Answers:
Typical wired and wireless technology:
Wired: Ethernet, telecommunications
Wirelesses: Wifi, Bluetooth,
Wifi:
WiFi is a universal wireless networking technology that utilizes radio frequencies to transfer data. WiFi allows high-speed Internet connections without the use of cables.
The term WiFi is a contraction of "wireless fidelity" and commonly used to refer to wireless networking technology. The WiFi Alliance claims rights in its uses as a certification mark for equipment certified to 802.11x standards.
WiFi is a freedom – freedom from wires. It allows you to connect to the Internet from just about anywhere — a coffee shop, a hotel room, or a conference room at work. What’s more – it is almost 10 times faster than a regular dial-up connection. WiFi networks operate in the unlicensed 2.4 radio bands, with an 11 Mbps (802.11b) or 54 Mbps (802.11a) data rate, respectively.
To access WiFi, you need WiFi enabled devices (laptops or PDAs). These devices can send and receive data wirelessly in any location equipped with WiFi access.
While Mercedes-Benz mbrace has always enabled drivers to access select functions remotely through a computer or compatible smartphone, mbrace2 includes all-new services designed to give you even more peace of mind. Track your vehicle’s use through features such as Driving Journal, Travel Zones and Valet Minder, or monitor its systems by running a Vehicle Health Check.

Beyond allowing you to perform a check of your vehicle’s main systems remotely, mbrace2 technology can automatically alert both you and your authorized Mercedes-Benz dealer to potential issues before they become full-fledged problems. In addition, it enables your vehicle to receive software updates wirelessly through the mbrace2 network.