單項選擇題Jitter is causing problems with the VOIP application in the network. What causes network jitter?()

A.Variable queue delays
B.Packet drops
C.Transmitting too many small packets
D.Compression


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1.多項選擇題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?()

A.Mis-routed packets
B.Excess jitter
C.Delay of critical traffic
D.Packet loss due to congestion
E.Data link layer broadcast storms
F.FTP connections unsuccessful

2.單項選擇題

Refer to the exhibit. What is the effect when the switchport priority extend cos 3 command isconfigured on the switch port interface connected to the IP phone?()

A.Effectively, the trust boundary has been moved to the PC attached to the IP phone
B.The computer is now establishing theCoS value and has effectively become the trust boundary
C.The IP phone is enabled to override with aCoS value of 3 the existing CoS marking of the PCattached to the IP phone
D.The switch will no longer tag incoming voice packets and will extend the trust boundary to thedistribution layer switch
E.RTP will be used to negotiate aCoS value based upon bandwidth utilization on the link

5.單項選擇題

Look at the graphic below, the connectivity between Cisco IP phone access port and theworkstation CK-PC has been established, how to manage the traffic?()

A.The IP phone access port will override the priority of the frames received from the CK-PC
B.The IP phone access port would trust the priority of the frames received from the CK-PC
C.The switch port FaO/4 would neglect the priority of the frames received from the CK-PC
D.The switch port FaO/4 would trust the priority for the frames received from the CK-PC

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