Voice quality is bad due to high delay and jitter on a link. Which two actions will improve the quality  of voice calls?()A、Increase the queue size of the voice class.B、Guarantee bandwidth during congestion to the voice class with a bandwidth command.C、Increase the tx-ring of the egress interface.D、Implement LLQ for the voice class.E、Decrease the rx-ring of the egress interface.F、Decrease the queue size of the voice class.

Voice quality is bad due to high delay and jitter on a link. Which two actions will improve the quality  of voice calls?()

  • A、Increase the queue size of the voice class.
  • B、Guarantee bandwidth during congestion to the voice class with a bandwidth command.
  • C、Increase the tx-ring of the egress interface.
  • D、Implement LLQ for the voice class.
  • E、Decrease the rx-ring of the egress interface.
  • F、Decrease the queue size of the voice class.

相关考题:

The approaching 4G mobile communication systems are projected to ( ) still remaining problems of 3G systems and to provide ( ) new services ,from high-quality voice to high-definition video to high data-rate wireless channels.[1分]A.solveB.solvingC.reduceD.increase

Which service does the ERX Edge Router support with a virtual router?() A.voice over IPB.wholesale servicesC.IP quality of serviceD.SNMP management

When designing a converged network, which measures can be taken at the building access layer to help eliminate latency and ensure end-to-end quality of service can be maintained? () A. rate limit voice trafficB. configure spanning-tree for fast link convergenceC. isolate voice traffic on separate VLANsD. classify and mark traffic close to the source

What can be used to maintain the voice quality on a link by limiting the number of calls that can be active at any given time?()A、 Call Management Link AgentB、 Traffic policingC、 Call Admission ControlD、 QoS Link Congestion ManagementE、 Oversubscription Link Detection

Which two statements are true about Voice over IP (VoIP) packet delivery in a digital infrastructure? ()A、 Packets can arrive out of order.B、 Packets must take the same path to the destination.C、 Once packets are received at the destination router, the router performs sampling to ensure the quality of the voice traffic.D、 Packets can experience varying delays across the network.E、 Packets containing voice samples are sequentially numbered by default, allowing for reordering upon arrival at the terminal router along the path.

The Company is rolling out Cisco’s Architecture for Voice, Video and Integrated Data (AVVID).   Which of the following choices represent the fundamental intelligent network services in Cisco’s  AVVID? ()A、 Quality of Service (QoS)B、 Intelligent platformsC、 Mobility and scalabilityD、 SecurityE、 High availability

An important limitation of the Cisco Business Ready Teleworker solution is_____.()A、IP phone extensions for teleworkers must be chosen carefully so not to duplicate campus phone extensions.B、More security exposure exists due to lack of support for Intrusion Detection System and URL filtering for teleworker originated traffic.C、Compressed RTP and IPSec are not compatible and result in no bandwidth savings.D、Broadband modems must support Quality of Service for adequate voice quality.

一般来说,用户上网要通过因特网服务提供商,其英文缩写为()。A、ICPB、ICQC、ISPD、ISQ

What is the advantage of using DTX for an MS? ()A、Increases battery lifeB、Better Bit Error Rate (BQRE)C、Higher strengthD、Increased bit rateE、Better voice quality

如果看到Voice quality models initialization failed消息,有那几步的解决方案?

The Company is rolling out Cisco’s Architecture for Voice, Video and Integrated Data (AVVID).Which of the following choices represent the fundamental intelligent network services in Cisco’sAVVID?()A、Quality of Service (QoS)B、Intelligent platformsC、Mobility and scalabilityD、SecurityE、High availability

To ensure quality, what is the maximum end-to-end transit time in milliseconds on a voice network?()A、50B、100C、150D、200E、250

Interface congestion is causing drops in voice packets and TCP packets. The drops result in jerky speech quality and slower FTP traffic flows. Which two technologies would proactively address the TCP transfer rate and the voice problems?()A、CBWFQB、LLQC、traffic shapingD、WRED

You are the network administrator of an enterprise company that just deployed a global IP telephony environment. In order to guarantee good voice quality, you asked your provider to implement QoS on the CE routers of your MPLS network. On your LAN, you have also deployed QoS. Users, however, keep complaining about bad voice quality, and the provider does not see matches on the DSCP values that you have asked him to match upon. What is most likely the problem?()A、The phones are not sending traffic with the correct DSCP value.B、The Cisco CallManager is not marking the traffic correctly.C、This is most likely a bug on the CE routers.D、Your LAN QoS is incorrectly configured.

