Computer Networks/Wireless

This lesson introduces wireless networking concepts.

Objectives and Skills
Objectives and skills for the wireless networking portion of Network+ certification include:


 * Given a scenario, deploy the appropriate wireless standard
 * 802.11a
 * 802.11b
 * 802.11g
 * 802.11n
 * 802.11ac
 * Install and configure wireless LAN infrastructure and implement the appropriate technologies in support of wireless capable devices
 * Small office/home office wireless router
 * Wireless access points
 * Device density
 * Roaming
 * Wireless controllers
 * VLAN pooling
 * LWAPP
 * Wireless bridge
 * Site surveys
 * Heat maps
 * Frequencies
 * 2.4 Ghz
 * 5.0 Ghz
 * Channels
 * Goodput
 * Connection types
 * 802.11a-ht
 * 802.11g-ht
 * Antenna placement
 * Antenna types
 * Omnidirectional
 * Unidirectional
 * MIMO/MUMIMO
 * Signal strength
 * Coverage
 * Differences between device antennas
 * SSID broadcast
 * Topologies
 * Adhoc
 * Mesh
 * Infrastructure
 * Mobile devices
 * Cell phones
 * Laptops
 * Tablets
 * Gaming devices
 * Media devices
 * Given a scenario, troubleshoot and resolve common wireless issues
 * Signal loss
 * Interference
 * Overlapping channels
 * Mismatched channels
 * Signal-to-noise ratio
 * Device saturation
 * Bandwidth saturation
 * Untested updates
 * Wrong SSID
 * Power levels
 * Open networks
 * Rogue access point
 * Wrong antenna type
 * Incompatibilities
 * Wrong encryption
 * Bounce
 * MIMO
 * AP placement
 * AP configurations
 * LWAPP
 * Thin vs thick
 * Environmental factors
 * Concrete walls
 * Window film
 * Metal studs
 * Wireless standard related issues
 * Throughput
 * Frequency
 * Distance
 * Channels

Readings

 * 1)  Wireless network
 * 2)  Wi-Fi
 * 3)  Wireless router
 * 4)  Wireless access point
 * 5)  Wireless LAN controller

Multimedia

 * 1) YouTube: 802.11 Wireless Standards - CompTIA Network+ N10-006 - 5.3
 * 2) YouTube: Wireless Network Devices - CompTIA Network+ N10-006 - 2.7
 * 3) YouTube: Wireless LAN Controllers - CompTIA Network+ N10-006 - 1.2
 * 4) YouTube: Wireless Connections - CompTIA Network+ N10-006 - 2.7
 * 5) YouTube: Wireless Antenna Technologies - CompTIA Network+ N10-006 - 2.7
 * 6) YouTube: Using Wireless Networks - CompTIA Network+ N10-006 - 2.7
 * 7) YouTube: Troubleshooting Wireless Signals - CompTIA Network+ N10-006 - 4.3
 * 8) YouTube: Troubleshooting Wireless Configurations - CompTIA Network+ N10-006 - 4.3

Activities

 * 1) Set up and configure a basic wireless router using either a router emulator or your home router:
 * 2) * Use a SOHO router emulator to set up and configure a basic wireless router:
 * 3) ** Change the default administrator password for the device.
 * 4) ** Configure wireless security by setting a new SSID name and setting the security mode to WPA2 with a strong password.
 * 5) ** Research current firmware releases for the device. Locate the router's firmware upgrade page and review instructions from the router's Help page on how to update the firmware.
 * 6) * Review settings for your home router:
 * 7) ** Verify that the administrator password has been changed from the default.
 * 8) ** Verify that the SSID security mode is set to WPA2 with a strong password.
 * 9) ** Research current firmware releases for the device and determine whether a firmware update is required.
 * 10) Set up and configure a wireless access point using either an access point emulator or an available access point:
 * 11) * Use an Cisco: Wireless Access Point Emulator or your own device to set up and configure a wireless access point.
 * 12) ** Change the default administrator password for the device.
 * 13) ** Configure wireless security by setting a new SSID name and setting the security mode to WPA2 with a strong password.
 * 14) ** Research current firmware releases for the device. Locate the router's firmware upgrade page and review instructions from the router's Help page on how to update the firmware.
 * 15) ** Compare options and interface settings with the wireless router configuration above.
 * 16) Review  Wardriving.  Use a free wireless scanner and scan your environment for wireless networks:
 * 17) * Windows:
 * 18) *# Review Archive: BitDreamers: Improve WLAN Signal Without Additional Tools on Windows.and Wikipedia: NetSpot.
 * 19) *# Use the  command or download and install NetSpot and scan for wireless networks.
 * 20) * macOS:
 * 21) *# Review AppStorm: How to Discover Any Network with iStumbler and Wikipedia: NetSpot.
 * 22) *# Download and install iStumbler or NetSpot and scan for wireless networks.
 * 23) * Linux:
 * 24) *# Review TuxMobil.org: Linux Wireless Sniffer.
 * 25) *# Download and install a wireless scanner and scan for wireless networks.
 * 26) * Android:
 * 27) *# Review Google: farproc Wifi Analyzer.
 * 28) *# Download and install Wifi Analyzer and scan for wireless networks.
 * 29) * iOS:
 * 30) *# Review WLANBook: Free WiFi Scanner for iPhone and iPad Without Jailbreak.
 * 31) *# Download and install the Apple AirPort Utility and scan for wireless networks.
 * 32) Review  Wireless ad hoc network. Set up a wireless ad hoc network.
 * 33) * Windows:
 * 34) *# Review Microsoft: Set up a Computer-to-Computer Ad Hoc Network.
 * 35) *# Set up an ad hoc network.
 * 36) * macOS:
 * 37) *# Review MacObserver: How to Create and Use an Ad Hoc Network on Your Mac.
 * 38) *# Set up an ad hoc network.
 * 39) * Linux:
 * 40) *# Review ArchLinux: Ad Hoc Networking.
 * 41) *# Search the Internet for specific ad hoc networking instructions for your Linux distribution.
 * 42) *# Set up an ad hoc network.