Wired versus wireless (Edexcel GCSE Computer Science): Flashcards
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Definition of transmission media
Definition of transmission media
Communication channels that carry data between network devices
Two main types of transmission media
Two main types of transmission media
Wired and wireless
How copper wire cables transmit data
How copper wire cables transmit data
As electrical pulses
How fibre-optic cables transmit data
How fibre-optic cables transmit data
As pulses of light
Definition of bandwidth
Definition of bandwidth
Volume of data transferred, measured in bps
Definition of latency
Definition of latency
Time lag between data leaving source & arriving at destination
Range of copper wire cables
Range of copper wire cables
100m
Range of fibre-optic cables
Range of fibre-optic cables
80km
Primary use of Wi-Fi
Primary use of Wi-Fi
Home and office networks
Range of Bluetooth
Range of Bluetooth
10 metres
Primary use of Bluetooth
Primary use of Bluetooth
Connecting devices over short distances
Primary use of Zigbee
Primary use of Zigbee
Smart home devices and Internet of Things applications
Range of RFID
Range of RFID
Up to 1m
Range of NFC
Range of NFC
Around 10cm
How wireless transmission sends data
How wireless transmission sends data
Using radio waves through the air