Exam 2: Wireless Local Area Networks

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Describe the difference between directed transmission and diffused transmission with respect to infrared transmissions.

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A directed transmission requires that the emitter and detector be directly aimed at one another in a line of sight (LoS) path. A diffused transmission relies on reflected light. The emitters on diffused transmissions have a wide-focused beam instead of a narrow beam and are pointed at the room's ceiling, which serves as the reflection point.

Windows Vista and Windows 7 use which software for configuring wireless NICs?

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Describe the Microsoft Windows 7 feature referred to as the wireless Hosted Network.

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This feature has two parts: the virtualization of the physical wireless NIC into multiple virtual wireless NICs (called Virtual WiFi) and a software-based wireless access point (SoftAP) that uses a designated virtual wireless NIC. The wireless Hosted Network allows users to extend the functionality of their portable laptop computer. For example, a user could set up her computer to create a wireless network so that other users can quickly share documents wirelessly between multiple computers.Another function allows a laptop's network connection to be shared by other computers and devices. For example, a user could connect her computer to the Internet and then turn her computer into an AP that shares the Internet connection with other wireless laptop devices, much like a hardware AP.

List the four modes in which a wireless bridge can function.

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List and describe three advantages of standards for wireless technology.

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Which of the following are advantages of having standards govern how a technology works? (Choose all that apply.)

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If a remote wireless bridge is set to ____,it can only transmit to another bridge in root mode.

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A(n)________________ is a device that receives a signal from an emitter.

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Which IEEE standard added speeds of 5.5 and 11 Mbps to the WLAN standards?

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Which of the following is true about infrared transmissions?

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Which of the following is true of the CardBus form factor?

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Wireless NICs perform the same function as a wired NIC except for which of the following?

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Which type of remote wireless bridge connection is used to connect multiple LAN segments,or buildings together?

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A remote wireless bridges support two types of connections.Describe them.

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Which of the following are improvements of the 802.11n standard over previous 802.11 standards? (Choose all that apply.)

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Which of the following provides the management and configuration functions for a thin access point?

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List and describe the two terms used for measuring wireless network speeds.

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List the three sources of standards.

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WLANs are based on de jure standards.

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De facto standards are official standards.

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