1.3.3 Networks Flashcards
define network
two or more computers connected that can transmit data
and share resources
what is the difference between physical topology and logical topology
Physical topology how the devices are actually set out
logical how the data is sent around
define protocol
A set of rules for communicating accross a network
Pros of a protocol
allows communication
ensures all devices follow the same rules
data is interpreted the same
what is HTTP
hyper text tranfer protocol
used for renderin web pages
what is FTP
file transfer protocol
used when sending files from one device to another
TCP/IP
transmission control Protocol / internet protocol
controls how data is sent around the internet
POP
Post office protocol
client recieves the email and it is then deleted from server
IMAP
internet messaging access protocol
client revicieves the email and doesnt delete it from server
SMTP
simple message transfer protocol
transfers messages from server to server
used to send emails
what are the two types of standard
de jure
de facto
what is the difference between de jure and de facto
de facto is a standard agrreed upon but never officially approved
De jure
has been officially approved
examples of both standards
de jure
ASCII
De facto
QWERTY
define layer
division of network functionality
state one difference between packet switches circuit switching [2]
Circuit switching requires dedicated hardware used for each connection
packet switching hardware is used for multiple connections
circuit switching data is sent along one route
Packet Switches packets may be sent accross multiple routes
circuit switching less secure
packets not all packets wil be intercepted
