多选题Which two forwarding classes have bandwidth assigned when CoS is not explicitly configured inJUNOS software?（）Abest effort (BE)Bnetwork control (NC)Cassured forwarding (AF)Dexpedited forwarding (EF)
多选题
Which two forwarding classes have bandwidth assigned when CoS is not explicitly configured inJUNOS software?（）
A
best effort (BE)
B
network control (NC)
C
assured forwarding (AF)
D
expedited forwarding (EF)
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