When designing a converged network, which measures can be taken at the building access layerto help eliminate latency and ensure end-to-end quality of service can be maintained?()A、 rate limit voice trafficB、 configure spanning-tree for fast link convergenceC、 isolate voice traffic on separate VLANsD、 classify and mark traffic close to the source

Which two statements are true about the function of CAC?()A、CAC provides guaranteed voice quality on a link.B、CAC artificially limits the number of concurrent voice calls.C、CAC is used to control the amount of bandwidth that is taken by a call on a link.D、CAC prevents oversubscription of WAN resources that is caused by too much voice traffic.E、CAC allows an unlimited number of voice calls while severely restricting,if necessary,other forms of traffic.F、CAC solves voice congestion problems by using QoS to give priority to UDP traffic.

A network administrator has been receiving work orders about poor voice quality crossing a branch T1. The cause is determined to be users running high bandwidth file sharing applications across the T1 sending large packets delaying the smaller voice streams. Which of the following would improve voice quality?()A、Configure traffic shaping to reduce the bandwidth available to the file sharing application.B、Configure a separate VLAN for the IP phones.C、Install a content caching proxy at the branch to reduce inbound WAN traffic.D、Upgrade switches to provide higher bandwidth ports for workstations and IP phones.

Which service does the ERX Edge Router support with a virtual router?( )A、voice over IPB、wholesale servicesC、IP quality of serviceD、SNMP management

多选题Which two statements are true about the function of CAC?()ACAC provides guaranteed voice quality on a link.BCAC artificially limits the number of concurrent voice calls.CCAC is used to control the amount of bandwidth that is taken by a call on a link.DCAC prevents oversubscription of WAN resources that is caused by too much voice traffic.ECAC allows an unlimited number of voice calls while severely restricting,if necessary,other forms of traffic.FCAC solves voice congestion problems by using QoS to give priority to UDP traffic.

单选题You add the following commands into a routed topology: router eigrp 1 variance 3 traffic-share min across-interfaces. Users now complain about voice quality in your VoIP system. What should be done? ()A Add the command: router eigrp 1 traffic-share voice interface fast 0/0B Reconfigure EIGRP to recognize voice packetsC Remove the variance from the configurationD Reconfigure the VoIP system to use RTP sequence number headersE Use an H '323 gatekeeper for your VoIP system to negotiate an H'245 uneven packet bufferF Reconfigure EIGRP to version 2

单选题Due to limitations affecting voice quality, which of the broadband speeds shown is preferred in order to achieve highest voice quality on a converged data and voice teleworker connection?()ADSL with 128k uplink /128k downlinkBcable with 256k uplink /256k downlinkCDSL with 128k uplink /768k downlinkDcable with 256k uplink /1.4M downlink

多选题Voice quality is bad due to high delay and jitter on a link. Which two actions will improve the quality  of voice calls?()AIncrease the queue size of the voice class.BGuarantee bandwidth during congestion to the voice class with a bandwidth command.CIncrease the tx-ring of the egress interface.DImplement LLQ for the voice class.EDecrease the rx-ring of the egress interface.FDecrease the queue size of the voice class.

单选题What is required to enable fragmentation of large FTP packets when voice quality on the network is affected by FTP transfers?()AConfigure TCP header compression on interfaceBConfigure MPL on the Frame Relay interfacesCConfigure FRF 12 fragmentation on the Frame Relay interfacesDFragmentation is not supported with service internetworking

问答题如果看到Voice quality models initialization failed消息,有那几步的解决方案?

单选题Choose the false statement concerning the use of CiscoWorks Internetwork Performance Monitor (IPM) in a Teleworker deployment.()AIPM should not be run on a production network. BIPM helps verify if a Service Provider is meeting the Service Level Agreement. CIPM contains a database that can store data on latency, jitter, and drops of voice packets over a period of weeks or months. DThe QoS service policy should contain an allocation of sufficient bandwidth in the priority queue (LLQ) for both the SAA probe simulating a voice call and the voice call. If not, voice quality will suffer.

单选题To ensure quality, what is the maximum end-to-end transit time in milliseconds on a voice network?()A 50B 100C 150D 200E 250

单选题What can be used to maintain the voice quality on a link by limiting the number of calls that can be active at any given time?()A Call Management Link AgentB Traffic policingC Call Admission ControlD QoS Link Congestion ManagementE Oversubscription Link Detection