关于Voice VLAN的工作模式，说法正确的有（）。A、Voice VLAN的工作模式包含自动和手动两种B、自动模式下，系统会识别IP Phone发出的报文，如果匹配为语音报文，则将连接IP Phone的端口加入Voice VLANC、手动模式下，需要手工将IP Phone加入Voice VLAN中D、手动模式下，系统将不会向端口下发ACL
关于Voice VLAN的工作模式，说法正确的有（）。
- A、Voice VLAN的工作模式包含自动和手动两种
- B、自动模式下，系统会识别IP Phone发出的报文，如果匹配为语音报文，则将连接IP Phone的端口加入Voice VLAN
- C、手动模式下，需要手工将IP Phone加入Voice VLAN中
- D、手动模式下，系统将不会向端口下发ACL
相关考题：
网络管理员希望将大楼A中的主机划分到编号分别为20和30的VLAN中,下列关于VLAN配置的说法中哪项正确()。 A.可以为这些VLAN命名B.VLAN信息保存在启动配置中C.手动创建的非默认VLAN必须使用扩展范围的VLAN编号D.网络管理员可在全局配置模式或VLAN数据库模式下创建VLAN
下列关于命令配置模式的叙述,正确的为()。 A、设置端口PVID的配置命令模式为以太接口配置模式B、向VLAN中增加端口的配置命令模式是全局模式C、添加VLAN的配置命令模式为全局配置模式D、设置相应的端口链路为干道链路的配置命令模式为以太网接口模式
关于Voice VLAN的工作模式，说法正确的是（）。A、Voice VLAN的工作模式包含自动和手动两种B、自动模式下，系统会识别IP Phone发出的报文，如果匹配为语音报文，则将连接IP Phone的端口加入V.oice VLANC、手动模式下，需要手工将IP Phone加入Voice VLAN中D、手动模式下系统将不会向端口下发ACL
下面说法正确的是（）A、MSTP和RSTP能够互相识别对方的协议报文，可以互相兼容B、在STP兼容模式下，设备的各个端口将向外发送STP BPDU报文C、在RSTP模式下，设备的各个端口将向外发送RSTP BPDU报文，当发现与STP设备相连时，该端口会自动迁移到STP兼容模式下工作D、在MSTP模式下，设备的各个端口将向外发送MSTP BPDU报文，当发现某端口与STP设备相连时，该端口会自动迁移到STP兼容模式下工作
During voice implementation， which two required items are configured at an access layer switch connected to an IP phone to provide VoIP communication？（）A、allowed codecsB、native VLANC、auxiliary VLAND、Cisco Unified Communications Manager IP addressE、RSTP
You are a network administrator of a large investor relations company that uses a switchednetwork to carry both data and IP telephony services. Why should you carry voice traffic on aseparate VLAN？（）A、IP phones require inline power and must be in separate VLAN to receive inline powerB、IP telephony applications require prioritization over other traffic as they are more delaysensitiveC、IP phones can only receive IP addresses through DHCP if they are in separate VLAND、The CDP frames from the IP phone can only be recognized by the switch if the phone is in anauxiliary vlan
Which two statements are true about voice VLANs？（）A、Voice VLANs are only used when connecting an IP phone and a host to distinct switch portsB、Access ports that are configured with voice VLANs will always trust the CoS that is received from IP phonesC、Access ports that are configured with voice VLANs may or may not override the CoS value that is received from an IP phoneD、Voice VLANs are configured using the switchport voice vlan vlan-ID interface configuration commandE、Voice VLANs provide a trunking interface between an IP phone and an access port on a switch to allow traffic from multiple devices that are connected to the portF、Enabling Voice VLAN on a switch port will automatically configure the port to trust the incoming CoS markings
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？（）A、The default CoS value for incoming traffic is set up to 0.B、The CoS value is trusted for 802.1p or 802.1q tagged traffic.C、PortFast is automatically disabled when a voice VLAN is configured.D、The voice VLAN feature is disabled by default.E、The IP phone accepts the priority of all tagged and untagged traffic and sets the CoS value to 4.F、When the voice VLAN feature is enabled， all untagged traffic is sent according to the default CoS priority of the port
关于AH、ESP的传输和隧道模式，下列描述正确的有（）A、在传输模式下，AH协议验证IP报文的数据部分和IP报头中的不变部分B、在隧道模式下，AH协议验证全部的原始IP报文和封装后新IP头中的不变部分C、在传输模式下，ESP协议对IP报文的有效数据进行加密D、在隧道模式下，ESP协议对整个原始IP报文进行加密
关于Voice VLAN的端口过滤模式，说法正确的有（）。A、Voice VLAN的端口过滤模式可以分为安全模式和普通模式两种B、对于普通模式下，端口力口入Voice VLAN后设备不再检验报文的MAC地址C、安全模式下，设备将对每一个要进入Voice VLAN传输的报文都进行MAC匹配检査D、缺省情况下，Voice VLAN工作在普通模式
如果交换机的某个端口下同时开启了基于端口的VLAN、基于MAC地址的VLAN、基于协议的VLAN和基于IP子网的VLAN，则缺省情况下，VLAN将按照顺序进行匹配（）。A、端口VLANMAC VLAN协议VLAN IP子网VLANB、端口VLAN P子网VLAN端口VLAN MAC VLANC、MAC VLAN端口VLAN协议VLAN子网VLAND、MAC VLAN子网VLAN协议VLAN端口VLAN
如何将 en.1.1.x设置成三个IP ,三个VLAN ,一个端口的工作模式,并将VLAN tag 打开 IP 地址分别为 10.2.2.1 ,10.2.3.1,10.2.4.1 子网掩码 都为255.255.255.0 VLAN ID 分别为 200 (sig),201(voice),202(oam);
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.
