comp sci

tcp/ip

transmission control protocol - breaks data into packets and reassembles them, controls device connection to networks

internet protocol - controls packet switching

pop

imap

smtp

ftp

post offic protocol, deletes when downloaded

internet msg access, deletes when u delete

simple mail transfer protocol

file transfer protocol

copyright design patents act

computer misuse act

data protection act

1988

1990

1998

stake holders

anyone affected by an incident/company

bandwith

amount of data able to transferred at a time, shared amongst users on network

ipv4

ipv6

4.3 bil options, 4 sets of 3 digits

340 tril tril tril options, 8 sets of 4 hex digits

switches

connect devices on a network

routers

connect networks

2.4 ghz

5ghz

better over long distance, greater range, penetrates walls

faster short distance, less overlapping channels- less interference

star topology

switch in centre, nodes all connected to it

bus topology

lots of data collisions - slow, all nodes connected to one backbone, terminators either end

ring topology

no collisions but only one can transmit at once, dependent on the ring, data passses many nodes before destination