单选题You are designing your network to be able to use trunks. As part of this process you are comparing the ISL and 802.1Q encapsulation options. All of these statements about the two encapsulation options are correct except which one？ （）A Both support normal and extended VLAN ranges.B ISL is a Cisco proprietary encapsulation method and 802.1Q is an IEEE standard.C ISL encapsulates the original frame.D Both support native VLANs.E 802.1Q does not encapsulate the original frame.
单选题
You are designing your network to be able to use trunks. As part of this process you are comparing the ISL and 802.1Q encapsulation options. All of these statements about the two encapsulation options are correct except which one？ （）
A
Both support normal and extended VLAN ranges.
B
ISL is a Cisco proprietary encapsulation method and 802.1Q is an IEEE standard.
C
ISL encapsulates the original frame.
D
Both support native VLANs.
E
802.1Q does not encapsulate the original frame.
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