What ensures that voice packets are given priority throughout the network so that conversations arrive intact?()A.CentrexB.Packet encryptionC.Intelligent call routingD.QoS

题目
What ensures that voice packets are given priority throughout the network so that conversations arrive intact?()

A.Centrex

B.Packet encryption

C.Intelligent call routing

D.QoS

相似考题

1.To maintain a telephone conversation over the Internet. The voice packets must arrive at their destination in ()A.a continuous streamB.a burst streamC.a delayed streamD.a burst mode

2.Refer to the exhibit. A router has a 256 kbps Frame Relay circuit connected to interface serial 0/0. As a large FTP packet is being placed into the hardware transmit queue of interface serial 0/0， a voice packet is placed into the priority queue of that interface. How， and in what order， wi the packets be transmitted？（）A、the voice packet will be transmitted first， followed by the FTP packet in its entiretyB、the voice packet will be transmitted first， followed by the fragmented FTP packetC、the FTP packet will be fragmented and the voice packet will be interleavedD、the FTP packet will be transmitted first in its entirety， follow by the voice packet

3.What are two ways to minimize the delay of VoIP packets that are traversing a network？（）A、Use WFQ， CBWFO， and LLO to prioritize delay-sensitive packetsB、Use WFO， CBWFO， and LLO to compress the payload.C、Give TCP packets priority over UDP packets.D、Use control plane policing for cRTP queuing.E、Use stacker and predictor to compress the payload.

4.Which three statements are true about the data traffic characteristics of voice traffic？ （）A、latency must be kept below 150 msB、latency is not a concern as long as jitter is kept below 30 msC、voice packets do not require a specific type of queuingD、voice packets are rather smallE、voice packets require TCP for rapid retransmission of dropped packetsF、voice packets require a fairly constant bandwidth reserved for voice control traffic as well as forthe voice payload

更多“What ensures that voice packets are given priority throughout the network so that conversations arrive intact?() ”相关问题

  • 第1题：

    To ensure voice packets are kept within the Committed Information Rate （CIR） of a Frame Relaylink， what should be used in the CPE？（）

    • A、 prioritization
    • B、 classification
    • C、 fragmentation
    • D、 traffic shaping

    正确答案:D

  • 第2题：

    Which statement best describes the application of link fragmentation and interleaving （LFI）？（）

    • A、It compresses the Layer 2 payload and marks the packet as a high priority to be transmitted first
    • B、It fragments larger packets and allows VoIP packets to be transmitted in between them.
    • C、It stops the transmission of large packets when priority packets arrive.
    • D、It sends high priority packets in between normal traffic packets.

    正确答案:B

  • 第3题：

    Which three practices are important to the implementation of a DiffServ QoS architecture？（）

    • A、 Because services are allocated throughout the network before the transmission of data begins， traffic classes can be guaranteed QoS services.
    • B、 Traffic classes are marked with Layer 2 markings to allow for more granularity in identifying traffic classes.
    • C、 Traffic classes are marked with Layer 3 markings to allow them to traverse different network types without loss of QoS information.
    • D、 Traffic classes allow networks to provide proper QoS treatment of packets without applications having to request services.
    • E、 Based upon the network capabilities， QoS markings are placed on packets as needed throughout the network to allow for proper QoS treatment of packets.
    • F、 QoS markings are placed on packets as close to the network edge as possible to allow distribution and core devices to determine QoS actions as quickly as possible.

    正确答案:C,D,F

  • 第4题：

    Why is QoS important in a converged network?（）

    • A、Because data does not need to arrive intact, so data transfer rates can be variable
    • B、Because lost voice-data packets must be retransmitted
    • C、Because voice data packets should arrive quickly and sequentially, and with no lost data
    • D、Because voice data packets must follow a single dedicated path through the network

    正确答案:C

  • 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：

    What ensures that voice packets are given priority throughout the network so that conversations arrive intact?（）

    • A、QoS
    • B、Centrex
    • C、Packet encryption
    • D、Intelligent call routing

    正确答案:A

  • 第7题：

    单选题
    A stream of voice packets transmitted over a WAN network encounters differing queuing delays. One router in the path used by the voice packets delays some of the packets for 4 ms while transmitting a large video file， but delays other packets only 2 ms. Another router delays some packets 5 ms， but transmits others in 2 ms. How would you best describe this type of problem？（）
    A

    end-to-end delay

    B

    interference from bulk data traffic

    C

    processing delays

    D

    serialization delays

    E

    jitter


    正确答案： D
    解析： 暂无解析

  • 第8题：

    单选题
    As a network administrator， can you tell me what the root guard feature provides in a bridgednetwork？（）
    A

    It ensures that BPDUs sent by the root bridge are forwarded in a timely manner

    B

    It enforces the root bridge placement in the network

    C

    It ensures that all ports receiving BPDUs from the root bridge are in the forwarding state.

    D

    It ensures that the bridge is elected as root bridge in the network.


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    Which statement best describes the application of link fragmentation and interleaving （LFI）？（）
    A

    It compresses the Layer 2 payload and marks the packet as a high priority to be transmitted first

    B

    It fragments larger packets and allows VoIP packets to be transmitted in between them.

    C

    It stops the transmission of large packets when priority packets arrive.

    D

    It sends high priority packets in between normal traffic packets.


