单项选择题 You send a remote assistance invitation for help. You need to open a personal document without allowing the help desk to view the document. You also need to ensure that the remote assistance session remains connected. What should you do?（）

单项选择题 You have two computers named Computer1 and Computer2 that run Windows Vista. Both computers are located in the same subnet. You access shared resources on Computer2 from Computer1. You change the IP address on Computer2 and immediately notice that you can no longer access the shared resources from Computer1. You confirm that you can still access Internet resources from both computers. You need to access the shared resources on Computer2 from Computer1. What should you do?（）

单项选择题 You have a computer that runs Windows Vista. You run ipconfig /release from the command prompt and receive the following error message: “The requested operation requires elevation.” You need to release the IP address for the computer. What should you do?（）