Troubleshooting Common Wired and Wireless Problems

Video Activity
Join over 3 million cybersecurity professionals advancing their career
Sign up with

Already have an account? Sign In »

8 hours 39 minutes
Video Transcription
this is less than 15.3 troubleshoot, common wired and wireless problems.
In this lesson, what we're going to do is look at different ways to troubleshoot wired and wireless connections. So let's go and get started.
Sometimes on your device, you'll see limited connectivity and windows. You'll see it limited warning in the system tray.
What you want to do At that point, your system is telling you that you have no connective ity or limited connectivity. Check your local I P address. Make sure you don't have a a p p i p A I p address or ah Pippa i p address with local connective ity on Lee.
And again those I P addresses will be 1 69 to 54
1.0 through 1 69 to 54.2 54.255
Um, if I p addresses obtained by D. A. C p and you do have an I P address performer ping test paying a local I P address on the network and also the gateway. Then from there, if you can get that far, try pinging a remote I p address out on the Internet.
No connective ity will be another message or another problem that will wanna happen. No connectivity known at network access Check for link like Is it plugged in? Sometimes the most often thing could be the root of your problem is that cable plugged in
and check the connection point at the switch. If it's a wire connection, see if there's a problem at the switch and may have came unplugged there or may have been inadvertently or accidentally removed or unplugged
from their try pinging the loop back I P address, which is 1 27.0 dot zero down, one that will tell you if there's something wrong with the device itself. The laptop or desktop that's testing the protocol. Stack the I P protocols that to see if there is not a problem with the software
availability and intermittent connections If you're
connection, is intermittently going in and out, paying a local I p address, do an I P config, which is a Windows Command on and get your i p address and try pinging your own I P address from there. Try pinging the default gateway. If it works, paying something again outside the network, another the way of troubleshooting, then
local resource is not available. If you're trying to reach a printer, check your connection on the network to make sure you do have an established connected on the network. If you are connected on that network, check the printer permissions. They may have been modified or changed or printer properties as well.
If the printer resource that is sharing that printer is off line and then you would not have a connection at that point. So
the resource is sharing that printer. Make sure it's online as well.
Now, if you're trying to read shares and those shares are unavailable, the server could be down. Were unavailable. The share permissions may have been modified as well. That'll be another reason why you can't reach network shares
If you're relying on D. N s, there could be a problem with your connective ity. And it's not resolving Dean s Check your I P configuration as well as the name and that share. And make sure that shared name has not changed.
If you're in a situation where your email is unavailable, if you're if that email is hosted on the network, I could be related to connective ity issues on that particular network. If this hosted in the cloud, it could be related to connective ity or Internet issues. Check your Internet connection to make sure that you are getting out on the Internet.
And if you're trying to connect to a Internet server
and you're relying on D. N s, that could have been modified or you may not have d. N s set up correctly or something. They've been changed with the dean s, and that's where you're not getting to that email.
Different ways to check and troubleshoot. The different resource is when you can't reach them.
I p Conflict happens when you configure I p address on your device and then i p address is in used by another device on that network. Now D a C p. Can resolve issues with I p address conflict. The D A C P server keeps track of all the resource is in the I P addresses that it gives out to each other devices.
Now Windows will alert you if a duplicate I P address is foul
to I. P addresses will not work on the same network. Two identical I P addresses will not work on the same network. If that happens, what you'll get is intermittent connective ity, and that other resource is down. Your I P address may work when it comes back online. Your connection may drop,
reboot or reset the nick to resolve this problem. Changes settings back and start again with a different I P address. Slow transfer speeds is another problem that will occur. Router or infrastructure congestion. There could be a love devices on the network causing congestion on the network or devices, or the network could be overloaded.
The resource is of the shares that you're trying to get to or whatever you're trying to reach,
maybe overloaded, and you may not be able to pull information or data from it in a timely fashion. So that's something else to look into.
There could be a problem with your net card on duplex and speed configuration could be a problem of the nick car, maybe set toe half duplex, and it could be on 100 mega big or gigabit network. So check that then, finally, it could be hardware issues with the nick card. It had been damaged, physically damaged or before various reasons.
Lo r f signals another problem, especially in the wireless environment that you may come across one of the biggest things with our F A low R F signal is interference interference from other devices that is using the same frequency that your access point or your router is on. What that happens, you have to use a device
that can scan that red work and see what other
frequencies are available so you can change your channel to another channel or another frequency. Ah, lot of access points and wireless equipment have that built in. Have that self were built in, so you could do like a wearing a site survey. To make that change
could be signal strength. You could be for too far away from the access point. With a wireless router
transmitting signal and Tanna receiving sin signore antenna. It could be a blockage. In between you and the transmitting antenna. Different types of mediums will block or impede your wireless signal.
Channel issues could be the wrong channel. That could be issue for a low our signal
signal bounce or Leighton see or multi path issues. What that means is, your wireless signal bounced off a lot of different structures in environment. And if there's a lot of restructures that's bouncing or reflecting that wireless signal, it could produce a low R F signal.
In times past, there was a situation I was involved in,
where we were connecting one radio in town into another radio antenna, and it was a relatively short distance. It was from one building to another building,
but it was a low R F signal, even though it was a stone throws away and it was perfect, clear line of sight. It was still was a low our signal, and the two antennas would not connect. The reason why they wouldn't connect was multi path.
There was so much R F reflection going on that are signal bound, bouncing off the surrounding buildings and other structures
that about time, the signal got to be receiving antenna.
It was too weak and could not be connected to buy the other antenna. So in that situation we have to back the power off. So multi path Leighton see and signal bounce is a something that you will occur out in the field,
and Oxo it could be an incorrect access point placement, You may try moving the access point to a different location to get a better signal.
No, es s I d. Sometimes you will go to configure a, um, a device to connect to the wireless network. And you can't find the s S i d. The network name is not found. It may be too far away and maybe out of the range and you can't see it or
someone or you may have SS idea may have been turned off the broadcast as this idea may have been turned off,
so make sure that the s s i D is turned on and not turned off. And if you want to leave it off in a situation, you have to manually connect your access point to that device, meaning go to the device and manually put in the S s I d and the network information to connect to it.
So what? In this lesson, we've discussed different ways to troubleshoot wired and wireless connections. When you're a technician out in the field, you can use thes troubleshooting steps to help you determine what the problem could be in a wired and wireless situation. We will see you the next lesson
Up Next
CompTIA A+ 220-1001

This course covers the CompTIA A+ 220-1001 exam components needed to pass both exams to earn the CompTIA A+ certification. This course will cover both exams with part 1 covering the 1001 exam. The course will also include labs and quizzes to help reinforce learning.

Instructed By