Zuci Systems Interview Questions, Process, and Tips for Experienced

VPC communication can be achieved by setting up VPC peering, VPN connections, or using AWS Transit Gateway.

• Set up VPC peering to allow communication between VPCs within the same region.

• Establish VPN connections to securely connect VPCs across different regions or with on-premises networks.

• Utilize AWS Transit Gateway to simplify network connectivity and enable communication between multiple VPCs and on-premises networks...read more

A Dockerfile is a text document that contains all the commands a user could call on the command line to assemble an image.

• Start with a base image using the FROM keyword

• Use the RUN keyword to execute commands in the image

• Use the COPY or ADD keyword to add files from the host machine to the image

• Use the CMD keyword to specify the default command to run when the container starts

Yes, Jenkins can be integrated with Jira to automate ticket creation for the developer team.

• Install the Jenkins Jira plugin to enable integration

• Configure the plugin with Jira server details and credentials

• Set up a Jenkins job to trigger ticket creation in Jira upon certain events

• Use Jira REST API to interact with Jira from Jenkins job

Automate image version iteration by using CI/CD pipelines and version control systems.

• Use CI/CD pipelines to automatically build and deploy new versions of the image

• Integrate version control systems like Git to manage image versions

• Utilize tools like Jenkins, GitLab CI/CD, or CircleCI for automation

• Implement versioning schemes like semantic versioning (e.g. 1.0.0, 1.0.1, 1.1.0)

CICD flow is a process that automates the building, testing, and deployment of code changes.

• Continuous Integration (CI) - Developers regularly merge their code changes into a shared repository.

• Automated Testing - Automated tests are run to ensure code quality and functionality.

• Continuous Deployment (CD) - Code changes that pass testing are automatically deployed to production.

• Monitoring and Feedback - Continuous monito...read more

Isolation for database can be achieved through proper configuration and access control.

• Use separate database instances for different applications or environments

• Implement role-based access control to restrict access to sensitive data

• Utilize virtualization or containerization to isolate databases

• Encrypt data at rest and in transit to protect against unauthorized access

I monitor applications using a combination of monitoring tools, logs, and performance metrics.

• Utilize monitoring tools like Nagios, Prometheus, or Datadog to track application performance and availability

• Set up alerts for critical issues or performance degradation

• Analyze logs for errors and exceptions to troubleshoot issues

• Monitor key performance metrics such as response time, CPU usage, and memory usage

• Implement APM (...read more

A Spring bean is a Java object managed by the Spring IoC container.

• Spring beans are defined in the Spring configuration file.

• Beans are created and managed by the Spring IoC container.

• Beans can be singleton, prototype, request, session, or global-session scoped.

• Example:

Hibernate query is object-oriented, while native query is SQL-based.

• Hibernate query is written in HQL (Hibernate Query Language) which is object-oriented and works with Java objects.

• Native query is written in SQL and directly interacts with the database tables.

• Hibernate query is more portable and can be easily switched between different database systems.

• Native query can be more efficient for complex queries or when per...read more

Inner join is used to combine rows from two or more tables based on a related column between them.

• Inner join returns only the rows that have matching values in both tables.

• It is commonly used in SQL queries to retrieve data from multiple tables based on a related column.

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column;