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Ethernet FAQ



Frequently Asked Questions about Ethernet.

This FAQ about Ethernet was compiled and written by James Messer James@NetworkUptime.com with numerous contributions by others.

-1.1] What is this FAQ? (comp.dcom.lans.ethernet)
This FAQ will attempt to explain and decipher the intricacies ...
-1.4] Who provides information to the FAQ? (comp.dcom.lans.ethernet)
In many cases, the FAQ questions and answers are summarized from ...
-2.1] What is Ethernet?
Ethernet is the IEEE 802.3 series standard, based on ...
-2.2] What is the history of Ethernet?
The original Ethernet specification began in the early 1970's ...
-2.3] What is CSMA/CD?
Carrier Sense Multiple Access with Collision Detection is the ...
-2.5] Where are the IEEE specifications? (Introduction to Ethernet)
The IEEE specifications can be purchased from the IEEE at:...
-3.1] What are the different physical Ethernet network types?
Some of the physical Ethernet types as defined in the 802....
-3.2] What does baseband and broadband mean? (Ethernet Physical Layer)
A baseband network has a single channel that is used ...
-3.3] What is the difference between a bus topology and a star topology? (Ethernet Physical Layer)
A bus topology is a networking architecture that is linear, ...
-3.4] What physical Ethernet topologies are no longer popular? (Ethernet Physical Layer)
There are a number of physical networking components specified ...
-3.5] What are the most common physical Ethernet networks used today?
Most modern Ethernet networks use twisted pair copper cabling ...
-3.8] What pin assignments are used in twisted-pair Ethernet cabling?
Twisted-pair Ethernet (10BASE-T, 100BASE-T, or 1000BASE-T) uses ...
-3.9] Can two Ethernet stations be directly attached with 10BASE-T?
Two Ethernet stations can be directly attached to each other, ...
-3.11] What is propagation delay? (Ethernet Physical Layer)
The propagation speed of a medium refers to the speed that the ...
-3.12] What is an interframe gap? (Ethernet Physical Layer)
The inteframe gap is the amount of time that is specified ...
-4.1] What are the different Ethernet frame formats? (Ethernet Data Link Layer)
Ethernet Version 2 and IEEE 802.3 Frame ...
-4.2] What is transparent bridging? (Ethernet Data Link Layer)
Transparent bridging is a method to connect two similar ...
-4.3] What is the spanning tree protocol? (Ethernet Data Link Layer)
Spanning tree is a protocol defined in IEEE 802.1q to ...
-4.4] What is Ethernet switching?
From a functional point of view, switching is exactly the same ...
-5.1] What is a collision, and how many collisions are bad? (Ethernet Errors and Troubleshooting)
Ethernet networking uses collisions as one of the contention ...
-5.2] What is the Signal Quality Error (SQE) Test? (Ethernet Errors and Troubleshooting)
The SQE Test is used to test for the collision present ...
-5.3] What is jam? (Ethernet Errors and Troubleshooting)
When a collision is recognized by a transmitting station, a ...
-5.4] What is a late collision, and why is it bad? (Ethernet Errors and Troubleshooting)
A collision is considered late if the jam occurs after ...
-5.5] What is a runt? (Ethernet Errors and Troubleshooting)
In Ethernet networks, any frame shorter than the minimum 64 ...
-5.6] What is jabber? (Ethernet Errors and Troubleshooting)
Jabber is described most often as a frame greater than the ...
-5.7] What is a CRC/Alignment error? (Ethernet Errors and Troubleshooting)
When a station sends a frame, it appends a Cyclical ...
-5.8] What non-commercial software is available to monitor an Ethernet network?
A list of commercial, shareware, and freeware software is ...
-6.1] What Ethernet-related books are available?
The Certified Network Expert (CNX) consortium described ...
-6.2] What certifications are available regarding Ethernet networks?
An Ethernet-specific certification is available through ...









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