What are too important guidelines to follow when implementing VTP? (Choose two.)

A.
When using secure-mode VTP, configure management domain passwords only
on VTP servers.

B.
Use of the VTP multidomain feature should be restricted to migration and
temporary implementation.

C.
Enabling VTP pruning on a server will enable the feature for the entire
management domain.

D.
All switches in the VTP domain must run the same version of VTP.

E.
CDP must be enabled on all switches in the VTP management domain.

Explanation:
Enabling VTP pruning on a VTP server enables pruning for the entire management domain. Making VLANs pruning-eligible or pruning-ineligible affects pruning eligibility for
those VLANs on that trunk only (not on all switches in the VTP domain).
• All switches in a VTP domain must have the same domain name, but they do not need
to run the same VTP version.
http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3560/software/release/12-2_52_se/configuration/guide/3560scg/swvtp.html#wp1225071