OpsTree Solutions Interview Questions, Process, and Tips

Q1. What is difference between entry point and cmd in dockerfile
Ans. 
The ENTRYPOINT instruction specifies the command that will be executed when a container is run. The CMD instruction provides default arguments for the ENTRYPOINT command.
• ENTRYPOINT is used to specify the executable that will run as the main process inside the container.

• CMD is used to provide default arguments for the ENTRYPOINT command.

• ENTRYPOINT and CMD can be used together to create a flexible Docker image.

• ENTRYPOINT...read more
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Q2. Command to check free space in linux
Ans. 
Command to check free space in linux
• Use the 'df' command to check free space in Linux

• The '-h' option can be used to display the output in a human-readable format

• The '-T' option can be used to display the file system type

• The '-x' option can be used to exclude specific file system types

• The '-i' option can be used to display the inode information
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Q1. S3 buckets, auto scaling, docker swarm
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Tell me about yourself

Q1. Difference between Software Testing and Manual Testing
Ans. 
Software testing is a broader term that includes manual testing as well as automated testing.
• Software testing involves testing the software for bugs, errors, and defects.

• Manual testing is the process of manually testing software for defects without the use of automation tools.

• Automated testing involves using automation tools to execute test cases and compare actual outcomes with expected outcomes.

• Manual testing is time...read more
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Q1. NodeJs Architecture
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Q2. Whai is ExpressJS
Ans. 
ExpressJS is a fast, unopinionated, minimalist web framework for Node.js.
• ExpressJS is used for building web applications and APIs.

• It simplifies the process of handling HTTP requests and responses.

• Middleware functions can be used to perform tasks like authentication, logging, etc.

• Routing is a key feature of ExpressJS, allowing developers to define routes for different URLs.

• Example: const express = require('express'); co
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Q3. Coding question related to dictionary
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Q4. Indexes in MongoDB
Ans. 
Indexes in MongoDB are used to improve query performance by allowing the database to quickly locate documents.
• Indexes can be created on a single field or a combination of fields.

• Queries that filter on indexed fields can be executed more efficiently.

• Examples of creating indexes: db.collection.createIndex({ field: 1 })

• Compound indexes can be created by specifying multiple fields in the index definition.
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It was very detailed.

Q1. How fluent you are in AWS/Kubernetes?
Ans. 
I am highly fluent in AWS and Kubernetes, with extensive experience in designing, implementing, and managing cloud infrastructure.
• Extensive experience in designing and implementing AWS solutions such as EC2, S3, RDS, Lambda, and VPC

• Proficient in managing Kubernetes clusters, deploying applications, and scaling resources

• Hands-on experience with infrastructure as code tools like Terraform and CloudFormation

• Strong underst...read more
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Q2. What are other technologies you have worked on in your previous companies?
Ans. 
I have worked on technologies such as Docker, Kubernetes, Jenkins, Ansible, and Terraform in my previous companies.
• Docker

• Kubernetes

• Jenkins

• Ansible

• Terraform
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Q1. Why are you switching the company?
Ans. 
Seeking new challenges and growth opportunities in a different environment.
• Looking for a new challenge to expand my skills and knowledge

• Interested in working with new technologies or methodologies

• Seeking better career growth opportunities or benefits

• Want to work in a different industry or domain
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Q2. What are your salary expectations?
Ans. 
I am looking for a competitive salary that reflects my experience and skills in the DevOps field.
• Research average salaries for DevOps Engineers in the industry

• Consider my level of experience and expertise in the field

• Factor in the location and cost of living

• Open to negotiation based on benefits and opportunities for growth
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