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CWNA (Certified Wireless Network Associate)
Posted Date:
28 Jan 2009
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Posted By: Saranya
Member Level: Diamond
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CWNA (Certified Wireless Network Associate)
Radio Frequency (RF) Fundamentals
RF behavior and properties
Principles of antennas
RF math calculations
Link budgets and system operating margins
Spread Spectrum Technologies
Uses of Spread Spectrum
Frequency Hopping (FHSS)
Direct Sequencing (DSSS)
Orthogonal Frequency Division Multiplexing (OFDM)
Packet Binary Convolutional Coding (PBCC)
Comparing DSSS, FHSS, PBCC, and OFDM
Co-location and throughput analysis
Chipping code, processing gain, & spreading functions, Channels, data rates, ranges, and comparisons
Channel reuse in pure and mixed environments
Hardware Installation, Configuration, and Management
Access points, Wireless bridges
Wireless workgroup bridges
Client devices and accessories
Residential & Enterprise gateways
Wireless LAN switches
PoE Switches and patch panels
VoWiFi systems, Wireless Routers
Troubleshooting Wireless LANs
Multipath, Hidden node, Near/Far
Identifying and resolving interference problems,
Maximizing system throughput
Maximizing co-location throughput
Range considerations
Antennas and Accessories
Omni-directional, Semi-directional
Highly-directional
Determining coverage areas
Proper mounting and safety
Performing outdoor/indoor installations
Power over Ethernet (802.3af and proprietary implementations)
Cables & connector usage requirements
Amplifiers, attenuators, lightning arrestors, and splitters, Fresnel Zones and Free Space Path Loss, Interference, Fading, & Multipath.
Wireless Network Management
AAA functions
Bandwidth control
Wireless Network Management features and products
Physical and MAC Layers
Differences between wireless and Ethernet frames
Collision handling & the use of RTS/CTS
Throughput and dynamic rate selection
Analysis of DCF mode and the CSMA/CA protocol, How frame fragmentation works & its affects on throughput
Wireless LAN Security
Analysis of 802.11 security including WEP, WPA, 802.1x/EAP types, & 802.11i
Security solutions at Layer2, 3, & 7
Types of network attacks, & protecting the network from attacks
Corporate security policies including baseline practices, & common security solutions, Security recommendations
Organizations and Standards
FCC rules
Frequency ranges and channels
IEEE 802.11 family of standards
Wireless LAN organizations
Proper application of WLANs in distribution and access roles
Interoperability standards
802.11 Network Architecture
Joining a wireless LAN
Authentication & association
Basic & Extended Service Sets
Independent Basic Service Sets
Distribution systems
Roaming in a wireless LAN
Scanning modes using Beacons & Probe Frames, Power management features
Site Surveying
Understanding the need for a site survey
Defining business requirements & justification, Facility analysis
Interviewing network management & users, Identifying bandwidth requirements, Determining contours of RF coverage, Documenting
installation problems, Locating interference, Reporting methodology & procedures
Understanding specifics of each vertical market, Understanding the customer's network topology, Creating appropriate documentation during & after the site survey, Understanding FCC/FAA rules regarding towers, Understanding safety hazards, Using appropriate hardware & software to perform the survey
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