8/7/22, 8:06 AM
9.6 Wireless Troubleshooting
As you study this section, answer the following questions:
: Where is the best place to situate a wireless access point? : What types of objects might obstruct radio frequency wireless transmissions? : How many channels should separate two wireless networks? Which types of wireless networks require line-of-sight connections? : How do range and antenna placement affect wireless networks? - How does refraction affect an RF signal?
In this section, you will learn to:
Optimize a wireless network : Explore wireless network problems : Troubleshoot wireless network problems
The key terms for this section include:
Term
Definition
An antenna that creates a narrow, focused signal, which increases the signal strength and transmission distance. It provides a stronger point-to-point connection and is better equipped to handle obstacles.
Directional antenna
Omnidirectional antenna
An antenna that disperses the radio frequency wave in an equal 360-degree pattern This provides access to many clients in a radius.
Bandwidth saturation
The point at which all the available bandwidth on a connection has achieved maximum capacity and cannot pass any more data through the connection.
Device saturation
The point at which bandwidth utilization for the device is close to 100%
Frequency mismatch
Devices on the network are not broadcasting on the same frequency
Absorption
A signal passes through objects and the signal loses power
Radio waves pass through objects of different densities, causing the signal to bend or change speeds.
Refraction
This section helps you prepare for the following certification exam objectives:
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8/7/22, 8:06 AM
Exam
Objective
4.2 Secure switches and wireless networks
: 4.2.3 Secure an enterprise wireless network
TestOut Network Pro
5.2 Troubleshoot wired and wireless connectivity
: 5.2.3 Troubleshoot wireless network problems
5.4 Given a scenario, troubleshoot common wireless connectivity and performance issues.
5.4.1 Specifications and limitations - Throughput : Speed Distance Received signal strength indication (RSSI) signal strength :Effective isotropic radiated power (EIRP)/power settings : 5.4.2 Considerations : Antennas - Antennas - Placement : Antennas - Type : Antennas - Polarization : Channel utilization - AP association time : Site survey 5.4.3 Common issues : Interference : Interference - Channel overlap Antenna cable attenuation/signal loss RF attenuation/signal loss Wrong SSID : Incorrect passphrase Encryption protocol mismatch Insuffcient wireless coverage Captive portal issues : Client disassociation issues
CompTIA Network+ N10-008
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