Date: Wed, 21 Aug 2002 12:13:27 -0400 From: "chromexa@ovis.net" <chromexa@ovis.net> To: work@thuntek.net, freebsd-newbies@freebsd.org Cc: chromexa@ovis.net Subject: RE: How important is Physical? Message-ID: <187160-220028321161327658@M2W036.mail2web.com>
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Original Message: ----------------- From: Work work@thuntek.net Date: Wed, 21 Aug 2002 09:42:58 -0600 To: freebsd-newbies@FreeBSD.ORG Subject: How important is Physical? Pie ChartsHello, 1st post. I work for an ISP that runs Freebsd unix and we also service several Office complexexes. From CATV background, we always measured the DB Signal strength to determine how far a cable can run, and how many units you can serve, without requireing amplification. In networking are these mattters important? If so, how many computers can you run out of 1 network, and what unit of measure do you use to determine signal strength? Also, how important is Grounding? In addition to the ground or neutral circuit that is the 3rd prong on a normal 110 volt plug? You can answer the in the group or to me at work@thuntek.net . thanks Mike Harris Gee, having done both, uh let's see, how do I say this. They are sort of different worlds. Somethings still sort of apply. But it is not like radio engineering where you talk about field strengths, line of sight over the 4/3s earth and the like. The metrics are looser and more foggy in my not so humble opinion. There are some things like address space, where for example if you are going to have this many machines you need to get this type of domain and the like. Those are very clear things. Other things seem rule of thumb like to me. The Network would be best if we did it this way, this many systems, that can handle this much data, which are best arranged in this manner etc. This is an interesting high level question. For example to my mind nothing in digital technology gets as "black artsy" as antenna design. Uh, field strength and all that and wireless propagation stuff can be remarkably spooky many a time. I suspect digital is more rule of thumb like. At least that is my impression. It would be interesting to hear from other people who have done both. Like any AM or FM Radio Broadcast Engineers. Anyway that is my first take on it. Have Fun, Sends Steve P.S. Let's hope mail2web doesn't mung this message -------------------------------------------------------------------- mail2web - Check your email from the web at http://mail2web.com/ . To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-newbies" in the body of the message
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