Overview

This unique course provides a technical grounding in 802.11 / Wi-Fi networks, including 802.11 / Wi-Fi standards and amendments, 802.11 protocol operation, equipment configuration, installation and testing; RF Channels, RF spectrum analysis, and an overview of Wi-F Site Survey. The course helps attendees prepare for the Certitrek Certified Wireless Technician (CWT) and Certified Wireless Specialist (CWS) on-line certification exams.

Duration

2 days

Audience

  • Wi-Fi sales professionals or marketing personnel.
  • Level 1 and Level 2 IT support staff supporting Wi-Fi network users.
  • Installers of Wi-Fi access points and other wireless products.
  • Project managers responsible for wireless network deployments.
  • People wanting to take the Certitrek Certified Wireless Specialist (CWS) and/or Certified Wireless Technician (CWT) on-line certification exams.

Prerequisites

Students should have a basic knowledge of Ethernet networks.

Objectives

Understand 802.11 / Wi-Fi terminology
Understand Wi-Fi equipment and its primary functions
Understand the configuration process for SSIDs, security settings and other client adapter settings
Properly configure and install Wi-Fi access points
Configure a WLAN client for connectivity
Understand essential aspects of outdoor wireless networks
Gather information from a design specification document
Specify Wi-Fi site survey requirements
Troubleshoot basic Wi-Fi connection problems and help users regain network connectivity
Prepare for the Certitrek Certified Wireless Technician (CWT) and Certified Wireless Specialist (CWS) on-line certification exams.

Content Headings

Introduction to Networking
Understanding Network Models
Understanding Protocols
SDU
PDU
OSI – The de facto Reference Model
The seven layer model
Equipment per layer
Mapping other protocols into the OSI model
TCP/IP – four layer model

Wi-Fi Organisations and Standards
Regulatory Bodies
IEEE
Wi-Fi Alliance
WLAN Connectivity
WLAN Security
WLAN QoS and Power-Save
IEEE 802.11 Standards,
Amendments, and Drafts
802.11-2016
Wi-Fi 6
802.11a/b/g/n/ac/ax
802.11e/h/i/j/k/r/s/u/v/w
Hotspot 2.0

Wi-Fi Hardware and Software
Access Points
Lightweight
Autonomous
WLAN Routers
WLAN Bridges
WLAN Repeaters
WLAN Controllers/Switches
Direct-connect APs
Distributed-connect APs
PoE Infrastructure
Midspan
Endpoint
Client hardware and software
Antenna types and uses

Radio Frequency (RF) Fundamentals
Units of RF measurements
Factors affecting network range and speed
Environment
Line-of-sight
Interference

Spread Spectrum Concepts
OFDM and HR/DSSS channels
Co-location of HR/DSSS and OFDM systems
Adjacent-channel and co-channel interference
WLAN / WPAN co-existence
CSMA/CA operation half duplex
Defining differences between physical layers
MIMO

RF Antenna Concepts
Passive gain
Beam widths
Simple diversity
Polarisation
Antenna Mounting
Pole/mast mount
Ceiling mount
Wall mount
WLAN Accessories
RF cables
RF connectors
Lightning arrestors and grounding rods

Wi-Fi Site Surveying
Information gathering and reporting
Multiple Channel Architecture (MCA) cell planning basics
Single Channel Architecture (SCA) cell planning basics
Predictive Site Survey
Manual Site Survey
Passive Survey
Active Survey
Mesh Access Layers
Use of Analysers:
– Spectrum Analysers
– Protocol Analysers
– Site Survey tools
Identifying and locating RF interference sources
Wi-Fi versus Non-Wi-Fi interference
Hardware placement limitations
Best practices for antenna use

Wi-Fi Operational Concepts
Range, Coverage, Capacity
Frequencies/channels used
Channel reuse and co-location
Active and passive scanning
Power saving operation
Data rates and throughput
Dynamic rate selection
Authentication and association
The distribution system and roaming
Infrastructure and ad hoc modes
BSSID and ESSID
Protection mechanisms

Applications, Support, and Troubleshooting
Installation/configuration of common network types
Small Office / Home Office (SOHO)
Extension of existing networks into remote locations
Building-to-building connectivity
Public wireless hotspots
Mobile office, classroom, industrial, and healthcare
Corporate data access and end-user mobility
Last-mile data delivery (WISP)
Transportation networks

Wi-Fi Security and Compliance
802.11 Legacy Security Methods (including WEP)
Encryption – TKIP, CCMP/AES
Authentication Passphrases and 802.1X/EAP
WPAv1 versus WPA2
WPA-Personal
WPA-Enterprise
WPS Pushbutton / PIN
Role-Based Access Control (RBAC)
VPN Security
Wireless Intrusion
Protection Systems (WIPS)
PCI Compliance
HIPAA Compliance
Enforcing Compliance

Recognising and troubleshooting wireless network problems
Decreased throughput
Intermittent or no connectivity
Weak signal strength
Device upgrades
Wi-Fi Network Optimisation Procedures
Infrastructure hardware selection and placement
Identifying, locating, and removing sources of interference
Client load-balancing
Analysing infrastructure capacity and utilisation
Multipath and hidden nodes

Classroom Demonstrations
AP/Client Connectivity with WPA2-Personal Security and PoE Power
Spectrum Analysis of RF Environment
Protocol Analysis of RF Environment
Configuring an Autonomous AP
Configuring a Controller-based wireless network
Configuring “controller-less” systems