DataMetica Member Technical Staff Interview Questions, Process, and Tips

CICD stands for Continuous Integration and Continuous Deployment. It is a software development practice where code changes are automatically built, tested, and deployed.

• Automates the process of integrating code changes into a shared repository

• Automatically builds and tests the code to ensure it is functional

• Automatically deploys the code to production or staging environments

• Helps in detecting and fixing integration err

To create an image out of a running container, you can use the 'docker commit' command.

• Use 'docker commit' command to create an image from a running container

• Syntax: docker commit [OPTIONS] CONTAINER [REPOSITORY[:TAG]]

• Example: docker commit container_id repository_name:tag

Docker add command can fetch a file from a URL and add it to the image, while copy command copies files from the host machine to the image.

• Docker add command can fetch files from URLs and add them to the image

• Copy command copies files from the host machine to the image

• Add command can also automatically extract compressed files during the build process

• Copy command is more commonly used for copying local files

A freestyle project is a type of project in Jenkins that allows users to configure the build process in any way they want. A pipeline is a set of automated steps that define the process for building, testing, and deploying code.

• Freestyle project in Jenkins allows users to configure build process manually

• Pipeline in Jenkins is a set of automated steps for building, testing, and deploying code

• Freestyle projects are more ...read more

Docker Swarm is used for orchestrating multiple Docker containers across multiple hosts, while Docker Compose is used for defining and running multi-container Docker applications.

• Docker Swarm is a container orchestration tool that allows you to manage a cluster of Docker hosts.

• Docker Compose is a tool for defining and running multi-container Docker applications.

• Docker Swarm is used for scaling and managing a cluster of...read more

VPC stands for Virtual Private Cloud, a virtual network dedicated to a single organization's resources in the cloud.

• Allows organizations to have control over their virtual network environment

• Enables customization of network configuration

• Provides security by allowing isolation of resources

• Can connect to on-premises data centers or other VPCs using VPN or Direct Connect

CICD pipeline is a process that automates the building, testing, and deployment of software.

• Continuous Integration (CI) - code changes are integrated into a shared repository multiple times a day.

• Continuous Testing - automated tests are run to ensure code quality.

• Continuous Deployment - code changes are automatically deployed to production.

• Stages include: build, test, deploy, and monitor.

• Tools like Jenkins, GitLab, and

VPC peering allows connecting two VPCs to communicate using private IP addresses.

• VPC peering enables instances in different VPCs to communicate as if they are within the same network.

• Traffic between peered VPCs stays within the private IP space and does not traverse the internet.

• VPC peering does not involve a gateway, VPN, or direct connection.

• Both VPCs must have non-overlapping IP ranges for successful peering.

• Example...read more

VPC is a virtual private cloud that allows you to create isolated networks within the cloud environment. Subnets are subdivisions of a VPC, route tables define how traffic is directed within the VPC, and NAT gateway allows instances in a private subnet to access the internet.

• VPC is a virtual private cloud that provides a logically isolated section of the AWS Cloud where you can launch resources.

• Subnets are subdivisions...read more