What are the phases of association between mobile station and access point?
A mobile station must be in an authenticated and associated state before bridging will occur. The mobile station and AP will exchange a series of 802.11 management frames in order to get to an authenticated and associated state. A mobile station starts out as not authenticated and associated.
How does WiFi work step by step?
How does Wi-Fi work- firstly, a computer’s wireless adapter translates data into a radio signal and easily transmits it using an antenna. After that, a wireless router receives the signal and decodes it. The router is there also to send information to the internet using a wired Ethernet connection.
What is Association in wireless communication?
Association allows the AP/router to record each mobile device so that frames are properly delivered. Association only occurs on wireless infrastructure networks, not in peer-peer mode. A station can only associate with one AP/router at a time.
What are the five major components of securing the wireless 802.11 network?
Five Steps To WLAN Security — A Layered Approach
- Discovery and Mitigation of Rogue WLANs and Vulnerabilities.
- Lock Down All Access Points and Devices.
- Encryption and Authentication — VPN.
- Set and Enforce WLAN Policies.
- Intrusion Detection and Protection.
How many phases are there in WiFi connection establishment process?
Those three steps are device discovery (scanning), device authentication (checking compatibility-capability etc. before connection) and then finally establishment of connection (Association).
How does WiFi transmit data?
Wi-Fi uses radio waves to transmit information between your device and a router via frequencies. Two radio-wave frequencies can be used, depending on the amount of data being sent: 2.4 gigahertz and 5 gigahertz.
What are the three main security standards for 802.11 wireless networks?
This article presents a tutorial/discussion of three commonly-used IEEE 802.11 wireless network security standards: WEP, WPA and WPA2.
How many address fields exist in an 802.11 frame?
There are four address fields in the MAC frame format. These fields are used to indicate the basic service set identifier (BSSID), source address (SA), destination address (DA), transmitting STA address (TA), and receiving STA address (RA). Certain frames may not contain some of the address fields.
How many channels does the 802.11 b specify?
IEEE 802.11 Standards, Facts & Channels
|Standard||Maximum Data Rate (Mbps)||Maximum Non-Overlapping Channels (Americas)|
|802.11a||54||24 (20 MHz channels) 12 (40 MHz channels)|
|802.11n||600 (Theoretical Max)||*3|