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单选题
由于802.1p优先级（CoS字段）包含在802.1q标签中，所以只有“tagged”包才会有802.1p优先级。（ ）
A
错
B
对
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解析：
更多 “单选题由于802.1p优先级（CoS字段）包含在802.1q标签中，所以只有“tagged”包才会有802.1p优先级。（ ）A 错B 对” 相关考题
考题
在配置灵活QinQ时,如果仅指定报文802.1P优先级,则对入报文的外层VLAN要求是()
A.入报文的外层VLAN应和端口配置的PVID一致，否则丢弃B.不会关注入报文外层VLAN ID的值C.对外层VLAN的要求和配置的端口类型是Hybrid或Trunk无关D.只要外层VLAN的802.1P优先级匹配，就会打上S-VLAN
考题
PTN网络中QOS优先级映射关系中：在上行方向，若基站过来的报文不带VLAN，则根据基站打上的（）映射到LSP、PW（）中。A、TOS；DSCPB、DSCP；EXPC、802.1P；EXPD、802.1P；DSCP
考题
关于优先级的映射和优先级的信任，说法正确的有（）。A、报文进入交换机端口后，会默认根据802.1P的优先级进入队列B、报文进入交换机端口后，会默认根据DSCP的优先级进入队列C、报文进入交换机后，如果要根据802.1P或DSCP值入队列，则必须配置端口信任802.1P或DSCPD、报文进入交换机端口后，默认会根据端口的优先级进入队列
考题
S8016在以太网接口下配置tag-tosenable命令的作用是：（）A、使能接口对802.1Q优先级的支持。B、使能接口对802.1P优先级的支持。C、在802.1Q中表示是否支持TAG的优先级功能。D、在802.1P中表示是否支持VLANTAG的最后3bit表示的优先级。
考题
Which three statements are true about the voice VLAN feature on a Catalyst 2950 switch？ （Choose three.）（） A、 The CoS value is trusted for 802.1p or 802.1q tagged traffic.B、 The voice VLAN feature is disabled by default.C、 The IP phone accepts the priority of all tagged and untagged traffic and sets the CoS value to 4.D、 When the voice VLAN feature is enabled， all untagged traffic is sent according to the default CoS priority of the port.E、 PortFast is automatically disabled when a voice VLAN is configured.F、 The default CoS value for incoming traffic is set to 0.
考题
单选题The voice VLAN feature has been enabled on a new Company Catalyst switch port. What is the effect of this？ （）A
The CoS is trusted for 802.1P or 802.1Q tagged traffic.B
PortFast is disabled on the port.C
Port Security is automatically enabled on a voice VLAN port.D
Untagged traffic is sent according to the default CoS priority of the port.E
None of the other alternatives apply
考题
多选题在配置灵活QinQ时，如果仅指定报文802.1P优先级，则对入报文的外层VLAN要求是（）A入报文的外层VLAN应和端口配置的PVID一致，否则丢弃B不会关注入报文外层VLAN ID的值C对外层VLAN的要求和配置的端口类型是Hybrid或Trunk无关D只要外层VLAN的802.1P优先级匹配，就会打上S-VLAN
考题
多选题You need to configure a new Company Catalyst 3560 switch for a VOIP-enabled office. Which three statements are true about the voice VLAN feature on this switch？（）AThe default CoS value for incoming traffic is set up to 0.BThe CoS value is trusted for 802.1p or 802.1q tagged traffic.CPortFast is automatically disabled when a voice VLAN is configured.DThe voice VLAN feature is disabled by default.EThe IP phone accepts the priority of all tagged and untagged traffic and sets the CoS value to 4.FWhen the voice VLAN feature is enabled， all untagged traffic is sent according to the default CoS priority of the port
考题
单选题Which statement is correct for both the LWAPP and CAPWAP AP upstream 802.1Q tagged wired QoS priority for a non-WMM-associated client frame that is H-REAP locally switched running v5.2?（）A
Wireless client WMM UP classification is translated to a wired DSCP priority.B
Wireless client 802.11p classification is translated to a wired DSCP priority.C
Wireless client WMM UP classification is translated to a wired 802.1p CoS priority.D
Wireless client 802.11p classification is translated to a wired 802.1p CoS priority.E
WLAN configured QoS level is used to set the wired DSCP priority.F
Wired 802.1p CoS priority is not set.
考题
填空题802.1P一共定义了（）个优先级？
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