To provide quality of service （QoS） for voice traffic in an IEEE 802.1 q network， which class of service （CoS） value should be used in the 3-bit， user priority bits （PRI） field？ （）
- A、The PRI field should contain the Cos value of 010
- B、The PRI field should contain the Cos value of 011
- C、The PRI field should contain the Cos value of 100
- D、The PRI field should contain the Cos value of 101
- E、The PRI field should contain the Cos value of 110
- F、The PRI field should contain the CoS value of 111
正确答案:D
答案解析:有
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