单项选择题
A. The interface actively attempts to convert the link to a trunk link.
B. The interface is put into permanent trunking mode but prevented from generating DTP frames.
C. The interface is put into permanent trunking mode and negotiates to convert the link into a trunk link.
D. The interface is put into a passive mode， waiting to convert the link to a trunk link.
E. None of the other alternatives apply
多项选择题 The core Company switches are configured to use 802.1Q trunks. Which three statements are correct with regard to the IEEE 802.1Q standard？（）
多项选择题 Refer to the exhibit. On the basis of the output generated by the show commands， which two statements are true？（）
单项选择题 The Company core switches use 802.1Q trunks to connect to each other. How does 802.1Q trunking keep track of multiple VLANs？ （）