Online Cwna eLearning Training

Site Survey Fundamentals In this module, we discuss the process of conducting a site survey, also known as a "facilities analysis." We discuss terms and concepts with which you are probably familiar if you have ever installed a wireless network from the ground up. more...

Introduction to Wireless LANs This module discusses the wireless LAN market, presenting an overview of the past, present, and future of wireless LANs and provides an introduction to the standards that govern wireless LANs. more...

RF Fundamentals This module discusses the properties of radio frequency (RF) radiation and how its behavior can affect the performance of a wireless LAN. We introduce the uses and properties of antennas and explain the mathematical relationships that exist in RF circuits and why they are important, as well as how to perform the necessary RF math calculations. more...

Spread Spectrum Technology This module defines and describes spread spectrum technology and discusses how it is used according to FCC guidelines. more...

Wireless LAN Infrastructure Devices This module covers the different categories of wireless network infrastructure equipment and some of the variations within each category. more...

Antennas and Accessories In this module, we will discuss the proper methods for installing each kind of antenna. We will explain polarization, coverage patterns, and appropriate uses of antennas. Additionally, we describe the many different items that are used to connect antennas to other wireless LAN hardware. more...

Wireless LAN Organizations and Standards In this module, we discuss the role of the Federal Communications Commission (FCC) in defining and enforcing the regulations governing wireless communication and the role of the Institute of Electrical and Electronics Engineers (IEEE) in creating standards that allow wireless devices to work together. more...

The 802 11 Network Architecture This module covers some of the key concepts found in the 802.11 network architecture. You will read about the process by which clients connect to an access point, the terms used for organizing wireless LANs, and how power management is accomplished in wireless LAN client devices. Without a solid understanding of the principals covered in this module, it would be quite difficult to design, more...

Physical Layers In this module, we discuss some of the media access control (MAC) and Physical Layer characteristics of wireless LANs that are common to all wireless LAN products, regardless of the manufacturer. We also explain the difference between Ethernet and wireless LAN frames and how wireless LANs avoid collisions. more...

Troubleshooting Wireless LAN Installations In this module, we discuss the more common obstacles to successful implementation of a wireless LAN, and how to troubleshoot them. Wireless LANs have their own set of challenges, mainly dealing with the behavior of RF signals. There are different methods of discovering when these challenges exist and each of the challenges discussed has its remedies and workarounds. more...

Wireless LAN Security In this module, we discuss the much-maligned 802.11 specified security solution known as Wired Equivalent Privacy (WEP). We explain the various methods that can be used to attack a wireless LAN to prepare you (as an administrator) to prevent security problems. more...