wan is a bigger area of network that
is conected to the internet that we all
conncet to.
wan [wide area network.]
lan is a local area of network like
a school for the computers and
the students .
lan [local area network.
passwords you need them for all differant
sorts of things like laptop bank and school
you need them so people can't get into you
accounts .
passwords
firewall.
to stop unwanted dater
to acsess your
computerunless you
want it to be reaseaved
.
you need to key to
decryped the cipter if you
want to see the message
key
is when you send a message to someone or a file
and it jumbels them up while they are being sent to someone
and they need the key to be able to open and access the
message and see what it is.
Encryption
The enigma code
it was a secret code that
people would send to each
other if they were trying to
breach a place.