2.0 Laptop and Portable Devices
2.1 Identify the fundamental principles of using laptops and
Bluetooth is an
alternative wireless network technology that followed a different
development path than the 802.11 family of standards. Its bandwidth is
up to 2.1Mbps for version 2.0, and its range is only 10 meters (30 feet).
Devices with a Bluetooth radio and an antenna can speak to each other with
little or no preparation. For example, conference attendees can readily
transfer files across a table using their Bluetooth-enabled notebooks. You
can also send a file to a Bluetooth-enabled printer without downloading
drivers. Bluetooth may soon be a standard interface on many cell phones,
handheld computers, and even home appliances. However, it is going to take
sometime before the hardware and software issues are resolved completely.
Bluetooth operates at 2.4GHz.
(IR) radiation is
electromagnetic radiation of a wavelength longer than that of visible light, but
shorter than that of microwave radiation. It is a line of sight communication,
and any obstruction to line of sight is going to disrupt communication.
A Cellular WAN provides wireless
connectivity over long distances using cellular towers. Cellular WAN provides
communication for distances as long as 10 KM.
Ethernet is a consist of diverse family of computer networking technologies
that operates over local area networks (LANs). It defines a number of wiring and
signaling standards for the physical layer, and network access at the Media
Access Control (MAC)/Data Link Layer, and a common addressing format. Ethernet
has been standardized as IEEE 802.3.