What are two design guidelines for VoIP networks? （）A、Delay should be no more than 10 ms.B、Loss should be no more than1 percent.C、Jitter should be less then 40 ms.D、Managed bandwidth is strongly recommended for voice control traffic.

题目

What are two design guidelines for VoIP networks? （）

  • A、Delay should be no more than 10 ms.
  • B、Loss should be no more than1 percent.
  • C、Jitter should be less then 40 ms.
  • D、Managed bandwidth is strongly recommended for voice control traffic.
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更多“What are two design guidelines for VoIP networks? （）A、Delay should be no more than 10 ms.B、Loss should be no more than1 percent.C、Jitter should be less then 40 ms.D、Managed bandwidth is strongly recommended for voice control traffic.”相关问题

  • 第1题：

    Which two statements are true about voice packets in a LAN？ （Choose two.）  （）

    • A、 Voice traffic data flow involves large volumes of large packets.
    • B、 Because a packet loss involves a small amount of data， voice traffic is less affected by packet losses than traditional data traffic is.
    • C、 Voice carrier stream utilizes Real-Time Transport Protocol （RTP） to carry the audio/media portion of VoIP communication.
    • D、 Voice packets are very sensitive to delay and jitter.
    • E、 Voice packets are encapsulated in TCP segments to allow for proper sequencing during delivery.

    正确答案:C,D

  • 第2题：

    Which two statements correctly identify considerations to take into account when deciding onCampus QoS Design elements？ （）

    • A、 Voice needs to be assigned to the hardware priority queue
    • B、 Voice needs to be assigned to the software priority queue
    • C、 Call signaling must have guaranteed bandwidth service
    • D、 Strict-priority queuing should be limited to 50 percent of the capacity of the link
    • E、 At least 33 percent or the link bandwidth should be reserved tor default best effort class

    正确答案:A,C

  • 第3题：

    When your WebLogic Server solution needs to be scaled out with additional capacity and you  Don’t want to add additional hardware, which three techniques should you us?（）

    • A、Assign more than one managed server to a physical hardware that allows better CPU  utilization
    • B、Assign more than one application to one managed server to better utilize threads within a single JVM process
    • C、Assign the same application to more than one managed server to load balance requests  between servers
    • D、Assign the same heap size to the managed server across the cluster for easier control of  memory footprint  
    • E、Create a virtualized environment with hypervisor for an easier solution

    正确答案:B,D,E

  • 第4题：

    What is the Cisco recommended setting for the Cisco Unified Wireless Network WLC Voice Call Admission Control Max RF Bandwidth to support the Cisco Unified Wireless IP Phone 7921G?（）

    • A、nominally 30 percent to best align with Cisco Unified Communications System recommendations
    • B、100 percent to ensure that the VoWLAN calls can use all the available bandwidth, if needed
    • C、system default of 75 percent
    • D、40 to 60 percent
    • E、voice CAC should be left disabled unless wired QoS is configured

    正确答案:D

  • 第5题：

    What are two major sources of delay that can be managed by QoS in voice-enabled networks？（）

    • A、propagation delay
    • B、voice packet serialization delay
    • C、congested egress queues
    • D、header overhead
    • E、packets dropped because of CRC errors

    正确答案:C,D

  • 第6题：

    Which two statements are true about network voice traffic？ （Choose two.）（）

    • A、 Voice traffic is affected more by link speed than FTP traffic is.
    • B、 Voice traffic is affected more by packet delays than FTP traffic is.
    • C、 Voice streams involve larger packet sizes than most TCP network traffic involves.
    • D、 Voice traffic is more sensitive to packet loss than TCP network traffic is.
    • E、 Voice traffic requires QOS mechanisms only in heavily loaded network segments.

    正确答案:B,D

  • 第7题：

    A server is configured with two network cards. To utilize the bandwidth of both network cards at the same time without assigning more than one IP address, which of the following load balancing techniques should be used?（）

    • A、Clustering
    • B、NIC teaming
    • C、OSPF
    • D、VLAN tagging

    正确答案:B

  • 第8题：

    单选题
    If the effective bearing area has been reduced , remedial action should be taken（）
    A

    by more than 5 percent

    B

    by less than 10 percent

    C

    to 95 percent

    D

    to less than 90 percent


    正确答案： C
    解析： 暂无解析

  • 第9题：

    多选题
    What are two design guidelines for VoIP networks? （）
    A

    Delay should be no more than 10 ms.

    B

    Loss should be no more than1 percent.

    C

    Jitter should be less then 40 ms.

    D

    Managed bandwidth is strongly recommended for voice control traffic.


