| Hardware component that enables a computer to send (transmit) and receive data, instructions , and information to and from one or more computers . |
| COMUUNICATIONS
DEVICE TERMS |
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| TERMS |
DEFINITION |
|
MODEM
 |
A device that enables a computer to communicate
over analog
networking media such as connecting the Internet via telephone lines Wireless Modem : modem that connects to the serial port but does not connect to telephone lines. It receives through the air |
|
ROUTER
 |
A device that connects multiple networks together ; routes packets to their next location in order to efficiently reach their destination. |
SWITCH |
A device used to connect multiple devices on a single (typically wired) network ; forward packets to only the intended recipient. |
WIRELESS
ACCESS POINT |
A device on a network that connects wireless devices to that network . |
HUB |
The device that provides a common central connection point for nodes on network. |
Network
Interface Cards (NIC) / Network Card |
An expansion cards through which a computer can connect to a network. Wireless network Interface Card : An expansion cards through which a computer can connect to a network that provides wireless data transmission . |
REPEATER |
A device tha t takes a weaken signal and repeat it at its original strength (to enhance the signal) |
HUB VS SWITCH.
| HUB |
SWITCH |
| Transmits signal to all other ports a computer is connected to but only the intended recipients will accept the rest will ignore. | Transmit signal to only the intended recipients |