1. Performance of non-persistent CSMA
0.81
0.51
0.14 S G
0.01
0.1 1

2. Performance of 1-persistent CSMA
0.53
1-Persistent
CSMA
0.01
0.45
0.16
0.1 G 1

3. Achievable Throughputs
Aloha
Slotted Aloha
1-P CSMA
Non-P CSMA
CSMA/CD a
max

4. Frame Transfer delay for Ethernet

5. IEEE 802.3 MAC Frame 802.3 MAC Frame 7 1 2 or 6 2 or 6 2 4 Destination
Address
Source
Address
Preamble SD
Length
Information
Pad
FCS
Synch
Start
frame
64 to 1518 bytes
Destination address is either single address
or group address (broadcast = )
Addresses are defined on local or universal basis
246 possible global addresses
Single address 1
Group address
Local address 1
Global address

6. Ethernet frame (DIX Standard)7 1
2 or 6
2 or 6 2 4
Destination
Address
Source
Address
Preamble SD
Type
Information
Pad
FCS
Synch
Start
frame
64 to 1518 bytes