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Home and personal communication
Descripción
KS4 ICT Mapa Mental sobre Home and personal communication, creado por Matthew Stentiford el 13/04/2017.
Sin etiquetas
ict
ks4
Mapa Mental por
Matthew Stentiford
, actualizado hace más de 1 año
Más
Menos
Creado por
Matthew Stentiford
hace más de 7 años
12
1
0
Resumen del Recurso
Home and personal communication
Dial up
Links computer to telephone system using a Modem
modem connects to telephone socket
Modem can be external or internal to the computer
Advanatges
Residential phone lines support dial up so can be used if broadband is unavailble
Can use in different locations
Disadvantages
Slow download speeds
Blocks phone line when on interent
Near impossible to view videos
Difficult to download multimedia
Broadband
Fast internet connection such as ADSL
Asymmetric Digital Subscriber Line
ADSL uses existing telephone lines allowing high speed connection
Permanently connected to the internet
Faster updates, email delivering, better than dial up
Advantages
Fast download speeds
No blockage
Internet always on
Several devices can run at the same time
Disadvantages
Speeds vary according to local usage + exchange distance
Greater risk of hacking
Cable
Fibre optic cables provide homes with broadband/television,telephone services
Signals DO NOT get weaker if you move further away from the origin
upload/download speeds faster than ADSL
Advantages
Constant high speed link
Can be used for TV
Very reliable
Disadvantages
Expensive cables
Access depends on location
Satellite
No cables needed
sends/receives signals from earth base
Useful in rural areas with no cables
Advantages
No expensice cables
Ideal for remote places
Dsadvantages
Relies on line of sight
Interactive games may lag because of signal delay
Mobile communictions
Smartphones can access the internet
Wireless laptops connect to hotspots (wireless)
Dongle = USB that allows computers to access the internet wirelessly. can be pay as you go or connected to your contract bill
Bluetooth connects to PDAs wirelessly and use ISP to connect to the internet. Can share voice, music videos and pictures
Advanatges
Wireless
Mobile
Disadvantages
Distance from source is restricted
Not all areas have coverage
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