You need to configure a new Company switch for trunking. Which switch command enables a trunking protocol that appends a four byte CRC to the packet？（）
- A、 CompanySwitch（config-if）#switchport trunk encapsulation dot1q
- B、 CompanySwitch（config-if）#switchport trunk encapsulation itef
- C、 CompanySwitch（config-if）#switchport trunk encapsulation fddi
- D、 CompanySwitch（config-if）#switchport trunk encapsulation isl
- E、 None of the other alternatives apply
正确答案:D
答案解析:有
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