Packet-switching wireless networks are preferable（41)when transmissions are（42)because of

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  A . Click the Connect to a network link， right-click the appropriate network， and then click the Connect option. B . Click the View computers and devices link， right-click the wireless router， and then click the Enable option. C . Click the Set up a connection or network link， and then click the Set up a wireless Ad hoc network option. D . Click the Set up a connection or network link， and then click the Manually connect to a wireless network option.

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• How can mobile devices and wireless networks be secured？（）

  A .  by securely deploying new applications with appropriate performance levels B .  by providing security that is based on a multilayer，system-level approach C .  by looking subjectively at network traffic for abnormal flows D .  by requiring a host-based hardware applicatio

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• You and a co-worker have established wireless communication directly between your wireless laptops. What type of wireless topology has been created?（）

  A . BSS B . ESS C . IBSS D . SSID

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• Healthcare providers are increasingly using wireless technologies to enable greater mobility for clinical staff. Which two wireless devices can be used in an integrated medical-grade network？ （）

  A .  handheld computers B .  imaging phone devices C .  media phones D .  tablet PC

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• Which two statements best describe enhanced wireless security encryption？（）

  A . TKIP protects RC4 encryption keys B . CKIP and TKIP protect AES encryption keys C . TKIP encryption is more processor intensive than AES encryption is D . WPA requires TKIP encryption， whereas WPA2 supports AES encryption E . WPA requires AES encryption， whereas WPA2 supports TKIP encryptio

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• Wi-Fi的全称为“Wireless Fidelity”，即（）。

  A . 有线隐藏技术 B . 无线相容性认证 C . 无线可靠性认证 D . 无线局域网技术

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• What is needed to allow IT managers to design， control， and monitor their wireless networks form a centralized location as wireless networks grow in scale and complexity？（）

  A .  network unification B .  network management C .  mobility platform D .  client device

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• The Cisco Unified Wireless Network minimizes the TCO and maximizes wireless network uptimeby optimizing which two deployment， management， and security features？（）

  A .  unified wireless and wired infrastructure for a single point of control for all WLAN traffic B .  simplified management of central or remotely located access points C .  extension features to wired network services， such as denial of service prevention and ACLs D .  threat defense with a robust wired IDS

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• Which wireless LAN statistics are reported from the Cisco Unified Wireless IP Phone 7921G via a directly connected web browser?（）

  A . duplicate sender packets B . unicast packet retry rate C . unicast packet retry ratio D . association rejectio

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• As the Company wireless administrator， you required to be knowledgeable about the wireless LAN  components.  Which two statements about these components are true？ （）

  A .  In the autonomous access point solution， control is provided by the WLAN controller. B .  In the lightweight access point solution， WLAN management is provided by the WLAN Control  System （WCS）. C .  In the autonomous access point solution， control is provided by the WDS （Wireless Domain  Services）. D .  Cisco Aironet autonomous access points cannot be supported by the Cisco Unified Wireless  Network. E .  Ii the lightweight access point solution， WLAN management is provided by the WLAN Solution  Engine （WLSE）. F .  Cisco Aironet lightweight access points cannot be supported by the Cisco Unified Wireless  Network.

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• Which two wireless security statements are true？（）

  A . A TACACS+ server is required to implement 802.1x. B . MIC protects against man-in-the-middle and replay attacks. C . The 802.1x standard provides encryption services for wireless clients. D . The AES （symmetric block cipher） is specified in the IEEE 802.11i specification. E . The IEEE 802.11i specification uses RC4 as its encryption mechanism. F . WPA requires TKIP and AES as encryption methods.

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• Which certification-based protocol is implemented for wireless QoS between an AP and a wireless client over RF media？（）

  A . WMM using DCF B . WMM using EDCAF C . 802.1e using DCF D . 802.1e using EDCAF

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• Which wireless LAN design ensures that a mobile wireless client will not lose connectivity when moving from one access point to another?（）

  A . using adapters and access points manufactured by the same company B . overlapping the wireless cell coverage by at least 10% C . configuring all access points to use the same channel D . utilizing MAC address filtering to allow the client MAC address to authenticate with the surrounding AP

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• Your computer has a wireless network adapter installed. However， the computer fails to connect to the wireless network.  You need to ensure that the computer is able to connect to the wireless network.  What should you do？（）

  A . Change the Network Category setting of the wireless connection to Public. B . Enable the Internet Connection Sharing feature on the wireless network adapter. C . Rename the wireless network adapter to match the Service Set Identifier （SSID） of the wireless network. D . Configure the wireless network adapter to connect to the appropriate wireless network from the Connect to a network list.

