Networking 6.09

Front 1

Access point:

Back 1

provides wireless communication to devices on a wireless network

Front 2

Bridge

Back 2

device that is used to divide a network into segments passing information to one
workstation but not passing broadcast traffic

Front 3

Hub

Back 3

network device used to link several computers together repeating what comes in on one
port and copying it to all the other ports

Front 4

Internet appliance:

Back 4

hardware device used to allow someone to get on the Internet

Front 5

Network-attached storage:

Back 5

storage attached directly to a network for the purpose of backing
up data for clients, like a file server

Front 6

Router

Back 6

device that connects networks and makes decisions about the best path to send
packets down

Front 7

Switch

Back 7

layer 2 device similar to hub but filters packets based upon the MAC address

Front 8

Voice over IP:

Back 8

also known as Internet telephone; application that provides voice
communication over a network

Front 9

Ad hoc mode

Back 9

one method
used by a WAP. It is sometimes called peer-­‐to-­ peer mode with each wireless node in direct contact with every other node in a decentralized free-­‐for-­‐all. Two or more wireless nodes communicating in ad hoc mode form what is called an Independent Basic Service Set (IBSS.) Ad hoc mode networks are suited for small groups of computers that need to transfer files or share printers. Ad hoc mode networks are also good for temporary networks, such as study groups or business meetings.

Front 10

infrastructure mode.

Back 10

A second method used by a WAP is infrastructure mode. These wireless networks use one or more WAPs to connect the wireless network nodes to a wired network segment. A single WAP servicing a given area is called a Basic Service Set (BSS.) This service area can be extended by adding more WAPs. This is called an Extended BSS or EBSS. Wireless networks running in infrastructure mode require more planning and are more complicated to configure than ad hoc mode networks, but they also give the user finer control over how the network operates. Infrastructure mode is better suited to networks that need to share dedicated resources such as Internet connections and centralized databases.