Case Study: WMM Devices Wi-Fi Multimedia (WMM) technology can now be found in te
ID: 3916737 • Letter: C
Question
Case Study: WMM Devices
Wi-Fi Multimedia (WMM) technology can now be found in televisions, cameras, and other devices to create a wireless infrastructure for home entertainment networks. Use the Internet to research WMM technology in these devices.
Case Study: HCCA
HCF Controlled Channel Access (HCCA) uses polling along with centralized scheduling controlled by the AP. Use the Internet to research HCCA. How does it function? What are its strengths and limitations? Why is it preferable over other forms of QoS? Write a one-page paper about your research.
Case Study: Captive Portal APs
Captive Portal APs are very commonly found in a variety of settings. Use the Internet to research Captive Portal APs. How are they typically used? What are their security vulnerabilities? What open source products are available?
Writing Requirements
Explanation / Answer
Answer)
HCCA : This helps to provide the pooling based medium access which also provides a hybrid coordinator in the contention period for assigning the contention free time.
HCCA cannot accept the model with out vacation period or time bound services.
QoS :
This is otherwise known as the Quality of Service. This helps to create a equal distribution of resources. This checks for many such traffics in the network and prioritises the sequence as per the need.
The different forms of QoS are as follows:
Traditional QoS : This would need to assign the priority to a specific application with the application by the help of IP or the MAC address.
Intelligent QoS : This helps in qutomating the QoS proocess
Captive Portal APs :
This is a web page which is shows the newly connected users . This is mostly used to present a login page with the help of authentication, payment or accepted user policies.
The use is as follows:
It gets stored either in the gateway or web server hosting and is presented to the client.
These implementations would need the SSL encrypted login page post which the IP as well as MAC addresses are passed on.
They interfere with the wireless security and the privacy. They interrupt and alter the HTTP connections among the user as well as website and can lead to someone hacking thw website.
Some of products are as follows:
Chillispot, wifidog, packetfence, coovachilli, utangle, pfsense, peppershot etc
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