8530546
Descrição
Mapa Mental por Matthew Stentiford, atualizado more than 1 year ago
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Criado por Matthew Stentiford
quase 8 anos atrás
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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
- Residential phone lines support dial up so
can be used if broadband is unavailble
- Disadvantages
- Slow download speeds
- Blocks phone line when on interent
- Near impossible to view videos
- Difficult to download multimedia
- Slow download speeds
- Links computer to telephone system using a Modem
- 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
- Fast download speeds
- Disadvantages
- Speeds vary according to local
usage + exchange distance
- Greater risk of hacking
- Speeds vary according to local
usage + exchange distance
- Fast internet connection
such as ADSL
- 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
- Constant high speed link
- Disadvantages
- Expensive cables
- Access depends on location
- Expensive cables
- Fibre optic cables provide homes with
broadband/television,telephone services
- 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
- No expensice cables
- Dsadvantages
- Relies on line of sight
- Interactive games may lag
because of signal delay
- Relies on line of sight
- No cables needed
- 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
- Wireless
- Disadvantages
- Distance from source is restricted
- Not all areas have coverage
- Distance from source is restricted
- Smartphones can access the internet
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