Your computer is unable to access external names or IP addresses. You need to connect to external Internet resources.
What should you do first?（）

单项选择题You connect your computer to a wireless network. You discover that this new connection fails to show in the Connect to a network window. You need to view this connection in the Connect to a network window. What should you do?（）

A.A
B.B
C.C
D.D

单项选择题Your portable computer has a Virtual Private Network (VPN) connection configured. You need to connect to the VPN. What should you do?（）

A.A
B.B
C.C
D.D

单项选择题You have a computer that runs Windows Vista. You need to prevent an application from connecting to the Internet. What should you do?（）

A.A
B.B
C.C
D.D

单项选择题You have a computer that runs Windows Vista. You need to prevent all inbound traffic to your computer without being notified. What should you do?（）

A.A
B.B
C.C
D.D

单项选择题You install a new hardware router that provides wireless network connectivity between your computer and the Internet. You connect to the router by using a wireless network adapter. Your computer is able to access the Internet but is unable to discover other computers in the local wireless network. You need to configure the wireless connection to allow your computer to discover other computers. What should you do?（）

A.A
B.B
C.C
D.D