A systems administrator is setting up a virtualized staging environment on a workstation host to test multi-tier applications. The guest virtual machines must communicate with each other to simulate client-server traffic, but security policy requires complete isolation so that the virtual machines cannot communicate with the host operating system or access the external physical network. Which virtual network adapter configuration should the administrator select?
- Internal (Private) networking modeAnswer
- BBridged networking mode
- CAPIPA static IP address assignment on a Bridged interface
- DNAT networking mode with port forwarding disabled
Answer
Internal (Private) networking mode provides complete isolation by allowing virtual machines to communicate only among themselves while preventing access to the host operating system and external physical network.
Internal (Private) networking mode creates a virtual switch that is completely software-defined and unattached to any physical network adapter or host protocol driver. This allows guest virtual machines attached to the same internal network to talk to each other, while guaranteeing zero connectivity to the host OS or physical network.
Step-by-Step Solution
Key Concept
Virtual Network Adapter Modes and Guest Isolation