MOD 1 - Networking Basics Flashcards

1
Q

Name all layers

A

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

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2
Q

in packet switched networks, how do you calculate transmission time? (time for a packet to travel from src to switch to dest)

A

R = link capacity
L = packet/message size

time source to switch = dtrans = L/R

tot time source to dest = dtrans x # hops

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3
Q

What is a packet switching and circuit switching?

A

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

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