W10L2 - Ethernet History and Cabling Flashcards
The layers that Ethernet is a part of in the OSI model
________ is a part of both link and physical layers
LAN
(Ethernet) Local Area Network
What is Local Area Network (LAN)?
Users share a set of cables and take turns to exchange info in some
LAN Token Ring
Special type of organizing a bus topology to control access to a medium
A node may only transmit when it has the token
Token is passed around in the ring
Coaxial Ethernet CSMA/CD
Carrier Sense: don’t speak over other signals
Multiple Access: multi nodes sharing a network
Collison Detect: if another station is transmitting, wait for so long
Coax drawbacks
Heavy and expensive
Tighter the twist in a cable
The more resistant to interference
Standard cable used for Ethernet
Category 5 cable
Difference between Cat 5 and Cat 6 cables
Plastic core to separate pairs (reduce cross talk)
What did Hubs do?
Send frames out of all ports (broadcast)
Why are switches superior to Hubs?
Listen to traffic arriving on ports, remember which nodes transmit through each port
Direct frames out appropriate port as learned
CSMA
Carrier -Sense Multiple Access
CD
Collison Detection
________ is a part of both link and physical layers
The layers that Ethernet is a part of in the OSI model
(Ethernet) Local Area Network
LAN
