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Topic 1.3 networking and topologies - Coggle Diagram
Topic 1.3 networking and topologies
Networking hardware
ethernet cables
This is a cable that connects devices directly to each other,
its wireless counterpart WI-FI is much slower and can be blocked easier
Hub/switch
its how different computers are able to connect to eachother.
Switches are bigger and faster but more expensive.
Router
A router is the connection between a local area network and a wide area network. its how your home network is able to access the wide area network of the internet.
Network Interface Card (NIC)
Network interface cards store the data that identify an individual on a network. It has its own unique MAC address. it can be wired or wireless.
protocols
email protocols
STMP
this protocol manages the sending of emails
POP
It transfers emails from server to client, only deleting it from the server if the client wants it to
IMAP
Retrieves emails from a mail server. Emails are downloaded by the client but are NOT deleted from the server unless the user does so.
Other protocols.
TCP
TCP is responsible for breaking down messages into packets and reassembling them at the destination. It checks for errors in packets and resends lost packets.
IP
It allows a device to be identified for efficient packet routing.
Web protocols
HTTPS
Hypertext transfer protocol secure
It works exactly the same as HTTP but encrypts the data being transferred.
HTTP
hypertext transfer protocol
Requests that the web server transmits the requested web page to the viewer's web browser.
Topologies.
Star topology
Benefits - its incredibly cheap and easy to recognise where there is a problem.
Disadvantages - its easy to break and NEEDS replacing of wires to repair it. if the hub/switch breaks the whole system breaks
Full mesh topology
Benefits - Its self healing meaning it will still function if a wire is broken, its very cost effective with transfer
Disadvantages - Its very expensive to make. its very hard to identify if a cord is broken or not
Transmission media