Oracle Devops Engineer Interview Questions and Answers

Q1. How do you design Microservices
Ans. 
Designing microservices involves defining services, ensuring scalability, and maintaining loose coupling for flexibility.
• Identify business capabilities: Break down the application into distinct services based on business functions, e.g., user management, payment processing.

• Define service boundaries: Ensure each microservice has a clear responsibility and can operate independently, e.g., an order service should not hand...read more
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Q2. How do you upgrade cluster EKS
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Q1. What is Thin vs thick provisioning ?
Ans. 
Thin provisioning allocates storage space on demand, while thick provisioning allocates all space upfront.
• Thin provisioning only allocates storage space as it is needed, reducing wasted space

• Thick provisioning allocates all storage space upfront, regardless of actual usage

• Thin provisioning is more flexible and efficient, but can lead to over-allocation if not managed properly

• Thick provisioning provides better performan...read more
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Overall ok It was 30 min duration

Q1. About experience in DevOps ?
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Q2. How do you approach to create a jenkins pipeline ?
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Q3. Syntax to print jenkins secrets ?
Ans. 
To print Jenkins secrets, use the syntax: printenv
• Use the 'printenv' command followed by the name of the secret to print its value

• Make sure to have the necessary permissions to access the secret

• Example: printenv MY_SECRET
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Q4. Creation of Docker image using Dockerfile ?
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Dockerfile is a script that contains instructions to build a Docker image.
• Create a Dockerfile with instructions for building the image

• Use the 'docker build' command to build the image from the Dockerfile

• Example: FROM ubuntu:latest RUN apt-get update && apt-get install -y nginx

• Example: docker build -t myimage:latest .
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Q5. Difference between CMD and RUN in Dockerfile ?
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Q6. Difference between Java and Nodejs ?
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Java is a statically typed language while Nodejs is a runtime environment for executing JavaScript code.
• Java is compiled while Nodejs is interpreted

• Java is better for large-scale enterprise applications while Nodejs is better for real-time applications

• Java has a larger community and more libraries while Nodejs has a simpler and more lightweight architecture

• Java is used for Android app development while Nodejs is used f...read more
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Q7. What is PaaS, IaaS & SaaS ?
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PaaS, IaaS, and SaaS are cloud computing models that provide different levels of infrastructure and software services.
• PaaS (Platform as a Service) provides a platform for developers to build and deploy applications without worrying about infrastructure management.

• IaaS (Infrastructure as a Service) provides virtualized computing resources such as servers, storage, and networking.

• SaaS (Software as a Service) provides sof...read more
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Q8. What is DevOps ?
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Q9. What is build in Java ?
Ans. 
Build in Java refers to the process of compiling source code into executable code.
• Build process involves compiling, testing, and packaging the code

• Java build tools like Maven and Gradle automate the build process

• Build artifacts can be JAR, WAR, or EAR files

• Build process can be customized using build scripts like Ant
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Q1. About you your experience and communication skills
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Q1. Depends upon team leader Ask basics as well as the issue they are facing during their work.
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Q2. Especially Linux file system How to mount additional disk Booting process Docker file structure
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Q1. Second technical round is depends upon the TL he can ask your experience and issues
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Q2. And can ask questions about cloud AWS and azure
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Q1. Salary discussion
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Q1. Explain our company devops process
Ans. 
Our company's DevOps process focuses on continuous integration, automated testing, and deployment.
• Continuous integration: Developers regularly merge their code changes into a shared repository, triggering automated builds and tests.

• Automated testing: Testing is automated at various stages of the development process to ensure code quality and reliability.

• Deployment automation: Code changes are automatically deployed to ...read more
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Q1. About the basic linux command
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Basic Linux commands are essential for navigating and managing files in a Linux environment.
• ls: Lists files and directories. Example: 'ls -l' for detailed listing.

• cd: Changes the current directory. Example: 'cd /home/user' to navigate to user directory.

• cp: Copies files or directories. Example: 'cp file.txt /backup/' to copy file to backup.

• mv: Moves or renames files or directories. Example: 'mv oldname.txt newname.txt' ...read more
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Q2. About devops tools like jenkins, kubernetes, etc
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