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 router that performs Network Address Translation （NAT） is installed between your computer and the Internet. 
The router fails. You connect the computer directly to the Internet. 
You need to ensure that the computer is connected to the Internet in the most secure manner possible. 
What should you do？（）