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CH1 CWNA

CH1 CWNA. Certification Questions. 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.

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CH1 CWNA

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  1. CH1 CWNA Certification Questions

  2. Network Architecture Model • What are the layers of the Network Architecture Model? • Core • Distribution • Access

  3. Network Architecture Model • Where is 802.11 deployed in the network architecture model? • 802.11 technology is in the ACCESS layer

  4. Network Architecture Model • An 802.11 device in Bridge set up falls within what network architecture layer? • Distribution

  5. 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)

  6. 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.

  7. 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.

  8. 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.

  9. 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.

  10. 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-PSis 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.

  11. Wi-Fi Alliance

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