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
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?（）
A
DSL with 128k uplink /128k downlink
B
cable with 256k uplink /256k downlink
C
DSL with 128k uplink /768k downlink
D
cable with 256k uplink /1.4M downlink
参考解析
解析：
暂无解析
相关考题：
Which of the following is not part of the quality assurance process?(73)A．Operational definitionsB．Quality policyC．Quality auditsD．Quality improvement
A PM wanted to show management，visually how quality controls were affecting processes．The best tool to accomplish this is(74) .A．DiagramsB．HistogramsC．FlowchartsD．Control charts
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
● Which of the following is not part of the quality assurance process?（73）（73）A．Operational definitionsB．Quality policyC．Quality auditsD．Quality improvement
元素电势图EBθ：0.93 0.56 0.33 1.065BrO4-————BrO3-————BrO-————Br2————Br-易发生歧化反应的物质是（）。A、BrO4-B、BrO3-C、BrO-D、Br2
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.
Quality planning tools are often used to help plan effective quality management activities.（ ） is one of such tools,which involves company actual or planned project practices to those or other projects to generate ideas for improvementand to provide a basis by which to measure performance.A、BenchmarkingB、Quality metricC、Quality checklistD、Brainstorming
Quality planning tools are often used to help plan effective quality management activities . （）is one of such tools, which involves company actual or planned project practices to those or other projects to generate ideas for improvement and to provide a basis by which to measure performance.A、BenchmarkingB、Quality metricC、Quality checklistD、Brainstornung
Your Service Provider does not support Link Fragmentation and Interleave, but upstream serialization delay on your broadband link is affecting voice quality. Which two mitigation strategies are viable?（）A、Upgrade your residential broadband service to at least 768kbps uplink.B、Switch your home router to use PPP encapsulation.C、Use the ip tcp adjust-mss interface command.D、Employ QoS techniques to drop large data packets.E、Use traffic shaping to interrupt large data packets.
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
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
A branch router is configured with an egress QoS policy that was designed for a total number of 10 concurrent VOIP calls.Due to expansion， 15 VOIP calls are now running over the link， but after the 14th call was established， allcalls were affected and the voice quality was dramatically degraded.Assuming that there is enough bandwidth on the link for all of this traffic， which part of the QoS configuration should be updated due to the new traffic profile？（）A、Increase the shaping rate for the priority queue.B、Remove the policer applied on the priority queue.C、Remove the shaper applied on the priority queue.D、Increase the policing rate for the priority queue.
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
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.
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.
多选题To have the best possible voice quality and to utilize effectively the available bandwidth， which queuing and compression mechanisms need to be used？（）Aclass-based weighted fair queuing （CBWFQ）Blow latency queuing （LLQ）Cpriority queuing （PQ） or custom queuing （CQ）DReal-Time Transport Protocol （RTP） header compressionETCP header compressionFUDP header compression
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
单选题Which statement is true about the Call Admission Control （CAC） feature in VoIP networks？（）A CAC is used to allocate enough bandwidth for the number of calls that are allowed on the VoIP network.B CAC is used to protect the quality of the voice calls by preventing call establishment if enough resources are not available on the network.C CAC provides queuing mechanisms for voice calls if the packets exceed the configured or budgeted rate.D In a VoIP network the CAC can be replaced with the LLQ QoS mechanism if it has been properly implemented.
单选题Which of the following statement is true according to paragraph 4?AMen leaders should consult colleagues and subordinates more often.BFemale leaders’ success is due to their imitating male leaders.CMen and women are different in their leadership style.DDecisiveness is an important quality for a successful politician.
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.
问答题如果看到Voice quality models initialization failed消息，有那几步的解决方案？