200-901 Question 113
Single answerYou are tasked with deploying a containerized application for a development team. The team requires that each container instance can communicate with others within the same network but remain isolated from the host system. Which of the following container runtime features would best support these requirements?
- A
Container networking
- B
Namespace isolation
- C
Container orchestration
- D
Volume mapping
Show answer and explanation
Correct answer: B
Explanation
Namespace isolation is a core feature of container runtimes like Docker, which ensures that containers have a separate, isolated environment for processes, network interfaces, and file systems. This supports communication between containers within the same network while maintaining isolation from the host system, aligning with the development team's requirements.
- A. Incorrect.
Container networking enables communication between containers or external systems, but it does not ensure isolation from the host system.
- B. Correct.
Namespace isolation is a feature that allows containers to have isolated process IDs, network interfaces, and file systems, ensuring communication within the container network while keeping them isolated from the host system.
- C. Incorrect.
Container orchestration refers to the management of containerized applications across multiple hosts but does not directly address isolation or communication within a container network.
- D. Incorrect.
Volume mapping is used to share data between the container and the host system or persist data but does not address communication or isolation.