null modem
Dedicated
An isochronous connection is a path between two devices over a predetermined list of wireless channels. Bluetooth uses this type of connection to deter the amount of interference received as well as created. The basic idea of this connection type is that two devices will cycle between channels a-f, and repeat.
Devices by type, devices by connection, resources by type, and resources by connection.
A Bluetooth connection with a range of approximately 30 ft.
mobile wimax
A network interface card (NIC) typically has a physical connection to a network, such as Ethernet or wireless. This connection allows the NIC to communicate with other devices on the network.
It's Performance Management
"RJ-45 Cross cable" is required for a direct ethernet connetion between two pcsbetween the same type of network devices (PC-to-PC, switch-to-switch, router-to-PC (Note: router and PC are LIKE devices, because both are DTE)) you use Crossover cable.to connect different type of devices (PC-to-switch, PC-to-router ..) you use Straight Through cable.
A piconet is the type of connection that is formed between two or more Bluetooth-enabled devices, one device takes the role of 'master', and all other devices assume a 'slave' role for synchronization reasons. Where as a scatternet is a number of interconnected piconets that supports communication between more than 8 devices. Scatternets can be formed when a member of one piconet (either the master or one of the slaves) elects to participate as a slave in a second, separate piconet.
Connection Oriented
A piconet is the type of connection that is formed between two or more Bluetooth-enabled devices, one device takes the role of 'master', and all other devices assume a 'slave' role for synchronization reasons. Where as a scatternet is a number of interconnected piconets that supports communication between more than 8 devices. Scatternets can be formed when a member of one piconet (either the master or one of the slaves) elects to participate as a slave in a second, separate piconet.
An ad-hoc network is a wireless network in which all connections are wireless. The only devices required are wireless network interface cards in all of the devices that want to participate in the network.