Discount Computers

Wireless Devices, What to Look For: Range, Speed and Standards

Michael Knowles

Not sure what you\’re doing in your wireless card shopping? Want
to make sure you\’re buying the right thing but have no clue what
it is you\’re looking for? Well, you\’ve come to the right place.
When you\’re looking to buy a wireless network card, I can tell
you right now that you\’re looking at three key issues: range,
speed, and standards.

A Typical Specification

This is a specification for a Linksys wireless PCMCIA laptop
card I just bought:

11 Mbps A IEEE 802.11b wireless Type II PCMCIA-type network card
giving you wireless Ethernet access up to 1,640 feet away / For
Windows Rugged metal design with integrated antenna Advanced
power management features Compatible with Windows 95, 98,
Millennium, NT, & 2000 To use with your desktop PC, add the
Linksys WDT11 Instant Wireless PC Adapter

Now, some of those things can be pretty much ignored. Really,
Compatible with Windows 95, 98, Millennium, NT, & 2000? That
means nothing. The reason I\’ve put it here, though, is so you
can see which things are important to keep an eye out for.

Range

See where it says \’up to 1,640 feet\’? This tells you that the
maximum range of the wireless card you\’re looking at is 1,640
feet. That\’s what it would be if everything was perfect. In
practice, thick walls and interference can reduce this by as
much as 90%.

Without enough range, your wireless network is going to be
pretty useless. It\’s not much fun having no wires when you have
to keep all the computers in the same room to get them to
connect to each other.

As a rule of thumb, unless your walls are made of drywall or
wood, it\’s best to buy about four times the strength you\’d think
you\’d need. Even in perfect conditions, get twice as much, to be
safe.

Speed

Do you see where it says \’Mbps\’ in that description? That number
is the speed of the wireless connection. 11 Mbps is about one
and a half megabytes per second — to convert megabits (Mb) to
megabytes (MB), just divide by eight. 802.11b wireless cards all
have a speed of 11Mbps, while 802.11g ones run at 54Mbps — the
next generation will be even faster.

On your local network, speed is important to your wireless
network because it\’s going to directly influence how long you
have to wait for things like files to transfer from one computer
on the network to the other. For Internet use it is less
important however, because there are currently very few Internet
connections running at speeds over 11Mbps — it\’s really as much
as you need, at least for now.

Standards

Somewhere in the specification of what you\’re looking at, you
should see the number \’802.11\’, followed by a letter \’a\’, \’b\’ or
\’g\’. This is the standard that the wireless device conforms to,
and tells you whether you will be able to use it with your other
wireless devices.

Basically, 802.11b and 802.11g are compatible with each other.
802.11a is not compatible with either and is quite a bad
standard all round, so you shouldn\’t buy 802.11a. Out of b and
g, b is cheaper but slower, while g is more expensive but
faster. It\’s worth considering that adding a b-speed device to a
network that has g-speed devices will often slow the whole
network down to b-speed, making the g-devices pointless.

If your wireless device doesn\’t conform to the right standards,
it\’s not going to be much good to you. I often see naive people
bidding for used wireless equipment on eBay, not realizing that
it\’s going to be terribly slow and not work with any other
equipment they might have. Always make sure that you check what
standard the wireless equipment is — if you don\’t know the
802.11 letter, don\’t buy it!

About the author:
Post your articles for FREE on http://www.postyourarticles.com
You can even use them on your website as long as you leave them
intact. Michael Knowles http://www.freedomisyoursonline.com
Copyright 2005

I currently am the webmaster for several sites.
http://www.freedomisyoursonline.com http://www.trafficgnomes.com
http://www.postyourarticles.com I love Internet marketing and
affiliate marketing

Today\’s Software

Like a kid jumping into the pool feet first, the building
industry has rapidly gone from lagging to leading in the use of
computers. A mere 10 years agone, the world was fair acquiring
secondhand to Windows 95. And although some progressive
contractors were already using office automation, such as word
processing and accounting, to gain a competitive advantage, many
resisted, continuing to use their tried-and-true methods. Today
computing device systems and the software system that drives
them rich person gone from being individual tools applied to
specific tasks to being an integrated part of how almost
everything works.

And software package improvements, rather than something to be
feared or resisted, now often make the same piece of equipment
perform bettor. Contractors wealthy person jumped aboard with
these improvements, and computers give birth become a vital cock
in about every contractor\’s arsenal. There exploited to be a
clear distinction between the different types of electronic
computer organisation components. Hardware was what you took out
of the box and connected together with wires and cables.
Software was the programming that came on floppy disks.

