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.) 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.。 Use the CurrentPrincipal property of the thread. Call the IsInRole method specifying LawEnforcement as a parameter.。 Create a GenericPrincipal specifying Thread.CurrentPrincipal.Identity as the IIdentityParameter and LawEnforcement as the only value for the Roles parameter.。 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.。
简述霍桑实验的步骤。
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《国家中长期科学和技术发展规划纲要》明确了未来中国科技发展的指导方针和总体目标，提出到（）年要进入创新型国家行列。 2025年。 2020年。 2015年。 2030年。
You work in a company which is named Wiikigo Corp. The company uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. There is a database named DB1 in the instance. DB1 has a table which is named Table01 and a stored procedure named Procedure01. Procedure01 choose data from Table01 by using a sp_executesql Transact-SQL statement. You company security rules forbid users to access tables directly in any database. Look at the exception below: "Msg 229, Level 14, State 5, Line 1 The SELECT permission was denied on the object 'Table01', database 'DB1', schema 'dbo'." The exception is raised when Procedure01 is executed by users. You must make sure that e user can successfully execute Procedure1 complying with the company rules. So what action should you perform to achieve this goal?（） You should execute the GRANT SELECT ON dbo.Table01 TO User1 Transact-SQL statement. 。 You should execute the GRANT EXECUTE ON dbo.Procedure1 TO User1 Transact-SQL statement. 。 You should alter Procedure01 and add the WITH EXECUTE AS OWNER option to its header 。 You should alter Procedure01 and add the EXECUTE AS USER = 'dbo' option immediately before the call to the sp_executesql stored procedure.。
抗日战争时期，毛泽东提出的统一战线的根本策略原则是（）。
