What is "Ethernet"?

Hello,
What is the "Ethernet" for - what does it do?
Thank you.

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Harry

Harry skrev:
> Hello,
> What is the "Ethernet" for - what does it do?
> Thank you.
>
> Posted Via Usenet.com Premium Usenet Newsgroup Services
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Ethernet is a network protocol that works in layer 2 of the OSI model.
It transfers signals from one device to another in either LAN, or, some
WAN networks (Optical ethernet)

Roger Jansson

"Harry" <> wrote in message
news:...
> Hello,
> What is the "Ethernet" for - what does it do?
> Thank you.

You asked this the other day and had plenty of good replies.

Beck

"Harry" <> wrote:
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>
Hello,Beck,
You are wrong!! i didnot previously ask that question. What i asked was:
"In "Add or Remove Programs" the Ehternet program allowed me to click
"Change or Remove", so i clicked "Change". Now the Ethernet
is gone. Is there anyway i can get it back?"
You are also wrong about my receiving answers, as i received
0 (zero) answers to my question. What is your problem?

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Harry

Roger Jansson rambled on in 24hoursupport.helpdesk:

> Harry skrev:
>> Hello,
>> What is the "Ethernet" for - what does it do?
>> Thank you.
>>
> Ethernet is a network protocol that works in layer 2 of the OSI model.
> It transfers signals from one device to another in either LAN, or, some
> WAN networks (Optical ethernet)

Uh-oh. I can see the deer-in-the-headlight look on the OP's face now.



--
The Old Sourdough
Did you hear about the blonde man who had 8 vasectomies?
He had to.... his wife kept getting pregnant.

The Old Sourdough

Today Harry attempted to dazzle everyone with this profound
linguistic utterance

> Hello,
> What is the "Ethernet" for - what does it do?
> Thank you.

It is an old-fashioned anesthetic, smelled awful! <grin>

Seriously, it is the common name given to the basic technology
of computer-to-computer network communication, although Ethernet
is neither the only protocol nor the most efficient, but it is
easy to implement and thus inexpensive.

--
ATM, aka Jerry

"My enemy's enemy is my friend, and my enemy's friend is my
enemy" - Middle East Maxim

All Things Mopar

Today Roger Jansson attempted to dazzle everyone with this
profound linguistic utterance

> Harry skrev:
>> Hello,
>> What is the "Ethernet" for - what does it do?
>> Thank you.
>>
>> Posted Via Usenet.com Premium Usenet Newsgroup Services
>> ----------------------------------------------------------
>> ** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
>> ----------------------------------------------------------
>> http://www.usenet.com
> Ethernet is a network protocol that works in layer 2 of the
> OSI model. It transfers signals from one device to another
> in either LAN, or, some WAN networks (Optical ethernet)
>
Neither LANs nor WANs need to be optical nor wire, anything that
transfers electrons according to the spec you quote qualifies,
including wireless.

--
ATM, aka Jerry

"My enemy's enemy is my friend, and my enemy's friend is my
enemy" - Middle East Maxim

All Things Mopar

On 2006-05-09, Harry <> wrote:
> "Beck" wrote:
>> "Harry" <> wrote in message
>> news:...
>>> Hello,
>>> What is the "Ethernet" for - what does it do?
>>> Thank you.
>>
>> You asked this the other day and had plenty of good replies.

I think that could have been someone else asking the same question; happens
a lot around here. Lurking and Googling seem to be going out of style.

> Hello,Beck,
> You are wrong!! i didnot previously ask that question. What i asked was:
> "In "Add or Remove Programs" the Ehternet program allowed me to click
> "Change or Remove", so i clicked "Change". Now the Ethernet
> is gone. Is there anyway i can get it back?"
> You are also wrong about my receiving answers, as i received
> 0 (zero) answers to my question. What is your problem?

Your first question was timed at:

Date: Tue, 09 May 2006 08:44:23 -0500

You then started a new thread with what seems to be a very closely related
subject, at:

Date: Tue, 09 May 2006 09:34:01 -0500

so there has not yet been time for your first question to make its way
around the planet and be seen by all those who might have useful answers
to make. Newsgroups are not at all like chat-rooms; be patient )

(Both your questions hit my screen at the same time - about 16:20 local).

--
-- ^^^^^^^^^^
-- Whiskers
-- ~~~~~~~~~~

Whiskers

"Harry" <> wrote in message
news:...

> Hello,Beck,
> You are wrong!! i didnot previously ask that question. What i asked was:
> "In "Add or Remove Programs" the Ehternet program allowed me to click
> "Change or Remove", so i clicked "Change". Now the Ethernet
> is gone. Is there anyway i can get it back?"
> You are also wrong about my receiving answers, as i received
> 0 (zero) answers to my question. What is your problem?

Yes you did ask yesterday in your post "What is an ethernet" when you also
asked which is better usb or ethernet.
However, I see now that you are correct in that nobody answered the first
part of the question about what is ethernet and only recommend that you use
it.
I guess we were both right and wrong
Anyway check this out.
http://en.wikipedia.org/wiki/Ethernet

Beck

Harry wrote:
> Hello,
> What is the "Ethernet" for - what does it do?
> Thank you.
>
After reading some of the crap replies, and half-answers to this
question, I'll try to dumb it down and actuall tell you what ETHERNET
is not just what a NETWORK PROTOCOL is.

Ethernet is a protocol for a STAR TOPOLOGY. i.e. the computers are
connected to a central HUB(s) or SWITCH(es), and all traffic on the
network echos on all lines simultaneously. Ethernet uses CSMA/CD which
stands for Carrier Sense Multiple Access with Collision Detection. Now
that you have the deer in the headlights look, I'll break that down for
you too. Carrier sense means that when one station in the network is
transmitting, it puts out a carrier tone on the line to tell the other
stations to wait to talk. So when your pc wants to talk on an Ethernet
it first listens for the Carrier tone to tell it whether or not someone
else is talking. If not, it puts the carrier tone on the line and
transmitts. Thus Carrier Sense, Multiple access means that any
station can access the line whenever there is no carreir tone, as
opposed to having to wait their turn as in a token-ring configuration.
This works most of the time, but once in a while two stations will
want to transmitt close to simultaneously, they will look to the line
and both will see no Carrier, so they will both try to grab the line
for themselves. When this happens, a collision occurs. Ethernet
devices can detect this, when it happens they back off the line, wait a
random period of time, and try to re-transmitt. More than likely the
two random times will be different and each pc will come back on at a
different time (one will probably see that the other got the line 1st
and have to wait.) This is what is meant by collision detection. Now
you have a better understanding of Ethernet. Go out now and learn
about bridges, and switches. They are a godsend to an ethernet network
because they create "collision domains," With what I've just told you
you'll get it easy.

If you want that explained too, just let us know. . . .

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