Each new piece of package was a collection of secret code words
and phrases that, once mastered, allowed you to crunch numbers,
move letters and characters, or render fancy graphics. Today,
speed, capacity, and connectivity deliver dramatically improved
in both hardware and . And as the engineering has advanced, the
cost per unit of productivity has continued to drop. The result
is that information processing system engineering science today
offers contractors a powerful array of tools to do what needs to
be done wagerer and faster, more efficiently and more
effectively than just about of us even out dreamed of a decade .

The refined renderings based on this information Army for the
Liberation of Rwanda easier to interpret than those from
equitable a few years . Johnston says that today\’s tin show
contractors the \”invisible reality\” of what is embedded in the
slab. This selective information is particularly useful in
coring and drilling slabs and in other repair and retrofit work.
Data Builder (World Wide Web.databuilderinc.com) offers products
designed to electronically collect and organize totally the
paperwork associated with a undertaking. What that means is the
troupe\’s programmers bear come up with a way to convert
altogether the electronic and hard copy documents–in whole the
various formats that they might originally exist–into
electronic that is easily stored, managed, and retrieved.

Realizing that task required by the owner, at labor completion,
as well as by the projection squad during structure, the ship\’s
company offers two separate products that tin can also work
together. Using a propose Web site, the Electronic Project
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systems, this means the almost current version of each document
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Closeout captures relevant entropy at closeout and compiles it
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management.

About the author:
Sussy Harlet http://www.northfacefleece.net

If you acknowledge the foe and recognize yourself, you need not
fear the result of a hundred battles. If you recognise yourself
merely not the foeman, for every victory gained you volition
also suffer a defeat. If you cognize neither the opposition nor
yourself, you testament succumb in every battle.\” – Sun Tzu, The
Art of War. Take the immortal words of Sun Tzu, cognise
yourself. Or here, experience your computer code. Do you live
however your codification wish react to an tone-beginning. Do
you roll in the hay if your diligence or data is guarantee, or
if at that place ar huge security measures holes. If your
coating were under attempt, would you even love it. And what
approximately make out the . Do you make love a hack bequeath
approach your covering.

Do you sleep with what early warning signs to looking for, to
detect once your applications being hacked. Have you ever looked
at your lotion as a drudge would, and thought close to you would
plan of attack it. As a professional cyber-terrorist, in this
article, I leave guide you through the process hackers take to
exploit applications and systems. I\’m often asked, \”What should
I concern just about in my encode that hackers could exploit?\”
This is easy enough to answer for risks we get laid some
nowadays, simply it doesn\’t address the real problem.

I tin Tell you roughly the most popular onslaught vectors for
now\’s applications, just that only aid you . To truly assist you
become more ensure, I need to Teach you what to expression for.
I wish to enable you to do the analysis. This follows the old
proverb, \”Give a man a fish and he be able-bodied to eat ;
Edward Teach a man to fish and he never go hungry.\” This is true
for security system and your applications — well, not the whole
fishing part, only the teaching part.

You get the idea. Trying to track a on the Internet is like
nerve-racking to track the wild Abominable snowman in Nepal (I\’m
not sure in that location any tamed …). But in any case, if
the left no tracks, was silent, and hid where you weren\’t
looking or in a place you didn\’t have existed. would you find
him. If hackers tin can poke and prod your and potentially get
access to sections of your encipher or data that you weren\’t
expecting them to, you do it they thither.

Are you nerve-wracking to William Tell me that I toilet dodge
bullets?\” Morpheus: \”No Neo, I\’m stressful to distinguish you
that you\’re ready, you won\’t have to.\” I could separate you more
or less entirely the latest exploits and exactly what to facial
expression for to fix your specific and make sure it\’s insure.
We would talk around buffer-overflows, SQL injection, Cross-Site
Script hacking, the list goes on and on. We would be essentially
attempting to dodge the bullets; to headache or so each and
every little incoming onset. Once you ready, one time you start
thinking almost your applications and the environment in a
holistic manner, and in one case you controller your
applications to react the way you wishing them to or log the
activity they don\’t, then you be to protect against attacks that
haven\’t even been dreamt up yet. I\’m not saying your be 100%
assure, just that your ever be under your restraint.

You e\’er be aware of what\’s going on and what your threats .
That is the true nature of surety. It\’s totally most command.
You need to be in mastery. Logs, coupled with a strong
understanding of you may be attacked, is a huge step in the
right direction.

About the author:
Mike Cliff http://www.northfacejacket.net