1.4 internet connections Flashcards
copper cables
cheaper type of wired connections,
poorly insulated, therefore susceptible to magnetic interference
more likely to suffer from attenuation
malleable , less likely to break
lower bandwidth , cant transmit as much data s once then fibre optic cables
fibre optic cables
very fast but expensive
signals transmitted through waves of light through a glass tube , therefore not affected by electromagnetic attenuation and suffer less from attenuation
higher bandwidth
fragile
bluettooth
short range 10m
close proximity, no other hardware is required
microwave
large area via microwave towers
must be in line of sight with each other with no obstructions
are affected by bad weather leading to higher chances of attenuation
satellite
use point to point communication by using satellites above the earths atmosphere
long distances causes a delay between transmission
gsm/ 5g
global system for mobile communications, allowing mobiles phones to connect to a network for calls and text messages
connection characteristics
strength / range / latency / bandwidth / storage capacity / contention
latency is the delay when sending data
bandwidth is the maximum amount of data that can be sent across a network at once
contention refers to whether a network is dedicated (uncontended ) or shared between users (contented)