Which of the following should be configured to provide priority to voice traffic?（）A、Port mirroringB、DMZC、QosD、Trunking
Which of the following should be configured to provide priority to voice traffic?（）
- A、Port mirroring
- B、DMZ
- C、Qos
- D、Trunking
相关考题：
Which of the following is required if ports from VLANs on two separate switches need to broadcastto each other?() A. Port mirroringB. VPNC. TrunkingD. Port authentication
Which of the following features would BEST be used to optimize real－time voice and video chat?()(Select TWO) A. Load balancingB. Caching enginesC. QosD. Fault tolerance systemsE. Traffic shaping
Which of the following should be configured to provide priority to voice traffic?() A. Port mirroringB. DMZC. QosD. Trunking
Which three QoS mechanisms can be configured to improve VoIP quality on a converged network？（）A、The use of a queuing method that will give VoIP traffic strict priority over other traffic B、The use of RTP header compression for the VoIP traffic.C、The proper classification and marking of the traffic as close to the source as possibleD、The use of 802.1QinQ trunking for VoIP trafficE、The use of WRED for the VoIP traffic
What does the interface subcommand switchport voice vlan 222 indicate？（）A、The port is configured for both data and voice traffic.B、The port is fully dedicated to forwarding voice traffic.C、The port will operate as an FXS telephony port.D、Voice traffic will be redirected to VLAN 222.
You have configured voice VLANs on Catalyst switch R1. Which two statements are true about the operation of voice VLANs on this device？ （）A、 When the voice VLAN feature is enabled， all untagged traffic is sent according to the default CoS priority of the port.B、 Enabling voice VLANs enables the switch to create multiple queues for traffic that is entering a port.C、 When voice VLANs are configured on a trunk link， UplinkFast must also be enabled.D、 Voice VLANs are configured to enable the switch to forward frames marked with the proper CoS values over separate physical links.E、 Enabling voice VLANs enables the switch to forward frames with a specific 802.1P marking.
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
Each port that is configured to use LACP has an LACP port priority. Which statements are true about LACP port priority？ （）A、 Port priority value can be configured between 1 and 65535.B、 A higher port priority value means a higher priority of LACP.C、 Port priority can be configured so that specific links can be chosen as active links rather than the hot standby links within the port channel.D、 LACP uses the port priority with the port number to form the port identifier.E、 LACP Port priority default value should always be changed
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.
When you enable port security on an interface that is also configured with a voice VLAN， what is the maximum number of secure MAC addresses that should be set on the port？（）A、No more than one secure MAC address should be set.B、The default will be set.C、The IP phone should use a dedicated port， therefore only one MAC address is needed per port.D、No value is needed if the switchport priority extend command is configured. E、No more than two secure MAC addresses should be set.
Which statement is NOT a key QoS recommended requirement for voice bearer traffic?（）A、Voice traffic should be marked to DSCP EF per the QoS baseline and RFC3246.B、Voice traffic loss should be no more than 3%.C、One-way latency （mouth-to-ear） should be less than 150 msec.D、Average one way jitter should be targeted to less than 30 msec.E、21-320 Kbps of guaranteed priority bandwidth is required per call depending on sample rate，codec，and layer 2 overhead.
Which two statements correctly identify factors to consider when Configuring WAN QoS？（）A、Voice Traffic uses Assured ForwardingB、Voice Signaling traffic uses Assured ForwardingC、Voice Signaling traffic uses priority queuingD、Voice Traffic uses priority queuingE、Voice signaling traffic should use priority queuing with Assured Forwarding
A switch port on TK1 is being configured to support 802.1Q trunking. Which of the following are true about 802.1Q trunking？（）A、Both switches must be in the same VTP domain.B、The encapsulation type of both ends of the trunk does not have to match.C、The native VLAN on both ends of the trunk must be VLAN 1.D、802.1Q trunking can only be configured on a Layer 2 port.E、In 802.1Q trunking， all VLAN packets are tagged on the trunk link， except the native VLAN.
An administrator has purchased monitoring software that can be configured to alert administrators when hardware and applications are having issues. All devices are configured with SNMP, but the administrator wants to further secure the SNMP traffic. Which of the following settings would BEST provide additional monitoring security?（）A、Setting up a custom community nameB、Configuring the network to block traffic on port 161C、Configuring the Windows Firewall to block port 161D、Setting SNMP to read only on the devicesE、Installing new MIBs
Which of the following features would BEST be used to optimize real-time voice and video chat?（）(Select TWO)A、Load balancingB、Caching enginesC、QosD、Fault tolerance systemsE、Traffic shaping
Prioritizing traffic between data and voice is defined as which of the following?（）A、Caching enginesB、Proxy serverC、QoSD、Load balancing
Which of the following is required if ports from VLANs on two separate switches need to broadcastto each other?（）A、Port mirroringB、VPNC、TrunkingD、Port authentication
Rewrite rules are used in which CoS scenario?（）A、When a single device is configured to provide differentiated services.B、When multiple devices in a network are configured to use CoS to provide differentiated services.C、When a device is used to connect to another autonomous system.D、When CoS is used to classifiy traffic as low priority.
多选题You have configured voice VLANs on Catalyst switch R1. Which two statements are true about the operation of voice VLANs on this device？ （）AWhen the voice VLAN feature is enabled， all untagged traffic is sent according to the default CoS priority of the port.BEnabling voice VLANs enables the switch to create multiple queues for traffic that is entering a port.CWhen voice VLANs are configured on a trunk link， UplinkFast must also be enabled.DVoice VLANs are configured to enable the switch to forward frames marked with the proper CoS values over separate physical links.EEnabling voice VLANs enables the switch to forward frames with a specific 802.1P marking.
多选题An administrator has purchased monitoring software that can be configured to alert administrators when hardware and applications are having issues. All devices are configured with SNMP， but the administrator wants to further secure the SNMP traffic. Which of the following settings would BEST provide additional monitoring security？（）ASetting up a custom community nameBConfiguring the network to block traffic on port 161CConfiguring the Windows Firewall to block port 161DSetting SNMP to read only on the devicesEInstalling new MIBs
单选题What does the interface subcommand switchport voice vlan 222 indicate？（）AThe port is configured for both data and voice traffic.BThe port is fully dedicated to forwarding voice traffic.CThe port will operate as an FXS telephony port.DVoice traffic will be redirected to VLAN 222.
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
单选题Which of the following should be configured to provide priority to voice traffic?（）APort mirroringBDMZCQosDTrunking
单选题When you enable port security on an interface that is also configured with a voice VLAN， what is the maximum number of secure MAC addresses that should be set on the port？（）ANo more than one secure MAC address should be set.BThe default will be set.CThe IP phone should use a dedicated port， therefore only one MAC address is needed per port.DNo value is needed if the switchport priority extend command is configured. ENo more than two secure MAC addresses should be set.
单选题If voice and data traffic will be sent and received via a WAN links， what must be configured to provide a certain amount of dedicated bandwidth and to prioritize the voice traffic over other types of network traffic？（）AIPSec VPNBQoS mechanismCFirewallDNATEEIGRP routing protocolFStatic routing
多选题Each port that is configured to use LACP has an LACP port priority. Which statements are true about LACP port priority？ （）APort priority value can be configured between 1 and 65535.BA higher port priority value means a higher priority of LACP.CPort priority can be configured so that specific links can be chosen as active links rather than the hot standby links within the port channel.DLACP uses the port priority with the port number to form the port identifier.ELACP Port priority default value should always be changed