OpsTree Solutions Interview Questions and Answers

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...read more

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'...read more

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 un...read more

Jenkins is a popular open-source automation server used for continuous integration and continuous delivery (CI/CD).

• Install Jenkins on a server or machine

• Create a new pipeline job in Jenkins

• Configure the pipeline job with the necessary settings and parameters

• Add stages and steps to the pipeline script

• Repeat the process to set up multiple pipelines

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.

• ENTRY...read more

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

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.