2.7 Protocols Flashcards
TCP
transmission control protocol
UDP
user datagram protocol
IP
internet protocol
HTTPS
hyper text transfer protocol secure
FTP
file transfer protocol
SNMP
simple network management protocol
POP
post office protocol
SMTP
simple mail transfer protocol
ICMP
internet control message protocol
what does TCP do
receives data and splits it into packets
receives packets and reassembles them
- retransmits if not received
- error checking and correction
what does UDP do
alternative to TCP but does not check if packets have arrived and will not retransmit
-faster but less reliable
what does IP do
addresses packets with source and destination IP address and removes them when they are no longer needed
- responsible for forwarding packets
what does HTTP do
how you access a webpage from a server
client -> request/response -> web servers
what does FTP do
handles file uploads and downloads. transfers data, programs and non viewable content.
what does SNMP do
collects information from devices connected to a network
- often managed from devices like routers
- stats collected include traffic and errors
what does POP do
used to download emails from email servers
what does SMTP do
used to send emails to email servers and transfer emails between servers
what does ICMP do
troubleshoot issues on the network, sends messages where there are issues with IP e.g. ping test
what protocols are in the network layer
ICMP
what protocols are in the internet layer
IP
what protocols are in the transport layer
TCP and UDP
what protocols are in the application layer
SMTP
FTP
HTTP
SNMP
POP
order of the protocol stack
application layer
transport layer
internet layer
network layer
