What is the possible cause of the issue?

During an upgrade of VMware vSphere 4.1 to vSphere 5.0, several virtual machines appeared to
have lost network configuration. What is the possible cause of the issue?

A.
DHCP server not available

B.
Incorrect order of upgrade implementation steps

C.
Incorrect drivers.

Explanation:

This can be experienced when migrating from a virtual machine hardware level and have an
oldversion of VMware tools installed. The guest operating system may not understand the
hardware and maycreate or lose information such as the MAC address and network settings. By

upgrading VMware tools firstand then upgrading the hardware the correct drivers and software are
present for a non-impacting upgrade.