communication hardware :face_with_cowboy_hat: - Coggle Diagram
communication hardware :face_with_cowboy_hat:
a hub is a cheap, small scale device which is used to allow a group of nearby computers to connect to eachother
Hubs are usually slower than other communication options such as switches.
They traditionally allow data to transmit at either 10 Mbps or 100 Mbps.
hubs are simple devices which simply broadcast any packets of data they receive to all other connected devices
they do not route intelligently
modem stands for
This device converts signals it receives from digital to analogue and back again
Data is stored as 1's and 0's. When transmitting data over phone systems though, it has to be converted to work on those kinds of cables.
A switch can connect a huge amount more devices than a hub (32 - 128 devices).
It is generally at the centre point of a network or network segment. Switches perform "packet switching" so that instead of broadcasting data to every connected device, data is channeled only to the desired recipient.
Data can flow through a switch at up to 10Gbps!
These items are essential when managing larger quantities of connected devices and maintaining performance
wireless access points
a device that can connect two networks together
the most common example of this is a broadband device which allows us to connect to Internet from our homes, on different devices
IP stands for Internet Protocol
routers usually provide IP addresses
IP ensures that each data packet is given a destination address and a sender address
Transmission Control Protocol
TCP cuts messages into packets of data so it can be sent across the Internet
It also reassembles the message at the destination
each packet is given a number so it can be in the correct order on delivery
can identify errors and missing packets and requests redelivery of individual element
TCP and IP must be used together
they rely on each other for different functions
only when combined can data be transmitted across a network or the Internet
IP only reads data packets if it is the intended destination for that packet
Packets that are not addressed for that computer are ignored by IP