Acknowledgements, sequencing, and flow control are characteristics of which OSI layer?（）
- A、Layer 2
- B、Layer 3
- C、Layer 4
- D、Layer 5
- E、Layer 6
- F、Layer 7
正确答案:C
答案解析:有
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Acknowledgements, sequencing, and flow control are characteristics of which OSI layer?（）
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