    正确答案： C,B
    解析： 暂无解析

  • 第10题：

    多选题
    What are two design considerations for a WLAN to support voice?（）
    A

    Packet loss is less than one percent.

    B

    Signal strength at cell edge is approximately -67 dBm.

    C

    End-to-end delay is less than 200 ms.

    D

    Cell overlap between APs is 50 percent.


    正确答案： D,B
    解析： 暂无解析

  • 第11题：

    多选题
    Which two statements are true about voice packets in a LAN？ （Choose two.）  （）
    A

    Voice traffic data flow involves large volumes of large packets.

    B

    Because a packet loss involves a small amount of data， voice traffic is less affected by packet losses than traditional data traffic is.

    C

    Voice carrier stream utilizes Real-Time Transport Protocol （RTP） to carry the audio/media portion of VoIP communication.

    D

    Voice packets are very sensitive to delay and jitter.

    E

    Voice packets are encapsulated in TCP segments to allow for proper sequencing during delivery.


    正确答案： B,A
    解析： 暂无解析

  • 第12题：

    单选题
    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.


    正确答案： A
    解析： 暂无解析

  • 第13题：

    When provisioning for Interactive-Video（e，g，video conferencing traffic）which three statementsdepicts the correct requirements？（）

    • A、Loss should be no more than 1 percent.
    • B、One-way latency should be no more than 150 ms
    • C、Jitter should be no more than 30 ms
    • D、Loss should be no more than 3 percent
    • E、One-way latency should be no more than 150/2=75 ms
    • F、Jitter should be no more than 300 ms

    正确答案:A,B,C

  • 第14题：

    What are two design considerations for a WLAN to support voice?（）

    • A、Packet loss is less than one percent.
    • B、Signal strength at cell edge is approximately -67 dBm.
    • C、End-to-end delay is less than 200 ms.
    • D、Cell overlap between APs is 50 percent.

    正确答案:A,B

  • 第15题：

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

    • A、 Voice carrier stream utilizes Real-Time Transport Protocol (RTP) to carry the audio/media  portion of the VoIP communication.  
    • B、 Voice traffic data flow involves large volumes of large packets.  
    • C、 Because a packet loss involves a small amount of data, voice traffic is less affected by packet  losses than traditional data traffic is.  
    • D、 Voice packets are encapsulated in TCP segments to allow for proper sequencing during  delivery. 
    • E、 Voice packets are very sensitive to delay and jitter. 

    正确答案:A,E

  • 第16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？（）

    • 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.

    正确答案:B

  • 第17题：

    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.

    正确答案:B

  • 第18题：

    What are two design guidelines for VoIP networks？（）

    • A、 Delay should be no more than 10 ms.
    • B、 Loss should be no more than 1 percent.
    • C、 Jitter should be less then 40 ms.
    • D、 Managed bandwidth is strongly recommended for voice control traffic.

    正确答案:B,D

  • 第19题：

    多选题
    When provisioning for Interactive-Video（e，g，video conferencing traffic）which three statementsdepicts the correct requirements？（）
    A

    Loss should be no more than 1 percent.

    B

    One-way latency should be no more than 150 ms

    C

    Jitter should be no more than 30 ms

    D

    Loss should be no more than 3 percent

    E

    One-way latency should be no more than 150/2=75 ms

    F

    Jitter should be no more than 300 ms


    正确答案： E,A
    解析： 暂无解析

  • 第20题：

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

    Voice carrier stream utilizes Real-Time Transport Protocol (RTP) to carry the audio/media  portion of the VoIP communication.

    B

    Voice traffic data flow involves large volumes of large packets.

    C

    Because a packet loss involves a small amount of data, voice traffic is less affected by packet  losses than traditional data traffic is.

    D

    Voice packets are encapsulated in TCP segments to allow for proper sequencing during  delivery.

    E

    Voice packets are very sensitive to delay and jitter.


    正确答案： B,D
    解析： 暂无解析

  • 第21题：

    单选题
    A squeeze-grip type carbon dioxide portable fire extinguisher has been partially discharged. It should be（）.
    A

    labeled empty and recharged as soon as possible

    B

    replaced in its proper location if weight loss is no more than 25%

    C

    replaced in its proper location regardless of weight

    D

    replaced in its proper location if weight loss is no more than 15%


    正确答案： C
    解析： 暂无解析

  • 第22题：

    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？（）
    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.


    正确答案： E
    解析： 暂无解析

  • 第23题：

    多选题
    What are two design guidelines for VoIP networks？（）
    A

    Delay should be no more than 10 ms.

    B

    Loss should be no more than 1 percent.

    C

    Jitter should be less then 40 ms.

    D

    Managed bandwidth is strongly recommended for voice control traffic.


    正确答案： D,A
    解析： 暂无解析

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