Congestion拥塞

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• Which of the following can lead to the contribution of LAN traffic congestion?（）

  A . Too many hosts in a broadcast domain B . Full duplex operation C . Broadcast storms D . Multicasting E . Segmentation F . Low bandwidth

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• 在MSCserver中，Even treporting的哪个event number可以看到C7BUFFER POOLS CONGESTION？（）

  A . EVENTNUMBER=145 B . EVENTNUMBER=201 C . EVENTNUMBER=100 D . EVENTNUMBER=1029

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• 帧中继采用拥塞（）比特来实现拥塞控制。

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• You are experiencing intermittent issues relating to congestion with your network.What are the possible causes of congestion on a LAN?（）

  A . A broadcast domain with too many hosts. B . Full duplex operation. C . Broadcast storms. D . Multicasting. E . Network Segmentation. F . Low bandwidth.

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• RRC Connection Reject，并且其所带的Cause值为“Congestion”，产生这种原因主要（）。

  A . 小区码道资源不足 B . 干扰或功率受限，软资源接纳失败 C . 传输资源申请或带宽接纳失败 D . UE只支持单载频，而主载频上已没有剩余的码道资源

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• What are the three elements of configuring congestion management？（）

  A . queue creation B . determining packet drop thresholds C . determining the random early detection method D . traffic classification E . queue scheduling F . FIFO configuratio

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• Which of the following contribute to congestion on an Ethernet network?（）

  A . Use of full duplex mode. B . Creation of new collision domain. C . Creation of new broadcast domain. D . Addition of hub to the network. E . Use of switches in the network. F . Amount of ARP or IPX SAP traffic.

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• Delay due to port congestion，pilots，tugs not available is a：（）

  A . Contingency； B . Emergency； C . A or B； D . not A nor B.

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• What are three problems with the tail drop mechanism of managing interface congestion？（）

  A . Queuing introduces equal delays for packets of the same flow， resulting in jitter. B . When congestion occurs， dropping affects most of the TCP sessions， which simultaneously back off and then restart again. C . All buffers can temporarily be seized by aggressive flows， and normal TCP flows experience buffer starvation. D . There is no differentiated drop mechanism. Higher priority traffic is dropped in the same way as best-effort traffic. E . In TCP starvation， traffic exceeds the queue limit because of the bursty nature of packet networks. A router cannot handle multiple concurrent TCP sessions. F . Global synchronization occurs because multiple TCP hosts reduce their transmission rates at random intervals in response to packet dropping

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• In which three network technologies is traffic shaping used to prevent and manage congestion？ （）

  A . Asynchronous Transfer Mode （ATM） B . data-link switching （DLSw） C . Route Processor Redundancy （RPR） D . Frame Relay （FR） E . Metro Ethernet F . Multiprotocol Label Switching （MPLS）

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• 进入拥塞避免时，拥塞窗口不再增加。

  A . 正确 B . 错误

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• You have an Ethernet network. Which of the conditions below can lead to increased congestion on your network?（）

  A . The use of Full-Duplex Mode. B . The Creation on New Collision Domains. C . The Creation on New Broadcast Domains. D . The Addition of Hubs to the Network. E . The use of switches in the Network. F . The Amount of ARP or IPX SAP Traffic.

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• 淤血(congestion)

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• In which three network technologies is traffic shaping used to prevent and manage congestion？（）

  A . Asynchronous Transfer Mode （ATM） B . data-link switching （DLSw） C . Route Processor Redundancy （RPR） D . Frame Relay （FR）  E . Metro Ethernet F . Multiprotocol Label Switching （MPLS）

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• Which one of the following actions would actually increase congestion on an Ethernet network?（）

  A . Increasing the number of collision domains. B . Micro-segmenting the network. C . Adding hubs for connectivity to the network. D . Putting additional switches in the network. E . Implementing VLANs in the network.

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• Cause值为“Congestion”的RRC Connection Reject发生在（）

  A . RRC CONNECTION REQ后 B . RL Setup Response已经完成后 C . UL Sync完成后 D . RRC Connetion Setup完成后

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• We didn’t catch the train on ______ of the traffic congestion.

  A、award B、apply C、appreciate D、anticipate

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• The word "congestion"(paragraph 5) might mean______.

  A．condition B．vehicle C．jam D．pedestrian

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• Urban congestion would greatly be relieved if the ________ charged on public transport Were more reasonable.

  A．prices B．tickets C．fees D．fares

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• （LTE)LTE小区发生网络拥塞后启动拥塞控制，拥塞控制应释放哪类业务／用户

  A.GBR B.Non-GBR C.信道质量差的用户 D.速率高的用户

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• We didn't catch the train on ______ of the traffic congestion.

  A．basis B．charge C．account D．behalf

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• Which of the following functions is designed to reduce congestion in cells？（)

  A．A.Handover B．B.Cell Load Sharing C．C.Frequency Hopping

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• （)等队列技术对拥塞的报文进行缓存和调度，实现拥塞管理与拥塞避免。

  A．WRED B．PQ C．CQ D．WFQ E．CBQ

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• TCH_CONGESTION是反映（)的性能统计项。

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