Docker Questions and Answers 100% Correct

Docker Questions and Answers 100% Correct Explain the architecture of Docker - Answer️️ --Docker uses a client-server architecture. -Docker Client is a service that runs a command. The command is translated using the REST API and is sent to the Docker Daemon (server). -Docker Daemon accepts the request and interacts with the operating system to build Docker images and run Docker containers. -A Docker image is a template of instructions, which is used to create containers. -Docker container is an executable package of an application and its dependencies together. -Docker registry is a service to host and distribute Docker images among users. Why are virtual machines bad? - Answer️️ -Memory Space: Virtual machines occupies a lot of memory space Boot-up time: Long boot-up time Performance: Running multiple virtual machines leads to unstable performance Scaling: Difficult to scale up Efficiency: Low efficiency Portability: Compatibility issues while porting across different platforms Space Allocation: Data volumes cannot be shared What are the advantages of Docker over virtual machines? - Answer️️ -Memory Space: Dockers containers occupy less space Boot-up time: Short boot-up time Performance: Containers have a better performance, as they are hosted in a single Docker engine Scaling: Easy to scale up Efficiency: High efficiency Portability: Easily portable across different platforms Space Allocation: Data volumes are shared and used again across multiple containers How do we share Docker containers with different nodes? - Answer️️ -It is possible to share Docker containers on different nodes with Docker Swarm. Docker Swarm is a tool that allows IT administrators and developers to create and manage a cluster of swarm nodes within the Docker platform