Client Radio Power

N

netsider

Limp Gawd
Joined
Oct 12, 2004
Messages
466
http://snag.gy/eqVGo.jpg

I posted the question/image here. I understand what it's saying.. but in the real world, when is this even possible? I've used over 20 different 802.11 devices and I've never seen any option to "increase the client radio power", or anything to that effect. Can someone clear this up just a little for me? I even tried doing a Google search for it...

Thanks... :confused:
 
Almost sounds like a CompTIA Network+ kinda question as I remember a few of those that made me scratch my head. Cisco and other networking classes/books I've read never even mention messing with the power settings for either client or AP. Consumer gear often times comes at a fixed setting (third-party firmware sometimes allows you to change this), but in the enterprise this is also a "feature" that separates consumer gear from enterprise.

I didn't even know you could limit the transmitting power on the client side through the AP myself and it would seem unless someone told you that or you worked in the field you'd never assume that answer based off what most people see/work with. Perhaps I've just never seen it, but usually when you can see the AP and are unable to reach it, it means the AP signal is stronger than what your client is capable of sending too.

i.e. you buy a high gain/high powered antenna for a wireless router to send 1,000 feet away, but the clients are only capable of sending 200 feet away. Receiving is no problem but transmitting is. Never would have guessed this was a somewhat tweakable setting on an AP.
 
Yeah, that's where I'm confused. I know some access points do... but it says "client radio power." To me, that means the network adapter in the computer... and I don't think I'm wrong?

Also... this testing software gave me this other question and it's totally incorrect :mad::

http://snag.gy/axlzy.jpg

I mean.. am I stupid, or is it this software??
 
Oh, yea.. I'm sorry. I leave details out a lot of the time by accident. I'm doing the Certblaster software prep tests for A+ exam 220-702 (the 2009 edition that's going to expire soon, I already passed the first part a month ago). I also used a website called measureup that has Network+ and A+ study guides.. and the study guide on there for 220-702 (same test) has *completely* different questions.. odd. :(

After this, I'm preparing to take Network+ (already ordered the voucher). I just don't have a lot of good resources to learn from, or people to talk to... like some people do. I go to school, but the classes really don't help much. Everything they explain, I already understand. I don't seem to have the resources or means to learn anything beyond what I know now, and it's pretty frustrating. I'm a very motivated and I think I'm pretty intelligent... but not knowing WHAT to learn is very annoying. Sorry to rant ;)

Edit: BTW... the Measureup study guides are great... if that's what's actually on the test... you can find them on Google, but you need to pay. My school luckily paid for it.
 
netsider said:
Yeah, that's where I'm confused. I know some access points do... but it says "client radio power." To me, that means the network adapter in the computer... and I don't think I'm wrong?

Also... this testing software gave me this other question and it's totally incorrect :mad::

http://snag.gy/axlzy.jpg

I mean.. am I stupid, or is it this software??
Click to expand...

ROFL Mac OS X, your are right it is Vista. English is not my native language, but I did the mistake to do a certification exam in another language than english and the traduction introduced errors. Our instructors had to remove questions from the test to make us pass.

Perhaps the practice exams are badly traduced, or some errors have been introduced.
 
netsider said:
http://snag.gy/eqVGo.jpg

I posted the question/image here. I understand what it's saying.. but in the real world, when is this even possible? I've used over 20 different 802.11 devices and I've never seen any option to "increase the client radio power", or anything to that effect. Can someone clear this up just a little for me? I even tried doing a Google search for it...

Thanks... :confused:
Click to expand...


http://wireless.kernel.org/en/users/Documentation/iw#Setting_TX_power

But I guess if my client isn't using linux, he would need to find someone else because I wouldn't be able to help -.-
 
Cheetoz said:
http://wireless.kernel.org/en/users/Documentation/iw#Setting_TX_power

But I guess if my client isn't using linux, he would need to find someone else because I wouldn't be able to help -.-
Click to expand...

Windows also lets you set TX power. Its under properties --> advanced if you click on your wireless adapter in the device manager (on windows 7 and vista, not sure about others). Its almost always set to "Auto" though.

I did have an older Toshiba laptop where some built in power-saving software messed with the "auto" setting (It wouldn't increase the TX power when the signal got weak), but thats the only time I have ever heard of this problem.
 
If the client device supports CCX extensions then you can *sort of* control client output power from the network side....
 
netsider said:
[snip]
Edit: BTW... the Measureup study guides are great... if that's what's actually on the test... you can find them on Google, but you need to pay. My school luckily paid for it.
Click to expand...
Judging by your constant barrage of extremely poorly thought out questions, I'm doubtful of your claims that anything you've studied from is "great".

Transmit power is generally in the device properties. As far as I can recall, every Intel chip I've ever seen has some form of control.
 
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