Assuming there are no network problemsand that all servers are up and running, where is the problem located?

A VirtualCenter login that worked correctly in the past is suddenly no longer working. It
fails to authenticate with the previous login ID. Assuming there are no network problems
and that all servers are up and running, where is the problem located?

A.
in the VirtualCenter database’s security tables

B.
in the VirtualCenter management agent on the host

C.
in the VirtualCenter management server’s security functionality

D.
in the user’s account properties in Active Directory

E.
in the Virtual Infrastructure client’s security configuration settings

Explanation:
Basic System Administration ESX Server 3.5, ESX Server 3i version 3.5 VirtualCenter
2.5, page 265.
VirtualCenter users – Authorized users for VirtualCenter are those included in the
Windows domain list referenced by VirtualCenter or local Windows users on the
VirtualCenter host. You cannot use VirtualCenter to manually create, remove, or
otherwise change users.
If you need to manipulate the user list or change user passwords, you must do so through
the tools you normally use to manage your Windows domain.