Which of the following is a preferable method to secure wireless access in a soho?

The SOHO wireless network is being used by many people every day. It is common to see the being used every day at some offices. So it is important that they are made secured as well. The reason is, that a network which is opened, invites the troubles to the computer itself. So making the network secured should be the first priority of everyone. If someone wants to have some strong network then he should be doing something to secure the basic infrastructure that is the foundation of this network. There is some easy way for that and it is that the network should be closed in some closet. That closet should be locked. Also, if someone makes some restriction that they others cannot gain any access to the network, then it would become so easy for someone. There can be the door with some lock or can be something digital, they all are used for the protection of the network. Sometimes, one can even use the bio metrics. Hence there would be some finger print reader which would be found at the door so that only those who have that print would get access to the network. Also, one can limit the people who can get the access to one's network.

Why im i -98 points? ! this app is rigged