Wireless signal (radio) signals are used to send data through the airwaves between devices, instead of physical cable. Wireless technology is generally used for mobile IT equipment. It encompasses cellular telephones, personal digital assistants (PDA's) and wireless networking.
Cisco's Wireless Data Initiatives.
-Point-point / multipoint wireless
-Wireless LAN
-Wireless local loop
-Mobile Cellular voice / Data Communications
Uses of wireless technology :
1. Mobile users can use their cellular phone to access e-mail anywhere and anytime.
2. Travelers with portable computers can connect to the internet through base stations installed in airports, railway stations, and other public locations.
3. At home, users can connect devices on their desktop to synchronize data and transfer files.
Type of wireless technology :
1. Wireless wide area networks (WWANs)
2. Wireless metropolitan area networks (WMANs)
3. Wireless local area networks (WLANs)
4. Wireless personal area network (WPANs)
Wireless technology
1. Infra Red
2. Wireless local area networks (WLANs) , WiFi
3. Broadband wireless
4. Bluetooth
5. WiMAX - to extend the range of wireless network.
Internet Infrastructure.
What is Internet?
A global collection of network. Interconnected computers work by transmitting data through a special type of packet switching which is known as the IP ( internet protocol). When you connect to the internet, your computer becomes part of a network.
Internet VS World Wide Web
A Hierarchy of Networks
-from a single computer to LAN
-from LAN to ISP
-ISP to WWW
Internet Protocol
Every machine on the internet has a unique identifying number, called an IP address. The IP stands for internet protocol, which is the language that computers use to communicate over the internet. A protocol is the pre-defined way that someone who wants to use a service talks with that service. The "someone" could be a person, but more often it is a computer program like a web browser.
Type of internet connection and access
1. Dial connection
2. Cable
3. Satellite internet access
4. Fixed wireless
5. Broadband
6. Mobile wireless
Before the class dismiss, DR Dayana teach "how to change theme" at gmail.com. Also, how to change photo. Dr Dayana also told about important of nickname IP address. It is because to easy people find by search name and very important to interview especially a professional job. Dr Dayana also told to put a formal photo. By this class, I more understand about e-mail and important of IP address. THANK YOU :D
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