Which statement is true about voice VLANs？ （）A、When the voice VLAN feature is enabled， all untagged voice and data traffic is sent through the voice VLAN.B、The voice VLAN feature is enabled by default.C、The IP phone overrides the priority of all incoming data traffic （tagged and untagged） and sets the CoS value to 0.D、The default CoS value is 1 for incoming voice and data traffic.
Which of the following is not information provided from an IP phone to a Catalyst switch using CDP？（）A、 device PoE requirementsB、 device IP addressC、 device voice VLAN IDD、 device platform
What protocol does an IP phone use to learn the voice VLAN ID it should use for voice traffic？（）A、VTPB、802.1 qC、CDPD、Skinny Station Protocol
单选题You are a network administrator of a large investor relations company that uses a switchednetwork to carry both data and IP telephony services. Why should you carry voice traffic on aseparate VLAN？（）AIP phones require inline power and must be in separate VLAN to receive inline powerBIP telephony applications require prioritization over other traffic as they are more delaysensitiveCIP phones can only receive IP addresses through DHCP if they are in separate VLANDThe CDP frames from the IP phone can only be recognized by the switch if the phone is in anauxiliary vlan
单选题Which of the following is not information provided from an IP phone to a Catalyst switch using CDP？（）A device PoE requirementsB device IP addressC device voice VLAN IDD device platform
单选题What protocol does an IP phone use to learn the voice VLAN ID it should use for voice traffic？（）AVTPB802.1 qCCDPDSkinny Station Protocol
单选题Refer to the exhibit. Which statement is true about a voice VLAN？（）A Physically the voice network and the data network are separate.B The voice traffic will normally be on a different IP subnet than will the data traffic.C End user intervention is necessary to place the phone into the proper VLAN.D The same security policy should be implemented for both voice and data traffic.E The data VLAN must be configured as the native VLAN.
多选题Which two statements are true about voice VLANs？（）AVoice VLANs are only used when connecting an IP phone and a host to distinct switch portsBAccess ports that are configured with voice VLANs will always trust the CoS that is received from IP phonesCAccess ports that are configured with voice VLANs may or may not override the CoS value that is received from an IP phoneDVoice VLANs are configured using the switchport voice vlan vlan-ID interface configuration commandEVoice VLANs provide a trunking interface between an IP phone and an access port on a switch to allow traffic from multiple devices that are connected to the portFEnabling Voice VLAN on a switch port will automatically configure the port to trust the incoming CoS markings
多选题Which three statements are true about the voice VLAN feature on a Catalyst 2950 switch？ （Choose three.）（）AThe CoS value is trusted for 802.1p or 802.1q tagged traffic.BThe voice VLAN feature is disabled by default.CThe IP phone accepts the priority of all tagged and untagged traffic and sets the CoS value to 4.DWhen the voice VLAN feature is enabled， all untagged traffic is sent according to the default CoS priority of the port.EPortFast is automatically disabled when a voice VLAN is configured.FThe default CoS value for incoming traffic is set to 0.
单选题Refer to the exhibit. Which statement is true about a voice VLAN？（）A Physically the voice network and the data network are separateB The voice traffic will normally be on a different IP subnet than will the data trafficC End user intervention is necessary to place the phone into the proper VLAND The same security policy should be implemented for both voice and data trafficE The data VLAN must be configured as the native VLAN
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
单选题Which statement is true about voice VLANs？ （）AWhen the voice VLAN feature is enabled， all untagged voice and data traffic is sent through the voice VLAN.BThe voice VLAN feature is enabled by default.CThe IP phone overrides the priority of all incoming data traffic （tagged and untagged） and sets the CoS value to 0.DThe default CoS value is 1 for incoming voice and data traffic.