CompTIA Cloud+ Practice Test

What is a valid first step for guest migration after establishing basic network and SAN connectivity?

1. Tag the live migration VLAN on the trunk

2. Correctly size and provision NFS LUNs

3. Zone HBAs

4. Prep mirror VMs on new hosts

The correct answer is: Tag the live migration VLAN on the trunk

Establishing a valid first step for guest migration after ensuring basic network and storage area network (SAN) connectivity is crucial for a seamless process. Tagging the live migration VLAN on the trunk is essential because it allows the guest virtual machines to communicate across the network segments during migration. By tagging the VLAN, the network infrastructure can recognize the traffic associated with the migration and ensure that it gets routed correctly, maintaining the necessary bandwidth and minimizing disruptions. A live migration process often relies on specific network configurations that enable the movement of a virtual machine's state, memory, and network connections across physical hosts. Without a properly tagged migration VLAN, the process might encounter connectivity issues, slower performance, or even failure due to the inability of the migrating virtual machines to access the necessary resources. In the context of the other choices, while they each play important roles in the overall migration process — such as ensuring that appropriate storage is provisioned (NFS LUNs), configuring zoning for storage traffic (HBAs), and prepping mirror VMs on new hosts — they do not directly address the immediate requirement of establishing the necessary network paths for migration. Thus, tagging the live migration VLAN is the foundational step that must be completed first to support the successful migration of virtual machines.