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Which of the following desdription is WRONG .about Wi-Fi? ( ).
A.Any standard Wi~Fi device. will work anywhere in the world with global operative set of standaeds
B.Now most laptops are built with wireless network adapters inside
C.One can connect Wi-Fi devices in ad-hoc mode for client-to-client connections without a router
D.Communications between two devices need the involvement of an access point with Wi-Fi
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更多 “ Which of the following desdription is WRONG .about Wi-Fi? ( ).A.Any standard Wi~Fi device. will work anywhere in the world with global operative set of standaedsB.Now most laptops are built with wireless network adapters insideC.One can connect Wi-Fi devices in ad-hoc mode for client-to-client connections without a routerD.Communications between two devices need the involvement of an access point with Wi-Fi ” 相关考题
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Which IEEE standard is used to define Wi－Fi?()
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Which of the following description is WRONG about Wi-Fi? ( ).A.Any standard Wi-Fi device.will work anywhere in the world with global operative set of standards
B.Now most laptops are built with wireless network adapters inside
C.One can connect Wi-Fi devices in ad-hoc mode for client-to-client connections without a router
D.Communications between two devices need the involvement of an access point with Wi-Fi
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Wi-Fi联盟制定的安全认证方案WPA（Wi-Fi Protected Access）是 （ ） 标准的子集。A.IEEE 802.11
B.IEEE 802.11a
C.IEEE 802.11b
D.IEEE 802.11i
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Wi-Fi是一种可以将个人电脑、手持设备（如PDA、手机）等终端以无线方式互相连接的网络技术。以下表述正确的是（）。A、使用Wi-Fi技术上网不需要付费B、Wi-Fi技术给人们带来了更为便捷的上网方式C、使用Wi-Fi技术的唯一优点是上网速度快D、Wi-Fi是唯一的无线连接技术
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Which two statements are true about the Wi-Fi Protected Access （WPA） and Wi-Fi Protected Access version 2 （WPA2） security solutions？（）A、both WPA and WPA2 require authentication support via IEEE 802.1 x and Pre-Shared Key （PSK）B、both WPA and WPA2 address all known Wired Equivalent Privacy （WEP） vulnerabilities in the IEEE 802.11i security implementationC、WPA is supported on client devices only. WPA2 is supported on both access point （AP） and client devicesD、WPA provides only a standard for authentication. WPA2 provides a standard for authentication and encryptionE、WPA requires encryption support via Temporal Key Integrity Protocol （TKIP） WPA2 provides encryption support via （symmetric block cipher）AES-CCMP
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下列对于SYNC 3的相关操作之“Wi-Fi设置”的描述正确的是（）。A、对Wi-Fi的打开和关闭只需滑动即可操作B、Wi-Fi热点的信号强度、接入网速、接入数量都会对连接速度造成影响C、可用网络中可以选择附近的热点进行网络连接D、SYNC 3的Wi-Fi可作为热点供其它设备进行网络连接
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下列关于Wi-Fi的叙述，错误的是（）A、Wi-Fi是一种能够将个人电脑、手持设备等终端以无线方式互相连接的技术B、Wi-Fi是有线网的补充和延伸C、Wi-Fi信号就是移动通讯信号D、Wi-Fi泛指符合IEEE 802.11标准的无线网络
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Which two statements about the implementation of WLAN QoS are true？（）A、The 802.11e standard is the IEEE 802.11 OoS WLAN standard.B、The Wi-Fi Multimedia （WMM） standard decreases the eight priority levels to four access categories.C、The Wi-Fi Multimedia （WMM） standard is a Wi-Fi Alliance standard that increases the four priority levels to eight access categories.D、The Wi-Fi Multimedia （WMM） standard is an IEEE standard that increases the four priority levels to eight access categories.E、Wireless 802.11 deploys Distributed Coordination Function （DCF）， carrier sense multiple access with collision detection （CSMA/CD）， interframe spacing， and random wait timers to avoid collisions.F、Wireless OoS designs and implementations commonly use Layer 3 differentiated services code point （DSCP） or Layer 2 802.1 p to ensure priority
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Which IEEE standard is used to define Wi-Fi?（）A、IEEE 802.3B、IEEE 802.5C、IEEE 802.11hD、IEEE 802.11cE、IEEE 802.11
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Which two statements about the Wi-Fi Multimedia （WMM） standard are true？（）A、 Lower-priority traffic is assigned short interframe wait-timers to allow higher-priority traffic access to the wireless network first.B、 Packets that are not assigned to a specific access category are categorized by default as the background access category.C、 The WMM standard was implemented after the 802.11e standard was approved to provide support for non 802.11e devices.D、 WMM is a Wi-Fi Alliance standard that was implemented before the 802.11e standard was approved.E、 WMM uses Enhanced DCF （EDCF） to stipulate fixed and random wait times for the different access classes.
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Which statement best describes the Cisco 2700 Location Appliance collection of location information for wireless devices?（）A、all Wi-Fi devices on the WLAN send directly received signal strength indication （RSSI） information to the Cisco Wireless Location Appliance through SNMPB、an AP collects RSSI information which is forwarded to wireless controllers through LWAPP. Wireless controllers forward aggregated RSSI to the location appliance through SNMPC、the APs collect received signal strength indication （RSSI） information from all Wi-Fi devices and forward the information to the Cisco Wireless Location Appliance through the LWAPPD、the Cisco WLAN controllers bypass the received signal strength indication （RSSI） information from all Wi-Fi devices to the Cisco Wireless Location Appliance through the LWAPP
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Which of the following wireless security techniques is the MOST secure?（）A、Enable Wired Equivalent PrivacyB、Disable SSID broadcastC、Enable Wi-Fi Protected AccessD、Enable MAC filtering
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多选题Which two statements are true about the Wi-Fi Protected Access （WPA） and Wi-Fi Protected Access version 2 （WPA2） security solutions？（）Aboth WPA and WPA2 require authentication support via IEEE 802.1 x and Pre-Shared Key （PSK）Bboth WPA and WPA2 address all known Wired Equivalent Privacy （WEP） vulnerabilities in the IEEE 802.11i security implementationCWPA is supported on client devices only. WPA2 is supported on both access point （AP） and client devicesDWPA provides only a standard for authentication. WPA2 provides a standard for authentication and encryptionEWPA requires encryption support via Temporal Key Integrity Protocol （TKIP） WPA2 provides encryption support via （symmetric block cipher）AES-CCMP
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单选题Which IEEE standard is used to define Wi-Fi?（）A
IEEE 802.3B
IEEE 802.5C
IEEE 802.11hD
IEEE 802.11cE
IEEE 802.11
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问答题什么是Wi-Fi技术？
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