6.2 - Wired Ethernet Flashcards
__________ was originally developed by DEC, Xerox, and Intel but has since become a standard formalised by the IEEE as IEEE 802.3
Ethernet
Ethernet is a layer 2 protocol — it operates at the __________ layer
data link
Every Ethernet LAN needs hardware at layer 1, the __________ layer, that matches the requirements of the Ethernet software at layer 2
physical
__________ is the basic geometric layout of the network
Topology
How the network works conceptually; a logical data flow diagram (DFD) or logical entity relation diagram (ERD) in SAD
Logical topology
How the network is physically installed; a physical DFD or physical ERD
Physical topology
When we use hubs, Ethernet’s logical topology is a __________ topology
bus
When we use hubs, Ethernet’s physical topology is a __________ topology
star
The shared multipoint circuit computers connect to is often called a __________
collision domain
When we use switches, Ethernet’s topology is a __________ and __________ star
logical…physical
Hub-based Ethernet uses a __________ circuit
half-duplex
Switch-based Ethernet uses a __________ circuit
full duplex
The prevention of the collision that can happen when two computers on the same circuit transmit at the same time
Media access control
Ethernet uses a __________ media access control technique
contention-based
Ethernet’s media access control technique is called ____________________
Carrier Sense Multiple Access with Collision Detection (CSMA/CD)
Can be termed as “ordered chaos”
CSMA/CD
Like all contention-based techniques, __________ wait until the circuit is free and then transmit
CSMA/CD
The solution to a collision is called __________ (CD)
collision detection
If the NIC detects any signal other than its own, it presumes that a collision has occurred and sends a ________________
jamming signal
The __________ standard revolutionized Ethernet and made it the most popular type of LAN in the world
10Base-T
Today, 100Base-T and __________ are the most common forms of Ethernet
1000Base-T
