Types Of Internet Flashcards
Dial up
- When you dial into the internet using a modem or telephone
* data is sent through a wire when you call.
Characteristics of dial up
Maximum transfer speed of about 56 kbits/s
The range is however far from the person calling to the internet provider
Very secure locally
Copper cable
- Uses electrical signals to pass data between networks
* Three types of copper cable(coaxial, unshielded and shielded twisted pair
Characteristics of copper cable
•Not a very high transmission rate
-lower than fibre optics
- Range of transmission- 300ft
- Not as secure as fibre optics
Optical fibre
Light travels down a fibre-optic cable by bouncing off the walls
The light reflects back if it hits the walls at less than 42 degrees
Characteristics of optical fibre
- Faster than average broadband speeds=1GB per second
- More reliable
Range of transmission - 100mbit/s up to 2KM
•Provides extremely secure transmission
-no way to detect data being transmitted
Satellite
Uses geostationary satellites, rather than telephone lines or cable systems.
Characteristics of satellite
Can offer relatively high data speeds- up to 50 MPS
Range of transmission - no more than 150 feet
Is a secure method of internet- used by both businesses and the government
Microwave
Uses a beam of radio waves to transmit information between two fixed locations on earth
Characteristics of Microwaves
Microwave link speed is 357 Million MPH
Range of transmission- Wavelengths range from one meter to one millimetre
Very poor with security and has has higher risks to the data
Mobile data networks
Helps provide data in order to access apps such as social media and games if WI-FI is not available
Characteristics of mobile data networks
Speed of transmission: 100 megabits per second
Range of transmission: in cities= 1/2 mile
In rural areas= 5 miles
Security of transmission: 3G and 4G have much greater security compared to the previous generation of 2G
