Which two of these are recommended practices with trunks? (Choose two.)
A . use ISL encapsulation
B . use 802.1q encapsulation
C . set ISL to desirable and auto with encapsulation negotiate to support ILS protocol negotiation
D . use VTP server mode to support dynamic propagation of VLAN information across the network
E . set DTP to desirable and desirable with encapsulation negotiate to support DTP protocol
negotiation.
Answer: BE
Explanation:
As a recommended practice, when configuring switch-to-switch interconnections to carry multiple VLANs,set Dynamic Trunking Protocol (DTP) to Desirable and Desirable with Encapsulation Negotiate to support DTP negotiation.