Which two of these are recommended practices with trunks? （）

• 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.