单选题Which of the following technologies would an Internet Service Provider use to support overlapping customer VLAN ID’s over transparent LAN services？ （）A 802.1q tunnelingB ATMC SDHD IP Over Optical NetworkingE ISL
单选题
Which of the following technologies would an Internet Service Provider use to support overlapping customer VLAN ID’s over transparent LAN services？ （）
A
802.1q tunneling
B
ATM
C
SDH
D
IP Over Optical Networking
E
ISL
参考解析
解析：
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