单项选择题 Your computer runs Microsoft Windows XP Professional. The computer also runs 20 third- party applications. You plan to upgrade your computer to Microsoft Windows Vista. The functionality of the existing applications must be maintained even after you upgrade your computer. You need to ascertain whether the hardware and software on the Windows XP Professional computer will support the upgrade. What should you do?（）

单项选择题 You receive a remote assistance request. It expires before you are able to accept it. You need to increase the amount of time you have to accept remote assistance requests. What should you do?（）

单项选择题 Your computer uses both wired and wireless network connections. The networks are not connected to each other.You disallow incoming connections in Microsoft Windows Firewall. You create a shared folder. Users on the wireless network cannot access the shared folder. You need to allow access to the shared folder from the wireless network. You also need to maintain the security of the wired network. What should you do?（）