layer 1 or layer 2

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where does nic operates ?

According to trainsignal level 1
according to crammaster level 2

 

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A NIC is a level 2 device.

 

Good question. It is hardware - so level 1. It has firmware on it to do level 2, and in some cases higher levels.

I've also seen both answers, and my *personal* opinion is that the correct answer is "Normaly 1 and 2".

Harry.

 

As Harry said, some devices exist in that "twilight state" bridging two layers. Pick up the latest edition of the Sybex Network+ Study Guide and read that. It tends to be pretty true to the expectations of the exam. Also, have you checked the validity of your sources? I'm a little suspicious of testimonials like the one on the Examforce site: "Passed the 70-431 with 1000!!! Thank you ExamForce." -P. Meister

 

'Which of the following technologies provide simple password arrangement between wap and host'

a ssid
b wep
c ppp
d pptp

I've picked wep. but according to cramm it's not the right one.

 

Stop!

Whatever the relative validity of your information sources, they are still copyrighted material so please, please do not post questions verbatim. If you must ask such a question, reword it so that it is not really recognizable as the original question.

Two more things:

One, you are "mixing" your topics and shooting from the hip with your questions. The concept of a NIC and the concept of authentication are two different things, worthy of two different threads.

Two, Did you search for the answer to this query beyond just the testing software you're using? Chances are a quick "Google" of the subject would yield a lot more information more quickly than posting the question here and waiting (sometimes hours or days) for a member to answer. Try looking up these questions first (Google is your friend) and only when you've exhausted your resources and are truly stumped, post the question here along with the efforts you made to find out the answer yourself before hand. You'll learn more that way.

Thanks.

-Trip

 

when i was studying for N+, I am sure the Sybex book referred to a NIC as a layer 1+2 device.

 

I see your point and understand that you are trying to minimize potential legal liability of a forum, I do understand that.
But that question, I've found in 3 different materials. So can you really apply copyright to a single question ? Or should I just omit the possible answers and quotation marks.
I'm quite familiar with Google. I was posting this more in a sense to take your answer from any 'quiz' type app with a pinch of salt.
Didnt realize that this forum should be used only as a last resort.

At any rate I'll refrain from posting any more 'errors' in a material.

Thank you

As far as posting on different treads, you are 100% right.

 

as far as I know a nic is 1 & 2

1 being hardware

2 being firmware.

And beacuse a nic is harware and has firmware it is both.

 

popeye67,

It depends on perspective. From a Systems perspective, Layer 2. From a Network perspective, Layer 1.

 

How it was explain to me when I was studying, what that a nic was a level 1 device that operated on layer 2.

It made sense to me. I don't know about anyone else though.

 

its kinda like saying a bike work because some feet are peddling it, but it needs wheels too.

 

It's far less useful to try to shoehorn a network device like a NIC into one single OSI layer, and far more useful to understand what functions each of the OSI layers are designed to perform. When you know what the Physical layer is and what the Data Link layer is, you don't have to struggle about what the "correct answer" is.

For the record... poorly written practice exam questions are the source of many a conflict and debate. At some point, you simply have to realize that it's not about the "right answer" and it's all about "understanding the concept"... because sometimes, the questions simply aren't correct.

 

Put simply:

A NIC is responsible for converting binary digital information into an electrical signal when sending, and converting it back if receiving - that is layer 1.

The NIC also determines the low level format of the network - for example ethernet, token ring etc (you can't have a NIC that operates on both network types directly) - and that is layer 2. The NIC also holds the MAC address of the interface, which is the layer 2 identifier of the device on the network - again level 2.

So, a NIC covers layer 1 and 2 functions.

 

^spot on!!

All you have to remember is that a nic works on layer 1 when dealing with zeros and ones and the wire, then puts its thinking cap on and works at level two when dealing with Mac addresses and the like.