Networks - layers/protocols Flashcards
HTTP
-hypertext transfer protocol
-access/receiving web pages vie internet
-written in html
how does http work
-protocol requests a webpage from web server
-server sends response with webpage
HTTPS
-HTTP but a secure version
Ethernet
-A suite of protocols used with wired
networks.
WiFi
A suite of protocols used with wireless
networks. It enables the transmission of
data through radio signals.
HTTP meaning
A protocol that is used to identify, request,
and transfer web pages across the
internet.
FTP
-file transfer protocol
-protocol that deals with uploading +
downloading files from a server. Users can choose what to download and where to upload.
POP
-Used with email.
-retrieves email from the email server,
-delivers it to
your computer + then deletes
it from the email server.
IMAP
Used with email.
-retrieves the
email from the email server but also leaves
a copy of it on the remote server.
SMTP
-Used with email.
- deals with
sending an email to an email server.
How email works
-email is sent from device to mail server via SMTP
-forwarded on by other SMTP servers
-reaches destination mail server + stored
-recipient uses POP/IMAP to access email
Transmission control protocol
-TCP
-breaks up msg sent over internet into data packets
-reassembles packets
-deletes errors
-resends lost msg
IP
-routes data packets from one IP address to another
sending data
-application chooses best protocol to use
Order of sending data (layers)
-application
-transport
-internet
-link