[单选]

You are developing a Windows Communication Foundation (WCF) service to provide an in-memory cache for many Web applications.The service contract is defined as follows. (Line numbers are included for reference only.)
01 [ServiceContract]
02 public interface IDataCache
03 {
04 ...
05 }06
07
08 public class DataCache : IDataCache
09 {
10 ...
11 }
You need to ensure that all users share the cache.
Which code segment should you insert at line 07?（）

你创建一个DirectorySecurity对象为工作目录。你需要确定用户帐户和组具有读取和写入权限。你应该使用DirectorySecurity对象的哪种方法？（） the GetAuditRules method。 the GetAccessRules method。 the AccessRuleFactory method。 the AuditRuleFactory method。 Your network contains a server that runs Windows Server 2008 R2.You have a shared folder named Data that is located on the C drive. The permissions for the Data folder are configured as shown in the following table.Group name NTFS permission Share permission Group1 Read Read Group2 Modify Change Group3 Full control Read A user named User1 is a member of Group1 and Group3.User1 reports that she cannot upload files to the share.You need to ensure that User1 can upload files to C:\Data. The solution must minimize the number of permissions assigned to all users.What should you do？（） Add User1 to Group2.。 Remove User1 from Group1.。 Assign the Change share permission to Group1.。 Assign the Change share permission to Group3.。 CT 机属于（）设备。 什么是系统？系统的主要特征有哪些？ 柴油机冒白烟的原因（）。 机温过高。 机温过高。 燃油中有水。 供油量过大。

You are developing a Windows Communication Foundation (WCF) service to provide an in-memory cache for many Web applications.The service contract is defined as follows. (Line numbers are included for reference only.)
01 [ServiceContract]
02 public interface IDataCache
03 {
04 ...
05 }06
07
08 public class DataCache : IDataCache
09 {
10 ...
11 }
You need to ensure that all users share the cache.
Which code segment should you insert at line 07?（）