Wireless Network Fundamentals by Arash Deljoo
Learn about wireless LANs and their applications in this comprehensive course. Ideal for network and wireless engineers. Boost your skills today!
What you’ll learn
- Comparing Wired and Wireless Networks
- Understanding Basic Wireless Theory
- Carrying Data Over an RF Signal
- Regulatory Bodies
- IEEE Standards Body
- IEEE 802.11 Channel Use
- IEEE 802.11 Standards
- Wi-Fi Alliance
- Interference
- Free Space Path Loss
- Effects of Physical Objects
- Antenna Characteristics
- Antenna Types
- Antenna Accessories
- Types of Wireless Networks
- Wireless LAN Topologies
- Other Wireless Topologies
- IEEE 802.11 Frame Types and Addressing
- Accessing the Wireless Medium
- IEEE 802.11 Frame Types
- Client Housekeeping
- AP Cell Size
- Adding APs to an ESS
- Designing and Validating Coverage with Site Surveys
- Cisco Wireless Architectures
- Cisco Wireless Network Building Blocks
- Implementing Autonomous AP
- Implementing Cloud-Based AP
- Connecting a Centralized Controller
- Understanding Controller Discovery
- Designing High Availability
- Roaming Overview
- Roaming Between Centralized Controllers
- Roaming Between Converged Controllers
- Anatomy of a Secure Connection
- Wireless Client Authentication Methods
- Wireless Privacy and Integrity Methods
- WPA and WPA2
- Securing Management Frames with MFP
- Locating Devices in a Wireless Network
- Troubleshooting Client Connectivity
- Troubleshooting AP Connectivity
- Checking the RF Environment
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A wireless LAN (WLAN) is a wireless computer network that links two or more devices using wireless communication to form a local area network (LAN) within a limited area such as a home, school, computer laboratory, campus, or office building. This gives users the ability to move around within the area and remain connected to the network. Through a gateway, a WLAN can also provide a connection to the wider Internet.
Wireless LANs based on the IEEE 802.11 standards are the most widely used computer networks in the world. These are commonly called Wi-Fi, which is a trademark belonging to the Wi-Fi Alliance. They are used for home and small office networks that link together laptop computers, printers, smartphones, Web TVs and gaming devices with a wireless router, which links them to the internet. Hotspots provided by routers at restaurants, coffee shops, hotels, libraries, and airports allow consumers to access the internet with portable wireless devices.
The IEEE 802.11 has two basic modes of operation: infrastructure and ad hoc mode. In ad hoc mode, mobile units communicate directly peer-to-peer. In infrastructure mode, mobile units communicate through a wireless access point (WAP) that also serves as a bridge to other networks such as a local area network or the Internet.
Since wireless communication uses a more open medium for communication in comparison to wired LANs, the 802.11 designers also included encryption mechanisms: Wired Equivalent Privacy (WEP), no longer considered secure, Wi-Fi Protected Access (WPA, WPA2, WPA3), to secure wireless computer networks. Many access points will also offer Wi-Fi Protected Setup, a quick, but no longer considered secure, method of joining a new device to an encrypted network.
Who this course is for:
- Network Engineers , Wireless Engineers
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