Which two DTP modes permit trunking between directly connected switches? (Choose two.)

A.
dynamic desirable (VTP domain A) to dynamic desirable (VTP domain A)

B.
dynamic desirable (VTP domain A) to dynamic desirable (VTP domain B)

C.
dynamic auto (VTP domain A) to dynamic auto (VTP domain A)

D.
dynamic auto (VTP domain A) to dynamic auto (VTP domain B)

E.
dynamic auto (VTP domain A) to nonegotiate (VTP domain A)

F.
nonegotiate (VTP domain A) to nonegotiate (VTP domain B)

Explanation:
There are three DTP modes of operation:
• Trunk
• Dynamic desirable
• Dynamic auto
For dynamic trunking to be successful VTP domain names at the both sides of the trunk must
matches. Also DTP could be switched off by the command switchport nonegotiate. In the later
case the matching of VTP domain names is not required. From the three DTP modes the one (the
dynamic auto) is passive. The trunk will not be created if at the both sides passive mode is used.
Reference:

CCNP SWITCH 642-813 Official Certification Guide, Chapter 4: VLANs and Trunks, p. 70.