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单选题
Using more than one label on a single packet is required in what context？（）
A
MPLS TE
B
MPLS VPN
C
When CEF switching and Label switching is done
D
In all the above circumstances
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考题
单选题Using more than one label on a single packet is required in what context？（）A
MPLS TEB
MPLS VPNC
When CEF switching and Label switching is doneD
In all the above circumstances
考题
单选题可插入多行注释的 JavaScript 语法是？（）A
/*This comment has more than one line*/ B
//This comment has more than one line// C
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