Wireless Questions

Question 1 An engineer must configure a WLAN using the strongest encryption type for WPA2-PSK. Which cipher fulfills the configuration requirement? A. WEP B. RC4 C. AES D. TKIP

: C Explanation Many routers provide WPA2-PSK (TKIP), WPA2-PSK (AES), and WPA2-PSK (TKIP/AES) as options. TKIP is actually an older encryption protocol introduced with WPA to replace the very-insecure WEP encryption at the time. TKIP is actually quite similar to WEP encryption. TKIP is no longer considered secure, and is now deprecated. In other words, you shouldn't be using it. AES is a more secure encryption protocol introduced with WPA2 and it is currently the strongest encryption type for WPA2-PSK. Q

Question 10 Which 802.11 frame type is association response? A. management B. protected frame C. control D. action

A Explanation There are three main types of 802.11 frames: the Data Frame, the Management Frame and the Control Frame. Association Response belongs to Management Frame. Association response is sent in response to an association request.

Question 9 Which feature on the Cisco Wireless LAN Controller when enabled restricts management access from specific networks? A. CPU ACL B. TACACS C. Flex ACL D. RADIUS

A Explanation Whenever you want to control which devices can talk to the main CPU, a CPU ACL is used. Note: CPU ACLs only filter traffic towards the CPU, and not any traffic exiting or generated by the CPU.

Question 13 Several new coverage cells are required to improve the Wi-Fi network of an organization. Which two standard designs are recommended? (Choose two) A. 5GHz provides increased network capacity with up to 23 nonoverlapping channels, B. 5GHz channel selection requires an autonomous access point. C. Cells that overlap one another are configured to use nonoverlapping channels. D. Adjacent cells with overlapping channels use a repeater access point. E. For maximum throughput, the WLC is configured to dynamically set adjacent access points to the same channel.

A C Explanation The 802.11 standard defines 23 20MHz wide channels in the 5 GHz spectrum. Each channel is spaced 20MHz apart and separated into three Unlicensed National Information Infrastructure (UNII) bands.

Question 11 When configuring a WLAN with WPA2 PSK in the Cisco Wireless LAN Controller GUI, which two formats are available to select? (Choose two) A. ASCII B. base64 C. binary D. decimal E. hexadecimal

A E Explanation When configuring a WLAN with WPA2 Preshared Key (PSK), we can choose the encryption key format as either ASCII or HEX.

Question 6 Which mode allows access points to be managed by Cisco Wireless LAN Controllers? A. autonomous B. lightweight C. bridge D. mobility express

B Explanation A Lightweight Access Point (LAP) is an AP that is designed to be connected to a wireless LAN (WLAN) controller (WLC). APs are "lightweight," which means that they cannot act independently of a wireless LAN controller (WLC). The WLC manages the AP configurations and firmware. The APs are "zero touch" deployed, and individual configuration of APs is not necessary.

Question 3 Which QoS Profile is selected in the GUI when configuring a voice over WLAN deployment? A. Bronze B. Platinum C. Silver D. Gold

B Explanation Cisco Unified Wireless Network solution WLANs support four levels of QoS: Platinum/Voice, Gold/Video, Silver/Best Effort (default), and Bronze/Background.

Question 4 What is a design element when deploying an 802.11b wireless infrastructure? A. disabling TPC so that access points can negotiate signal levels with their attached wireless devices. B. setting the maximum data rate to 54 Mbps on the Cisco Wireless LAN Controller C. allocating non overlapping channels to access points that are in close physical proximity to one another D. configuring access points to provide clients with a maximum of 5 Mbps

C

Question 2 Which unified access point mode continues to serve wireless clients after losing connectivity to the Cisco Wireless LAN Controller? A. sniffer B. mesh C. flex connect D. local

C Explanation In previous releases, whenever a FlexConnect access point disassociates from a controller, it moves to the standalone mode. The clients that are centrally switched are disassociated. However, the FlexConnect access point continues to serve locally switched clients. When the FlexConnect access point rejoins the controller (or a standby controller), all clients are disconnected and are authenticated again. This functionality has been enhanced and the connection between the clients and the FlexConnect access points are maintained intact and the clients experience seamless connectivity. When both the access point and the controller have the same configuration, the connection between the clients and APs is maintained.

Question 12 What is a benefit of using a Cisco Wireless LAN Controller? A. Central AP management requires more complex configurations B. Unique SSIDs cannot use the same authentication method C. It supports autonomous and lightweight APs D. It eliminates the need to configure each access point individually

D

Question 5 Which statement about Link Aggregation when implemented on a Cisco Wireless LAN Controller is true? A. To pass client traffic two or more ports must be configured B. The EtherChannel must be configured in "mode active" C. When enabled the WLC bandwidth drops to 500 Mbps D. One functional physical port is needed to pass client traffic

D Explanation Link aggregation (LAG) is a partial implementation of the 802.3ad port aggregation standard. It bundles all of the controller's distribution system ports into a single 802.3ad port channel. Restriction for Link aggregation: + LAG requires the EtherChannel to be configured for 'mode on' on both the controller and the Catalyst switch -> Answer B is not correct.+ If the recommended load-balancing method cannot be configured on the Catalyst switch, then configure the LAG connection as a single member link or disable LAG on the controller -> Answer A is not correct while answer D is correct.

Question 7 Which type of wireless encryption is used for WPA2 in pre-shared key mode? A. TKIP with RC4 B. RC4 C. AES-128 D. AES-256

D Explanation We can see in this picture we have to type 64 hexadecimal characters (256 bit) for the WPA2 passphrase so we can deduce the encryption is AES-256, not AES-128.

Question 8 Which two values or settings must be entered when configuring a new WLAN in the Cisco Wireless LAN Controller GUI? (Choose two) A. management interface settings B. QoS settings C. ip address of one or more access points D. SSIDE. Profile name

D E