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Introduction to CWTS
This introductory Nugget to the CWTS series covers an exam and certification overview, exam objectives, and best practices for the getting the most out of this CWTS CBT Nuggets.
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00:10:12 |
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The Wireless Networking Industry
This nugget covers standards and regulatory bodies such as the IEEE, governing bodies like the FCC, and the Wi-Fi alliance. There is also a brief survey of the 802.11a, 802.11b, 802.11g, and 802.11n standards. The WMM, WMM-PS, WPS, WPA, and WPA2 implementations are also introduced.
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00:25:04 |
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Basic Wi-Fi Technology (part 1)
Topics in this first technology nugget include: infrastructure vs. ad-hoc mode; service sets; active and passive scanning; authentication and association; frequencies and channels; and data rates vs. throughputs.
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00:28:15 |
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Basic Wi-Fi Technology (part 2)
In this continuation of basic technology we will cover: range, coverage, and capacity; dynamic rate switching, channel re-use and co-location; distribution system and roaming; power-saving options and protection mechanisms.
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00:34:56 |
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RF Fundamentals (part 1)
Radio Frequency Mathematics - Yes, there will be math! But don't fret because it won't be painful. Let's talk about Watts, Milivolts, Decibels, dBm, dBi, and EIRP.
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00:26:00 |
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RF Fundamentals (part 2)
Discussion of radio frequency wireless properties. The topics covered include: wireless characteristics, interference issues, line-of-sight, fresnel zones, RSSI, and SNR.
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00:29:46 |
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RF Fundamentals (part 3)
This nugget covers the characteristics of spread spectrum technology and more including spread spectrum concepts, DSSS, OFDM, as well as channel overlap and re-use.
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00:35:56 |
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Antenna Theory
In this exploration of antenna theory we will discuss polarization, diversity, and antenna categories such as omni-directional, semi-directional and fully directional. Different types of antennas are investigated including rubber duck, patch, panel, yagi, parabolic dish, and grid. This nugget finishes up with antenna accessories like arrestors and connectors.
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00:22:03 |
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Antenna Practice
We go deeper into omni directional, semi-directional, and fully directional antenna implementation. We explore additional topics like azimuth and elevation charts, antenna usage, link budget, antenna mounting, and antenna accessory deployment.
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00:36:27 |
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WLAN Infrastructure Hardware
Here is an excellent exploration of a wide variety of wireless LAN components including access points, wireless bridges, wireless routers, repeaters, WLAN controllers, and PoE devices.
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00:33:16 |
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Wireless Client Components
Its time to take a look at the end station side of the wireless equation. Here we look at layer 2 and layer 3 connectivity, client hardware components like PC cards and wireless USB, and accompanying client utility software.
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00:36:54 |
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WLAN Design Fundamentals
This design nugget covers a number of wireless scenarios including: Small Office/Home Office (SO/HO), Branch-Office/Remote-Office (BO/RO), building-to-building, public wireless hotspots, municipal-law enforcement, corporate guest wireless vlan, wireless ISP, and planes/trains/automobiles.
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00:43:11 |
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Site Surveying and Installation (part 1)
Part one of site survey concepts covers the following topics: information gathering, physical and data security requirements, site-specific documentation, as well as documenting the network, connectivity, and power. You will also learn how to understand RF coverage, client connectivity requirements, and antenna usage and placement.
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00:36:12 |
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Site Surveying and Installation (part 2)
This nugget is a continuation of the previous one as we explore MCA and SCA; active and passive surveys; manual vs. predictive methods; surveying mesh access; using protocol and spectrum analyzers; and site survey best practices.
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00:32:22 |
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Troubleshooting the WLAN
Troubleshooting is one of the most valuable skills that a wireless network engineer can possess. This nugget explores decreased throughput, connectivity problems, weak signal strength, and issues with device upgrades.
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00:35:04 |
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Optimizing the WLAN
Let's take a look at optimization in the form of hardware selection and placement, addressing interface issues, client load-balancing, analyzing client capacity and utilization, as well as multi path and hidden node.
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00:23:05 |
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Wireless Security (part 1)
The first WLAN security nugget covers legacy protections like SSID hiding, MAC filtering, and WEP; user-based security like 802.1X; pass phrase-based security; push-button/pin-based security; and TKIP and CCMP encryption.
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00:36:56 |
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Wireless Security (part 2)
This final nugget of the CWTS series continues the security coverage with topics like VPNs, wireless IDS/IPS, captive portals, and regulatory compliance issues like HIPAA and PCI.
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00:36:25 |
