Section 4

What  is a router: router goes to isp first.
dividing two bits of information up and passes information thats goin around one network to another keeping traffic separate.
doesnt have to go on internet
every router gets number
if sending something to something to some in own house doesnt need the internet
router control traffic
two setting internal eg inhouse, external if message is not for that person in that house.
tr ansfering thhings between your house withut using internet.


WIFI:
Tramsferring data between devices without the need for physical connection or wiring


 Bluetooth: 
is used by mobile devices for transferring smaller files
it is slower than wifi
bluetooth creates its own network and is an agreement between two devices wear is wifi is with multilple devices


How to set up a network:
to set a network with the internet you need a isp they will provide you with a router browser
IRB


ISP: Internet Service Provider eg: telecom, orcon
                                                                                                                                                                     


 advantages-communication, transfer of files, resources, share storage, common (all similar)
    disadvantages-virus', malware, hackers, loss of resource, loss of connection

 id's and passwords are used to divide personal files by accounts, authorize different access
    home directory=personal area of network


                                                                                                                                                                   


Faxes: hard copy to hard copy and legal.
Not secure as it could be unknown who picks up the fax
is also a delay- unknown that it could be there and could sit there for days


Email: Blind copy, 


-CC not for you but could be of intrest


Tele/video calling- Multiple people so that you can confrence and discuss something meaning you don't have to get on a plane just for a meeting.
tele - phone
video-video


local area network (LAN) - a network on one site 
(WAN) - two sites are permately linked


Differnce = one vs two sites
also to create a lan you need switches, hubs, bridges
to create a wireless lan need an access point thats linked on to the lan.
to create a WAN you a need a rotuer on eitehr end you also need an external internet line.


Intranet- web technoolgy being used inside your business, being more secure and people are more familar interface


Internet-providing services sharing information and advertising


HUB- is a confused nox , 
bridge - is a link between two parts of a LAN
, used to orginize the LAN to maximise the sending signal
Switches- Manages the traffic going from a specific port to another