MOD 1 - Networking Basics Flashcards
Name all layers
ATNDP, Application, Transport, Network, Data Link, Physical
A = Supporting network apps
T = process to process data transfer
N = routing datagrams from src to dest
L = data transfer between neighboring network elements
P = bits on the wire
in packet switched networks, how do you calculate transmission time? (time for a packet to travel from src to switch to dest)
R = link capacity
L = packet/message size
time source to switch = dtrans = L/R
tot time source to dest = dtrans x # hops
What is a packet switching and circuit switching?
packet switching = sender breaks message into smaller packets and sends them into the network. The receiver then reassembles the packet back into the
original message.
circuit-switching = pre-established reserved route for your data packets to follow from the sender to the receiver