1.4 - Wireless Connectivity Methods Flashcards
(15 cards)
What are three benefits of wired connections compared to wireless ones?
They are often more stable and reliable
Much harder to intercept data on a physical cable
Superior range
What are two negatives of wired connections compared to wireless ones?
They offer less flexibility, harder to add new devices
Wires take up space and can easily create mess and a hazard
What are four wireless connectivity methods?
WiFi, Bluetooth, Satellite, and GSM
What do WiFi and Bluetooth both have in common?
They are both offer close range connection (as they both use radio waves)
What differs WiFi and Bluetooth?
WiFi requires a wireless router to be set up whereas Bluetooth is much more flexible and can be connected to as long as two devices are within range
What is one advantage and one disadvantage to microwave networks?
They have high bandwidth but can be heavily affected by the weather
What’s the main example of infrared light being used as a wireless connectivity method?
TV remotes
How is laser similar to fibre optic cables and how do they differ?
Laser networks and fibre optic cables both have high bandwidth and use light pulses but laser doesn’t require a cable
What is the disadvantage to laser networks?
They are affected by weather (often used in space because of this)
What do microwave, infrared, and laser networks have in common?
They all require line-of-sight communication
What does line-of-sight communication mean?
The transmitter and the receiver have to be in view to connect
Why don’t Bluetooth and WiFi have this issue?
The waves they use are of lower frequencies so they are capable to diffract move around barriers (to a certain extent)
How do satellite networks work around the issue of blockages of line-of-sight communication?
They act as a middle man to a transmitter and receiver that may not be able to communicate down on Earth due to a blockage
What are 3G, 4G, and 5G examples of?
A cellular network
What is the purpose of a cellular network?
To allow mobiles to connect to the internet without the need of WiFi
