LAN-welcometoethernet

Question 1

datalink layer sublayers

Answer 1

LLC - logical link control
MAC - media access control

function to pick how will enter network layer

Question 2

network layer protocols

Answer 2

mostly IP, other though like appletalk

Question 3

CSMA/CD meanings

Answer 3

set of rules governing how you talk over ethernet

carrier - network signal
sense - ability to detect
multiple access - all devices equal
collison - what happens when 2 devices send at once
detection - what to do when collison happens

Question 4

token ring

Answer 4

whoever has token has ability to send at one time. collision avoidance

Question 5

unicast message

Answer 5

one to one connection

Question 6

broadcast message

Answer 6

one message to all. switches send these to all ports

Question 7

multicast message

Answer 7

one message to a GROUP. cut down on the unique streams.

Question 8

MAC address

Answer 8

contain 12 characters in hexadecimal. divided in half.

first 24 bits - organizational id
last 24 bits - vendor unique id