yes you can
Yes, you do not need to use a cable to connect your PS3 to the internet. You will, however, need a wireless router with an internet connection. Please note that using a wireless internet connection is usually slower that a wired one.
essentially using a 3g/4g cellular antenna connected to your device to receive an internet connection instead of using something more traditional like wireless or cable based internet.
The App store is an internet service. If the service has a lot of simultaneous traffic it will work slower. It doesn't necessarily have to do with your internet connection.
To connect your device to the internet using an Ethernet cable adapter for the wall, simply plug one end of the Ethernet cable into the adapter and the other end into your device's Ethernet port. This will establish a wired connection to the internet through the wall adapter.
no you need WiFi from DSL or cable or an ethernet connection
When you say "connect it to the wall jack", you have DSL connection or cable connection? Does cable connection allow the use use of a wireless router and card
Yes, the number of users on a single connection using the connection at any given time will affect the speed of the connection for each user. In the case of cable internet, heavy usage in a neighborhood can slow not only the individual user's internet, but also the internet of the neighborhood as a whole.
Cable, Wireless, T-1, T-3, OC3, and Satellite internet connections all require a cable router instead of using an ADSL modem router to access the internet.
You can't it must be an ethernet cable or a WiFi connection through your router or modem to your internet service
Informations from distans sensors (like Internet cameras) are sent to a server using different types of connections. It can be an Internet connection, a direct cable connection), a dial-up connection, a GSM/EDGE/UMTS mobile connection.
You do not need to switch to anything. You have to have internet connection (usually a modem), connect your wireless router to your modem (you need to know DNS servers of the internet provider) using the lan cable which usually comes with the router. And you are good to go.