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Gateway
A gateway connects two different types of network.
Router
A router stores the addresses of all devices that are connected to it so that it can forward network traffic to its destination using the quickest route
Switch
A switch connects devices on a network using cabling and ports.
Booster
A booster is used to amplify the signal in a network so that its range can be extended.
WAP
A wireless access point allows devices with Wi-Fi connectivity to connect to a wired network
Modem
a device that lets computers or other devices connect to the internet through a telephone or cable line.
Domain
name used to identify a web server or web address
What are protocols used for security
HTTPS, SSL AND TSL
Who are plotters used by
architects, engineers and cartographers
How does an inkjet printer work
Inkjet printers use cartridges containing different colours of ink. Tiny dots of these inks are sprayed by nozzles onto the paper to form images or text.
Where are inkjet printers primarily used
Home printing
How do laser printers work?
Laser printers contain a drum that holds electrical charge. A laser is used to discharge certain points on the drum and draw an image. Electrically charged toner is attracted to the discharged points of the drum and is heated onto the paper that passes over the drum.
What are laser printers primarily used for
High volume printing in offices
How do dot matrix printers work
The print is made by impacting the paper through a ribbon of ink.
How do dot matrix printers make a lot of copies at the same time
The paper often has a number of carbon copy layers, so it can make several copies at the same time.
Advantages of an Inkjet printer
The ink cartridges are cheap to buy
disadvantages of an Inkjet printer
The ink is not waterproof and the printing speeds are slower than a laser printer.
Advantages of Laser printer
Its cheaper for high volume printing and produces high quality printouts. It is also quiet and the toner is waterproof.
Disadvantages of using a laser printer
The setup and refill costs are high and expensive.
Advantages of Dot matrix printer
It can work in dirty environments and can create carbon copies.
Disadvantages of Dot matrix printer
It is very noisy and creates low quality print outs
Advantage of a plotter
It creates very high quality printouts
Disadvantage of a plotter
Extremely expensive
Advantages of 3d printer
can be used to create prototypes
Disadvantage of 3d printers
Users can print inappropriate items like guns, and printouts are often innaccurate.
Advantages of optical storage
Reliable and good portability
Advantages of Magnetic storage
High capacity and cheap
Advantages of Solid state storage
reliable durable and portable
Disadvantages of optical media
Small capacity and needs a disc drive
Disadvantages of magnetic
Not durable and has a slower read/write compared to SSDs
Disadvantages of SSDs
limited writes and expensive
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