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• Which explanation describes a wireless client IGMP multicast join request using a Cisco Unified Wireless Network v5.2 architecture of AP to WLAN controller?（）

  A . passed by the AP to its connected switch and then forwarded directly to the connected router，which creates an MGID table entry B . passed by the AP to the WLAN controller and then forwarded to the source PIM-enabled router，which creates an MGID table entry C . passed by the AP to the WLAN controller， which creates an MGID table entry before forwarding to the directly connected PIM-enabled router D . passed by the AP to its connected switch and then forwarded to the rendezvous point router，which creates an MGID table entry

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• Which set of statements describes the correct order and process of a Company wireless user  client associating with a wireless access point in the Company network？ （）

  A .  1. Access point sends probe request .2. Client sends probe response.3. Client initiates  association.4. Access point accepts association.5. Client adds access point MAC address to  association table. B .  1. Client sends probe request.2. Access point sends probe response.3. Client initiates  association.4. Access point accepts association.5. Access point adds client MAC address to  association table. C .  1. Client sends probe request.2. Access point sends probe response.3. Access point initiates  association.4. Client accepts association.5. Access point adds client MAC address to association  table. D .  1. Access point sends probe request .2. Client sends probe response.3. Client initiates  association.4. Access point accepts association.5. Access point adds client MAC address to  association table. E .  1. Client sends probe request.2. Access point sends probe response.3. Client initiates  association.4. Access point accepts association.5. Client adds access point MAC address to  association table. F .  None of the other alternatives apply.

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• What will cause wireless voice devices to perform poorly？（）

  A . average signal strength that is greater than -67 dBi B . cell overlap of 15 to 20 percent C . uneven wireless coverage D . absence of coverage hole

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• Which three devices are used by the Cisco Wireless Control System （WCS） for wireless management？（）

  A . WLAN controllers B . WLAN Solution Engine （WLSE） C . Cisco Wireless Control System （WCS） D . Cisco Wireless Location Appliance E . lightweight access point （AP） F . autonomous access point （AP）

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• What are two features of WCS wireless management？ （）

  A .  centralized management for autonomous access points B .  centralized management for lightweight access points C .  integration with the Location Appliance to expand real time tracking to 1500 devices for 30 days D .  integration with the Location Appliance to expand real time tracking to 2500 devices for 15 days E .  the inclusion of an integrated AAA server F .  an external AAA-server requirement

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• Your wireless network is not listed in the Connect to a network window of your computer. You need to connect to your wireless network.  Which two actions should you perform？（）

  A . Right-click and click the Diagnose option in the Connect to a network window. B . Set the security type value to No authentication in the wireless network properties dialog box. C . Click the Manually connect to a wireless network option in the Set up a connection or network window. D . In the Wireless Network properties dialog box， click the Connect even if the network is not broadcasting option. E . Configure the correct IP address， subnet mask， and default gateway for the target network in the wireless network connection properties dialog box.

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• Wireless networks need more protection.

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• Packet-switching wireless networks are preferable（66)when transmissions are（67)bemuse of t

  Packet-switching wireless networks are preferable(66)when transmissions are(67)bemuse of the way charges are(68)per packet. Circuit-switched networks are preferable for transferring large files or for other lengthy transmissions because customers are(69)for the(70)of time they use the network. A．to B．for C．than D．only

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• Your wireless network is not listed in the Connect to a network window of your computer. You need to connect to your wireless network.Which two actions should you perform？（）

  <img src='https://img2.soutiyun.com/ask/uploadfile/2019-03-27/89516ba86f46455345fbbdb75d510af3.jpg' /> A．A B．B C．C D．D E．E

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• What do wireless networks deliver to mobile devices？

  A．real-time information B．delayed information

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