Which technology enables packaging and running software in isolated environments that share the host OS kernel?

Which technology enables packaging and running software in isolated environments that share the host OS kernel?

• A. Public Cloud
• B. Private Cloud
• C. Community Cloud
• D. Containers

Answer: (D)

Containerization is the technology that packages and runs software in isolated environments that share the host OS kernel. It uses OS-level isolation (namespaces and control groups) so each container has its own user space while all containers share the same kernel. This makes containers lightweight, fast to start, and highly portable because the application and its dependencies travel with the container image, consistently running across different hosts and environments. The other options describe cloud deployment models, not the isolation mechanism itself, so they don’t explain how software stays isolated while sharing the host kernel.

Containerization is the technology that packages and runs software in isolated environments that share the host OS kernel. It uses OS-level isolation (namespaces and control groups) so each container has its own user space while all containers share the same kernel. This makes containers lightweight, fast to start, and highly portable because the application and its dependencies travel with the container image, consistently running across different hosts and environments. The other options describe cloud deployment models, not the isolation mechanism itself, so they don’t explain how software stays isolated while sharing the host kernel.