VOIP is being implemented in the network and you need to assess the need for QoS. Which of thefollowing network problems would indicate a need to implement QoS features？（）

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  A .  Hardware address takeover must be configured. B .  IPAT via IP aliasing is required for EtherChannel. C .  EtherChannel must be defined as a separate network. D .  HACMP does not support the fallover of EtherChannel.

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• You work as a network technician at Certkiller .com. Please study the exhibit carefully. The exhibit is an example of which technology being implemented？（）https://assets.asklib.com/images/image2/2018073114112240664.jpg

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• During voice implementation，  which two required items are configured at an access layer switch connected to an IP phone to provide VoIP communication？（）

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• VOIP is being implemented on the Company network. In a properly designed network，  what is the  maximum amount of time a voice package should spend crossing a network？  （）

  A . 90 milliseconds B . 120 milliseconds C . 150 milliseconds D . 240 millisecond

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• 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 possible D . The use of 802.1QinQ trunking for VoIP traffic E . The use of WRED for the VoIP traffic

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• CDE is working. However, the customized PATH environment has not been implemented. Which of the following procedures should be performed to activate the implementation?（）

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• Under which two circumstances should Spanning Tree Protocol be implemented?（）

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• When should traffic shaping be implemented on Frame Relay PVCs？（）

  A . When you want to drop excess traffic above the CIR B . When there is a speed mismatch between the central site and the remote site C . When using Frame Relay SVCs D . When over-subscribing the central site link E . When LLQ is implemented on the Frame Relay PVC F . When Multilink PPP LFI is implemented on the Frame Relay PVC

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• Procedures for the implementation of corrective action should be established by（）.

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• Under which two circumstances should Spanning Tree Protocol be implemented？ （）

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  A . Make all ports private VLAN ports. B . Place all unused ports in native VLAN 1 until needed. C . Proactively configure unused switch ports as access ports. D . Disable Cisco Discovery Protocol globally.

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• VOIP has been implemented at the main office of the Company network. Which two statements  are true about voice packets in a LAN？（）

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• The Cisco AutoQoS feature is being used throughout the Company VOIP network.  Which three  statements about this feature are true？（）

  A . The "mls qos" global configuration command must be entered before configuring AutoQoS. B . CEF must be enabled. C . The "no auto qos voip" command is used to disable Cisco AutoQos and revoke all  configurations generated by Cisco AutoQos. D . CDP must be enabled. E . SNMP must be enabled.

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