What is Docker? - A utility for running containers; - A virtual machine with pre-installed dependencies; - A hypervisor based on Linux OS; - An operating system based on BSD; What is the correct definition of containerization technology? - Running an application in a minimal environment necessary for operation. All libraries and dependencies needed for stable operation are already inside the container; - Isolating part of the OS resources to execute priority processes; - Linux OS technology that allows safe tuning of the kernel; - A technology that allows containerizing application errors for stable operation.

43. What is Docker?

Correct answer: A utility for running containers.

Docker is a platform for creating, delivering, and running applications in isolated containers. Containers allow you to package an application with its dependencies into a single image that can be run on any system with Docker.

44. The correct definition of containerization technology:

Running an application in the minimal environment necessary for operation. Inside the container, all libraries and dependencies required for the stable operation of the application are already present.

Containerization allows isolating the application and its environment from the host and other applications, ensuring portability and consistency of operation.