Which CNM component lies between a sandbox and the transport network, enabling portability across different network drivers?

Which CNM component lies between a sandbox and the transport network, enabling portability across different network drivers?

• A. Sandbox
• B. Endpoint
• C. Network
• D. Cloud Carrier

Answer: (B)

In CNM, a sandbox is the container’s isolated network namespace, and the Endpoint is the attachment point that connects that sandbox to a specific Network. It sits right at the boundary between the sandbox and the network path, acting as the bridge through which the container’s traffic enters the chosen network. This makes the Endpoint the natural component for linking a container’s sandbox to the transport network while keeping the container abstracted from the underlying driver details. The Network defines the logical network (backed by a driver), and the Cloud Carrier handles plugging CNM networks into different drivers, enabling cross-driver support—functions broader than the single bridging role of the Endpoint.

In CNM, a sandbox is the container’s isolated network namespace, and the Endpoint is the attachment point that connects that sandbox to a specific Network. It sits right at the boundary between the sandbox and the network path, acting as the bridge through which the container’s traffic enters the chosen network. This makes the Endpoint the natural component for linking a container’s sandbox to the transport network while keeping the container abstracted from the underlying driver details. The Network defines the logical network (backed by a driver), and the Cloud Carrier handles plugging CNM networks into different drivers, enabling cross-driver support—functions broader than the single bridging role of the Endpoint.