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- Sometimes you'll encounter
slow wireless transfer speeds,

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and it could be

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that you just need to
upgrade the wireless adapter

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on the laptop or the PC,

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and you might be running
something like 802.11g.

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You may wanna consider upgrading
to 802.11n or 802.11ac.

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Just make sure that
it's gonna be compatible

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with whatever wireless access
point you're connecting to.

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So if you upgrade your wireless adapter

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on your laptop or your PC to 802.11ac,

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you wanna be sure that
the wireless access point

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is accepting 802.11ac 5 gigahertz signals.

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Slow wireless data transfer rates

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can also be caused by interference,

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and we talked about the interference.

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It could be almost anything electronic,

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especially if that device is working

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within the same frequency range

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as your wireless adapter or
your wireless access point,

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so smartphones, tablets, laptops,

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PCs, other wireless access points,

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a neighboring company's
wireless access points,

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and any other electronic
or electrical devices

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that work on the 2.4 or
5 gigahertz spectrums.

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It could be a microwave.

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It could be HVAC equipment.

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It could be anything like that.

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So you wanna watch for that RFI,

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that radio frequency interference,

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and one of the things to consider
is how you're connecting.

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For example, with 802.11n,

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you could connect via 2.4
gigahertz or 5 gigahertz,

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and if you remember,

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our SOHO router that
we showed can transmit

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on both of those
frequencies at the same time

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as two separate wireless networks.

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What I usually do is I put a
2.4 on the end of the SSID name

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for the wireless network

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that is transmitting at
802.11n at 2.4 gigahertz.

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So that's something to keep in mind.

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Also, if you have a lot of other devices

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on the 2.4 gigahertz frequency,
and that's very common,

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then you might want to change it over

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and just have your wireless
access point broadcast

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on 5 gigahertz for 802.11n,

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and try to stay away from
802.11g and especially B.

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With 802.11ac, you don't have
to really worry about that

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because that's a 5
gigahertz frequency only.

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So another thing to watch for

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is interference of different types,

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and then which type of 802.11n
network you're connecting to.

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Then there's also the distance.

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The farther away you are from
the wireless access point,

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the slower your data transfer is gonna be.

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That's it, because the
radio signals have to pass

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around or through walls and doors

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and ceilings and floors
and everything else,

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so the distance is really
gonna be the big factor.

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I usually like to keep computers

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and mobile devices on a LAN indoors.

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If they're indoors, I like to keep them

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within a hundred feet of
the wireless access point.

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Once you go beyond a hundred
feet, even with 802.11n and AC,

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you can get a lot of problems,

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so watch out for that distance.

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Now outdoors, you can
usually double the distance,

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but you still do have to
watch for how far you go

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and the interference as well.

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And then finally, throttling and capping.

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It's basically the same thing.

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It's kinda like your
internet service provider

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can cap your rate, your
data transfer rate.

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So you might have an internet connection

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that could possibly go as fast
as 200 megabits per second.

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The potential is there, but
they're not gonna give you that

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because there's so many
people sharing that network,

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so they're probably gonna cap you

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at something like 30 megabits per second,

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or you can pay more to get
50 megabits per second.

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So this is throttling
the network transfer.

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Sometimes it might be
throttled up and down

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at various times during the day.

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It might be throttled down during lunch

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and at, say, four o'clock in the afternoon

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when people are getting
all their work done

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before they leave.

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So throttling is actually
slightly different than capping,

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but both are possible on
a wireless access point

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that a network
administrator might want you

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to only have a connectivity
of 100 megabits per second,

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even though your connection
could go as fast as 300 or 600

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or even one gigabit per second.

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Here's one of our SOHO routers,

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and this one actually does
provide for capping for guests,

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and they call it bandwidth control.

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And so if we go to the guest network here,

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you'll see we have access
and bandwidth control,

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and you can allow guests
access to the local network

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and enable the bandwidth
control for those guests,

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and you can have that at 256
kilobits per second or more,

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and you have basically your ingress,

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that's inbound communications,
and egress, that's outbound.

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So if the person on the LAN
is trying to go to a website,

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they'll download information
at 1,024 kilobits per second

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and they'll upload their emails at,

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say, 256 kilobits per second,
so ingress and egress.

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That's bandwidth control, so
that's one example of that.

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If you're a guest on a
wireless access point,

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that could be one of the reasons

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why you have a lower connection,

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a lower data transfer rate
than you would normally expect.

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So throttling and capping,
distance and interference,

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gotta watch for all those

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when you're troubleshooting
slow transfer speeds.

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And let's take a look at our AV editor,

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and here we are.

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Now, we can take a look at
our wireless access point

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by going down here to the Start button.

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Right-click on that and
go to Network Connections.

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This is Windows 8.1 by the
way, and we'll right-click

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on our wifi connection and go to Status.

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This is where you can go

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to quickly find a lot of
information about your connection.

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Now you can see the signal
quality here, full bars,

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full five bars, so we're good with that,

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and it should be because
it's an 802.11ac connection

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and it's about eight
feet from the SOHO router

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with the wireless access point,

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so it should have good connectivity.

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The speed is at 288 megabits per second,

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so we're pretty much maxing out

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at 300 megabits per second
for this connection,

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and this is indeed an 802.11ac connection.

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You might see this speed
also for 802.11n connections.

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You might see faster speeds
than this for 802.11ac,

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but when you start to...

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If you have an N or an AC connection

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and you start to see speeds
of, say, 50 megabits per second

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or 20 megabits per second in comparison,

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you'll probably also see

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that the signal quality has degraded.

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The two usually go hand in hand.

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It might not be, but
generally that's the case.

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So you wanna check all those
things that I mentioned

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and look in here at the wifi status

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and see exactly how your
connectivity is doing.

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You can also get here by
bringing up the taskbar here,

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and you'll see the wireless network here.

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We can click on that,

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and that'll bring up your
wireless connections here.

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Could also right-click on that

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and go to Open Network and Sharing Center,

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and from here, you could
go to your wifi connections

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or change your adapter settings,

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which is where we went
from the Start button.

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I like the Start button for that reason.

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It works pretty well.

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You have lots of features here

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when you right-click the
Start button in Windows 8.1,

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a lot of the ones that I use very often.

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I like how this is designed by default.

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You can modify this

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with third-party applications if you want

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and modify this within
Windows to show more items,

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but I like the defaults here:

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the Run prompt, Control
Panel, Task Manager,

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Command Prompt as admin,

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Computer Management, and
that Network Connections,

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'cause you're gonna go there a lot

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for your network connectivity

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to check the status of a connection,

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to enable or disable that wifi connection,

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and then to go to Properties

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and check the IP Version 4 or
IP Version 6 configuration.

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So that's a nice little
setup there in Windows 8.1.

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And so remember how to
get to the status window

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for the exam and for the field
for your wifi connections

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and for your LAN connections,

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'cause you can troubleshoot
from here as well.

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And if you do have a
problem with your speed,

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you can try to diagnose it

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and use the built-in troubleshooting tool

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within the Control Panel.

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You may have some luck
with that, you may not,

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but if you remember all of the things

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that we talked about with
network troubleshooting

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within this course, you should
be able to fix these problems

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and fix anything that
is caused by distance

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or interference or the wrong network type

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or a problem with the
wireless access point

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or this wireless adapter.