3.  Hubs Hubs  Bridges Bridges  Switches Switches  On-Line On-Line  Off-line Off-line  Bibliography Bibliography

4.  A hub is a device used to connect multiple Ethernet devices and making them work as a single network.  It has a certain number of inputs and outputs which allows the connection. Back to contents

5.  A network bridge connects multiple networks.  This can be connecting different Local Area Networks for example. Back to contents

6.  A network switch is a networking device that connects network segments or network devices.  It is used for devices to communicate between each other successfully. Back to contents

7.  Online indicates a state of connectivity.  For example if you are ‘online’ in Face book, it means that you are currently connected to the server of Face book.  If you are online in a server, it means that you are connected to the server. Back to contents

8.  Offline indicates a state of non connectivity.  For example if you are ‘offline’ in Face book, it means that you are currently not connected to the server of Face book.  If you are offline in a server, it means that you are not connected to the server. Back to contents

9.  http://en.wikipedia.org/wiki/Network_switch http://en.wikipedia.org/wiki/Network_switch  http://searchsecurity.techtarget.com/definiti on/bridge http://searchsecurity.techtarget.com/definiti on/bridge  http://en.wikipedia.org/wiki/Ethernet_hub http://en.wikipedia.org/wiki/Ethernet_hub  http://www.cisco.com/cisco/web/solutions/s mall_business/resource_center/articles/conn ect_employees_and_offices/what_is_a_networ k_switch/index.html http://www.cisco.com/cisco/web/solutions/s mall_business/resource_center/articles/conn ect_employees_and_offices/what_is_a_networ k_switch/index.html  http://www.explainingcomputers.com/netwo rking.html http://www.explainingcomputers.com/netwo rking.html