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AT-CWNA - Wireless LAN Administration Course (CWNA)

The Wireless LAN Administration course provides the networking professional a complete foundation of knowledge for entering into or advancing in the wireless networking industry. From basic RF theory to 802.11 frame exchange processes, this course delivers hands on training that will benefit the novice as well as the experienced network professional.

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Prerequisites


Basic networking knowledge, including OSI model and IP subnetting.

Detailed Class Syllabus


Introduction to 802.11 WLANs


Discuss the standards organizations responsible for shaping the 802.11 Wireless LAN protocol
Learn how standards compliance is enforced for 802.11 WLAN vendors
Examine the 802.11 standard and various amendments
Discuss additional networking standards that are commonly used to enhance 802.11 WLANs

Radio Frequency Fundamentals


Physical aspects of RF propagation
Types of losses and attenuation that affect RF communications
Types of modulation used for wireless communications
How channels and bandwidth are related to each other in wireless networks
Three types of Spread Spectrum used in wireless networking

RF Power Output Regulations


Understand international, regional, and local RF spectrum management organizations
Understand RF channels in the unlicensed 2.4 GHz and 5 GHz frequency ranges
How power output limitations are enforced by the FCC for Point-to-Multipoint (PtMP) and Point-to-Point (PtP) wireless connections

Power over Ethernet


Recognize the two types of devices used in Power over Ethernet (PoE)
Understand the two ways in which power can be delivered using PoE
Understand the importance of planning to maximize the efficiency of Power over Ethernet

802.11 Analysis and Troubleshooting


Introduction to 802.11 Protocol Analysis
802.11 Data Frames
802.11 Control Frames
802.11 Management Frames
Frame Fragmentation
Power Saving operations
Transmission Rates

Coordinating 802.11 Frame Transmissions


Differences between CSMA/CD and CSMA/CA
Distributed Coordination Function (DCF)
Quality of Service in 802.11 WLANS

Antennas


Antenna characteristics and behaviors
Types of antennas commonly used with WLANs
Advanced antenna systems
Antenna placement and mounting
Antenna safety
Types of antenna cables, connectors, and accessories

RF Math and System Operating Margin


RF units of measure
Basic RF mathematics
RF signal measurements
Understand link budgets
Define and calculate System Operating Margin (SOM)

802.11 Service Sets


Explain three types of service sets defined for use within 802.11 WLANs
Roaming within a WLAN
Load-balancing as a method to improve congestion in WLANs

Wireless LAN Operation


Ad Hoc networks
Infrastructure networks
Bridged networks
Repeater networks
Mesh networks
WLAN switched networks
Enterprise Wireless Gateway networks
Enterprise Encryption Gateway networks
Virtual AP networks
Evolution of WLAN architectures
WLAN Management

WLAN Security


Security Policy and Procedures
Legacy 802.11 Security Components
802.11i Security Components
WPA-Personal
WPA-Enterprise
WPA2-Personal
WPA2-Enterprise
Baseline Security Practices (SOHO, SMB, Enterprise)

Site Surveying


Understanding the need for a site survey
Defining business requirements and justification
Facility analysis
Interviewing network management and users
Identifying bandwidth requirements
Determining contours of RF coverage
Documenting installation problems
Locating interference
Reporting methodology and procedures
Understanding specifics of each vertical market
Understanding the customer's network topology
Creating appropriate documentation during and after the site survey
Understanding safety hazards
Using appropriate hardware and software to perform the survey
Understanding the need for spectrum analysis
Manual RF site surveys
Predictive site surveys
Dense AP deployment