[单项选择]Radiotelephony communication or radio telex communication or both will be carried out by terrestrial or satellite means,（）the equipment fitted on ship and the area in which the incident occurs.
A. depend on
B. depending on
C. dependent on
D. depended on

[单项选择]To establish a communication channel for the telex service in the INMARSAT-A terminal, you should first（）.
A. establish a communication channel from the CES, via the International Telex network to the final destination
B. set up a communication channel from your SES, via a satellite, to a CES within your ocean region
C. set up a channel directly to the addressee at the destination
D. establish a channel from your terminal, via the International telex network to a CES within your ocean region

[单项选择]（）communication are intership VHF radio telephone communication.
A. ship-to-shore
B. shore-to –ship
C. bridge-to-bridge

[单项选择]Radio communication（）for many years and helps to save tens of thousands of lives.
A. has been used
B. have been used
C. has used
D. have used

[单项选择]In telex abbreviations，CFM and INFM refer to（）and（）respectively.
A. confirm，inform
B. confide，inflow
C. conform，infuse
D. confessed，inflame

[单项选择]The dolphin may be（）but it seems to want to communicate.
A. comb
B. dumb
C. numerous
D. overcome

[多项选择]OTN网络中，设备单板出现COMMUN_FAIL告警，可能原因有？
A. 该单板处于硬件或软件复位态
B. 子架间级联网线不符合要求
C. AUX板故障
D. 主控单板或交叉单板故障

[单项选择] A client application calls a Windows Communication Foundation (WCF) service with a proxy class that was generated by Visual Studio.The service binding was changed from wsHttpBinding to basicHttpBinding. The method signatures in the service contract are changed.After these changes, the client application receives errors when calling methods on the service.You need to ensure that the client can invoke methods on the service successfully. What should you do?（）
A. Update the configuration file to use basicHttpBinding.
B. Enable anonymous authentication for the service.
C. Copy the configuration file elements under the element from the service back to the client.
D. Update the service reference.

[单项选择]You are moving a Windows Communication Foundation (WCF) service into production. You need to be able to monitor the health of the service. You only want to enable all performance counter instances exposed by the ServiceModelService counter group. Which element should you add to the system.serviceModel section in the application configuration file?（）
A.
B.
C.
D.

[多项选择] You are developing a Windows Communication Foundation (WCF) service that returns location information for authorized law enforcement agencies. The service contract is as follows: [ServiceContract] public interface IMappingService { [OperationContract] long[] GetLocationCoordinates(String cityName); [OperationContract] long[] GetLocationOfCitizen(String ssn); } Users are authenticated and impersonated. The system uses ASP.NET roles. The members of law enforcement are members of the LawEnforcement role. You need to ensure that only members of the LawEnforcement role can call these methods. What are two possible ways to achieve this goal?（） (Each correct answer presents a complete solution. Choose two.)
A. Add a PrincipalPermissionAttribute to each method that should be available only to members of law enforcement. Set its SecurityAction to Demand and set the role equal to LawEnforcement.
B. Use the CurrentPrincipal property of the thread. Call the IsInRole method specifying LawEnforcement as a parameter.
C. Create a GenericPrincipal specifying Thread.CurrentPrincipal.Identity as the IIdentityParameter and LawEnforcement as the only value for the Roles parameter.
D. At the beginning of each method, enumerate each ClaimSet in a new WindowsClaimSet. Use the FindClaims method to locate a claim type named Role with a right named LawEnforcement.

[单项选择]You are creating a Windows Communication Foundation (WCF) service that responds using plain-old XML (POX).You have the following requirements: You must enable the /catalog.svc IItems operation to respond using the POX, JSON, or ATOM formats. You also must ensure that the same URL is used regardless of the result type. You must determine the response format by using the Accepts HTTP header.What should you do?（）
A. Implement the IChannelInitializer interface in the service class.
B. Implement the System.Runtime.Serialization.IFormatterConverter interface in the service class.
C. Set the BodyStyle parameter of the WebGet attribute on the operation to WebMessageBodyStyle.WrappedResponse.
D. Set the retum type of the operation to System.ServiceModel.Channels.Message. Use the current WebOperationContext methods to return the data in the required format.