1.3 networks Flashcards
LAN
network for computers on the same site owned by the organisation using it
WAN
connecting computers far away, using shared transmission media
network
system connecting two or more computers to share data in digital form through digital connections
network topologies
star - easy and cheap, joined to a central switch
mesh - more stable, no central connection
wired connections
signals travel through metal wires or fibre optic cables, more privacy
wireless connections
travel through the air through radio waves, needed if your device is mobile
peer to peer
all computers are equal and can send signals to each other
client server
server holds all the files and send them to the other computers
server examples
email server, file server, printer server, web server
wireless access point
sends out waves to make connections
switch
connects several computers, like star network
router
connects several networks
network interface controller
allows the computer to send and recieve network signals.
standards
rules for how a computer works to help computers communicate
wifi
standard for sending and recieving wireless signals
ethernet
connecting computers to a network with cables
bluetooth
standard for communicating with nearby devices
protocol
standard for communication
internet protocols
http/https - send web pages through internet
ftp - send files to computer from a server
tcp/ip - controls journey of messages through internet
email protocols
pop - sends emails from email server to your computer
imap - lets us look at emails on internet page
smtp - sends messages to computer
Mac adress
media access control address - adress given to every computer at factory
ip adress
internet protocol - sends signals in the right direction
ipv4 vs ipv6 bits
32bits vs 128 bits
why is ipv6 needed
because we ran out of ipv4 addresses
