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Which header or set of headers does CRTP compress？ （）
- A、Layer 2
- B、Layer 3
- C、Layer 4
- D、Layer 2 and Layer 3
- E、Layer 3 and Layer 4
参考答案
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单选题Where is the MPLS label imposed？（）A
after the Layer 3 header and before the Layer 2 payloadB
after the Layer 3 header and before the Layer 4 payloadC
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单选题Which header or set of headers does CRTP compress？ （）A
Layer 2B
Layer 3C
Layer 4D
Layer 2 and Layer 3E
Layer 3 and Layer 4
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