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Q2. About exception handling
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Q1. About project discussion in details
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Q2. Aws services mainly
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Q1. Handling a team
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Q2. Micro service architecture
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Q1. About personal things
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Q2. About financial thing
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General discussion on profile and work experience

Q1. How does spring injects dependencies
Ans. 
Spring injects dependencies through inversion of control and dependency injection.
• Spring uses inversion of control to manage objects and their dependencies.

• Dependencies are injected into a class through constructor injection, setter injection, or field injection.

• Spring container is responsible for creating and managing objects and their dependencies.

• Example: @Autowired annotation is used for dependency injection in Spr
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Q2. How does Hibernate connects to DB
Ans. 
Hibernate connects to the database using JDBC (Java Database Connectivity) API.
• Hibernate uses JDBC API to establish a connection to the database.

• It uses JDBC drivers to communicate with the database.

• Hibernate configuration file contains database connection details.

• SessionFactory in Hibernate is responsible for creating sessions and managing connections.
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Q1. How to secure your APIs
Ans. 
Securing APIs involves using authentication, authorization, encryption, and monitoring.
• Implement authentication mechanisms such as OAuth, JWT, or API keys

• Use authorization to control access to APIs based on roles and permissions

• Encrypt data transmission using HTTPS/TLS to prevent eavesdropping

• Implement rate limiting and throttling to prevent abuse and DDoS attacks

• Regularly monitor API traffic and logs for suspicious ac
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Q2. How can you configure multiple DBs in your application
Ans. 
Multiple DBs can be configured in an application by using database connection pooling, configuring multiple data sources, and managing transactions across databases.
• Use database connection pooling to efficiently manage connections to multiple databases

• Configure multiple data sources in the application to connect to different databases

• Implement transaction management to ensure data consistency across multiple databases
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Q1. Family Background and Career History
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Q2. Salary Expectations
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Q1. Cisco Servers Installation
Add your answer
Q2. HPe servers installation
Add your answer

Q1. They first ask me about my project then ask more how it was working ,and more deep questions on that to understand how much I know about the project I worked on .
Add your answer
Q2. Spring Authentitation and Authorization,And Kubernetes
Add your answer

Q1. About batch processing
Add your answer
Q2. About exception handling
Add your answer

Q1. About project discussion in details
Add your answer
Q2. Aws services mainly
Add your answer

Q1. Handling a team
Add your answer
Q2. Micro service architecture
Add your answer

Q1. About personal things
Add your answer
Q2. About financial thing
Add your answer