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【多选题】

In the communications industry, what are the features and benefits of using the layered OSI model?（）

A、It encourages industry standardization by defining what functions occur at each layer of the model.

B、It necessitates changes in functionality in one layer to other layers.

C、It enables equipment efficiency from different vendors to use the same electronic components.

D、It divides the network communication process into smaller and simpler components, thus aiding component development, design, and troubleshooting.

E、It supports the evolution of multiple competing standards, and thus enhances business equipment manufacturing opportunities.

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更多“In the communications industry, what are the features and benefits of using the layered OSI model?（）”相关的问题
第1题
[单选题] When can routine communications be resumed when radio silence has been imposed?（）

A、After determining that the frequency or channel appears to be no longer in use  B、After determining that geographic distance from the distress situation will prohibit any other signal from interfering with emergency communications  C、Routine communications can resume after the Rescue Coordination Center transmits a message on the frequency or channel being used for emergency communications stating that such traffic has concluded  D、If，in the Master's opinion，communications on that frequency will interfere with emergency communications  

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第2题
[] When can routine communications be resumed on a frequency or channel on which radio silence has been imposed? （）

A、A.After determining that the frequency or channel appears to be no longer in use  B、B.After determining that geographic distance from the distress situation will prohibit any other signal from interfering with emergency communications  C、C.After the Rescue Coordination Center transmits a message on the frequency or channel being used for emergency communications stating that such traffic has concluded  D、D.Routine communications can resume if，in the Master's opinion，communications on that frequency or channel will not interfere with emergency communications  

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第3题
[单选题] The first communication satellite was used for the purpose of（）.

A、taking the place of the radio system  B、introducing a new life-saving system  C、saving the vessels in distress  D、improving the communication on land  

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第4题
[] General radio communications in the global system are those between（）concerning the management and operation of the ships and may have impact on their safety.

A、A.SAR party and the ship in distress  B、B.SAR authorities and the ship in distress and survival craft  C、C.A ship station and any coast station  D、D.Ship stations and shore-based communication network  

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第5题
[多选题] Which three are characteristics of an IPV6 anycast address?（）

A、any-to-many communication model  B、delivery of packets to the group interface that is closest to the sending device  C、one-to-many communication model  D、the same address for multiple devices in the group  E、one-to-nearest communication model  F、a unique IPV6 address for each device in the group  

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第6题
[多选题] Which three are characteristics of an IPV6 anycast address?（）

A、any-to-many communication model  B、delivery of packets to the group interface that is closest to the sending device  C、one-to-many communication model  D、the same address for multiple devices in the group  E、one-to-nearest communication model  F、a unique IPV6 address for each device in the group  

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第7题
[多选题] Which three are characteristics of an IPV6 anycast address?（）

A、any-to-many communication model  B、delivery of packets to the group interface that is closest to the sending device  C、one-to-many communication model  D、the same address for multiple devices in the group  E、one-to-nearest communication model  F、a unique IPV6 address for each device in the group  

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第8题
[填空题] Utterance is based on （）;it is the realization of the abstract meaning of a sentence in a real situation of communication,or simply in a context.

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第9题
[单选题] You are creating a Windows Communication Foundation (WCF) service. The service endpoints change frequently. On the service, you add a new ServiceDiscoveryBehavior to the Behaviors collection of the ServiceHost Description property. You need to ensure that client applications can communicate with the service and discover changes to the service endpoints. What should you do?（）

A、Add a new ServiceDiscoveryBehavior to the Behaviors collection in the client application.  B、Add a new AnnouncementClient to the Behaviors collection in the client application.  C、Use the FindCriteria class and the UdpDiscoveryEndpoint class to set up the binding in the client application.  D、Use the DiscoveryProxy class and the EndpointDiscoveryMetadata class to set up the binding in the client application.  

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第10题
[] Which two statements are true about TCP communication?（）

A、A. The receiver acknowledges the final packet in each communications stream.  B、B. The receiver adds sequencing numbers to the packets received.  C、C. The sender adds sequencing numbers to the packets it sends.  D、D. The receiver acknowledges each packet it receives from the sending device.  

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