    正确答案： B
    解析： 暂无解析

  • 第10题：

    单选题
    What is required to enable fragmentation of large FTP packets when voice quality on the network is affected by FTP transfers?（）
    A

    Configure TCP header compression on interface

    B

    Configure MPL on the Frame Relay interfaces

    C

    Configure FRF 12 fragmentation on the Frame Relay interfaces

    D

    Fragmentation is not supported with service internetworking


    正确答案： A
    解析： 暂无解析

  • 第11题：

    单选题
    Choose the false statement concerning the use of CiscoWorks Internetwork Performance Monitor (IPM) in a Teleworker deployment.（）
    A

    IPM should not be run on a production network. 

    B

    IPM helps verify if a Service Provider is meeting the Service Level Agreement. 

    C

    IPM contains a database that can store data on latency, jitter, and drops of voice packets over a period of weeks or months. 

    D

    The 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.


    正确答案： B
    解析： 暂无解析

  • 第12题：

    单选题
    Why is QoS important in a converged network?（）
    A

    Because voice data packets must follow a single dedicated path through the network

    B

    Because voice data packets should arrive quickly and sequentially, and with no lost data

    C

    Because lost voice-data packets must be retransmitted

    D

    Because data does not need to arrive intact, so data transfer rates can be variable


    正确答案： C
    解析： 暂无解析

  • 第13题：

    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.

    正确答案:A,D

  • 第14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15题：

    SDM creates a low latency queuing （LLQ） service policy with its associated classes. What are the two types of low latency queuing available using the SDM QoS wizard？（）

    • A、 FIFO queuing， which provides a means to hold packets while they are waiting to exit an interface
    • B、 Priority queuing， which ensures a fixed amount of bandwidth
    • C、 Custom queuing （CQ）， which provides a queuing tool that services all queues， even during times of congestion
    • D、 Bandwidth queuing， which ensures a minimum amount of bandwidth
    • E、 Weighted fair queuing （WFQ）， which classifies packets based on flows

    正确答案:B,D

  • 第16题：

    As a network administrator， can you tell me what the root guard feature provides in a bridgednetwork？（）

    • A、It ensures that BPDUs sent by the root bridge are forwarded in a timely manner
    • B、It enforces the root bridge placement in the network
    • C、It ensures that all ports receiving BPDUs from the root bridge are in the forwarding state.
    • D、It ensures that the bridge is elected as root bridge in the network.

    正确答案:B

  • 第17题：

    What are two ways to minimize the delay of VoIP packets that are traversing a network？ （）

    • A、 Use WFQ， CBWFQ， and LLQ to prioritize delay-sensitive packets.
    • B、 Use WFQ， CBWFQ， and LLQ to compress the payload.
    • C、 Give TCP packets priority over UDP packets.
    • D、 Use control plane policing for cRTP queuing.
    • E、 Use stacker and predictor to compress the payload.

    正确答案:A,E

  • 第18题：

    A stream of voice packets transmitted over a WAN network encounters differing queuing delays. One router in the path used by the voice packets delays some of the packets for 4 ms while transmitting a large video file， but delays other packets only 2 ms. Another router delays some packets 5 ms， but transmits others in 2 ms. How would you best describe this type of problem？（）

    • A、end-to-end delay
    • B、interference from bulk data traffic
    • C、processing delays
    • D、serialization delays
    • E、jitter

    正确答案:E

  • 第19题：

    多选题
    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.


    正确答案： D,B
    解析： 暂无解析

  • 第20题：

    多选题
    Which two statements about the QoS policy generation phase of the Cisco SDM QoS wizard are true？ （）
    A

    The SDM QoS wizard will create two real-time traffic classes to handle VoIP and voice signaling packets.

    B

    The SDM QoS wizard will create three real-time traffic classes to handle VoIP， voice signaling， and video packets.

    C

    The SDM QoS wizard will create four real-time traffic classes to handle VoIP， voice signaling， video， and video streaming packets.

    D

    The SDM QoS wizard will create two business-critical traffic classes to handle transactional and network management packets.

    E

    The SDM QoS wizard will create three business-critical traffic classes to handle transactional， network management， and routing packets.

    F

    The SDM QoS wizard will create four business-critical traffic classes to handle transactional， network management， routing， and best-effort packets.


    正确答案： C,F
    解析： 暂无解析

  • 第21题：

    单选题
    Refer to the exhibit. A router has a 256 kbps Frame Relay circuit connected to interface serial 0/0. As a large FTP packet is being placed into the hardware transmit queue of interface serial 0/0， a voice packet is placed into the priority queue of that interface. How， and in what order， wi the packets be transmitted？（）
    A

    the voice packet will be transmitted first， followed by the FTP packet in its entirety

    B

    the voice packet will be transmitted first， followed by the fragmented FTP packet

    C

    the FTP packet will be fragmented and the voice packet will be interleaved

    D

    the FTP packet will be transmitted first in its entirety， follow by the voice packet


    正确答案： A
    解析： 暂无解析

  • 第22题：

    单选题
    To ensure voice packets are kept within the Committed Information Rate (CIR) of a Frame Relay link, what should be used in the CPE?（）
    A

    prioritization

    B

    classification

    C

    fragmentation

    D

    traffic shaping


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    What is the WMM user priority of the packets going downstream to the client when the client does not support TSPEC but the Cisco WLC has ACM enabled and WLAN priority is set to Platinum?（）
    A

    background

    B

    best effort

    C

    voice

    D

    video


    正确答案： B
    解析： 暂无解析

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