Network Architecture Model What are the layers of the Network Architecture Model? – Core – Distribution – Access
Network Architecture Model Where is 802.11 deployed in the network architecture model? – 802.11 technology is in the ACCESS layer
Network Architecture Model An 802.11 device in Bridge set up falls within what network architecture layer? – Distribution
Organizations What organization controls 802.11? – IEEE Who control the maximum transmit power for unlicensed Wi-Fi? – Local authorities such as CRTC, FCC, provincial regulators What organization ensures Wi-Fi interoperability? – Wi-Fi Alliance Where is the IEEE 802.11 specification in the OSI model? – PHY layer and DL layer (One and two)
Network Architecture Model Where does the IEEE 802.11-2007 standard defines communication mechanisms (layer and sub-layer)? – Only the Physical layer and MAC sub-layer of the Data- Link layer of the OSI model. – The Logical Link Control (LLC) sub-layer of the Data- Link layer is not defined by the 802.11-2007 standard. – WPA is a security certification. – FSK is a modulation method.
Organizations What is the organization responsible for RFC documents? – The IETF is responsible for creation of RFC documents. What is the organization responsible for 802 documents? – The IEEE is responsible for the 802 standards. What is the organization responsible for certification tests? – The Wi-Fi Alliance is responsible for certification tests. The Wi-Fi Alliance used to be known as WECA, but changed their name to Wi-Fi Alliance in 2002. What is the organization responsible for RF regulations? – The FCC is responsible for RF regulatory rules in the United States.
Wi-Fi Alliance What is the certification program that deal with QoS or quality of service? – Wi-Fi Multimedia (WMM) is a Wi-Fi Alliance certification program that enables Wi-Fi networks to prioritize traffic generated by different applications. – NOT ANSWERS: – 802.11-2007 is the IEEE standard, and WEP (Wired Equivalent Privacy) is defined as part of the IEEE 802.11- 2007 standard. – 802.11i was the IEEE amendment that defined robust security network (RSN) and is not part of the 802.11-2007 standard. – PSK is not a standard; it is an encoding technique.
Wi-Fi Alliance What is the Wi-Fi method to allow easy interconnection between wireless devices? – Wi-Fi Direct is designed to provide easy setup for communications directly between wireless devices. – Wi-Fi Personal does not exist. – 802.11n will likely provide connectivity, but setup could be easy or difficult depending on the environment. – CWG-RF is designed for Wi-Fi and cellular radios in a converged handset. Wi-Fi Protected Setup is designed to simplify security setup.
Wi-Fi Alliance What is the main objective of the Wi-Fi Alliance? – The Wi-Fi Alliance maintains certification programs to ensure vendor interoperability. What is the certification program for voice over Wi-Fi? – Voice Personal is a certification program that defines enhanced support for voice applications in residential and small-business Wi-Fi networks. What is the certification program that defines battery saving methods? – WMM-PS is a certification program that defines methods to conserve battery power for devices using Wi-Fi radios by managing the time the client device spends in sleep mode.
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