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Exam Code: 640-722
Exam Name: Implementing Cisco Unified Wireless Networking Essentials
Free One year updates to match real exam scenarios, 100% pass and refund Warranty.
640-722 Exam Cost Total Q&A: 272 Questions and Answers
Last Update: 06-07,2015

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NO.1 Which governing body analyzes the applications and environments in which wireless networks
are used?
A. EIRP
B. ETSI
C. FCC
D. IEEE
E. WiFi Alliance
Answer: D

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NO.2 A controller is connected to a Cisco Catalyst switch. The switch port configuration looks like
this:
interface GigabitEthernet 1 / 0/10
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,20,30,50
switchport trunk native vlan 20
switchport mode trunk
Which controller CLI command assigns its management interface to the native VLAN interface of the
Cisco Catalyst switch?
A. config interface vlan management 0
B. config interface vlan management 1
C. config interface vlan management 20
D. config interface vlan management 30
E. config interface vlan management 50
Answer: A

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Explanation:
Since the controller management interface is connected to the native vlan interface of the Cisco
Catalyst switch, the correct command is: config interface vlan management vlan-id 0
(http://www.cisco.com/en/US/docs/wireless/controller/ 5.0/configuration/guide/c5mint.html#wp11
82

NO.3 Which two items are needed to discover the IP address of a new Cisco Aironet 1260
autonomous AP that just finished booting? (Choose two.)
A. username = "cisco" and password = "cisco"
B. username = "Admin" and password = "Cisco"
C. username=Cisco and password=Cisco
D. show int vlan1
E. show int bvi1
F. show int gigabitethernet0
G. show int radio0-802.11n
H. show int radio1-802.11n
Answer: C,E

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9. Which statement correctly describes the procedure for a lightweight AP to successfully
establish a connection to a controller?
A. The AP authenticates the received Cisco WLC certificate as valid. The AP then sends its certificate
to the controller.
B. The AP sends its certificate to the controller. The AP then authenticates the received Cisco WLC
certificate as valid.
C. The AP sends its certificate to the RADIUS server. The AP then authenticates the controller
certificate as valid.
D. The AP sends its certificate to the RADIUS server. The AP then authenticates the RADIUS
certificate as valid.
E. The AP authenticates the received RADIUS server certificate as valid. The AP then sends its
certificate to the RADIUS server.
F. The AP authenticates the received RADIUS server certificate as valid. The AP then sends its
certificate to the controller.
Answer: B

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10. Which two statements about the requirements to configure inter-controller roaming are true?
(Choose two.)
A. The same mobility domain names are configured across controllers.
B. The same RF group names are configured across controllers.
C. The same controller hardware version is configured across controllers.
D. The same AP manager interface is configured across controllers.
E. The same virtual interface is configured across controllers.
F. The same controller software version is configured across controllers.
Answer: A,E

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11. Which two statements best describe the LAG configuration between a Cisco WLC and a Cisco
Catalyst switch? (Choose two.)
A. The Catalyst switch should be configured for PAgP .
B. The Catalyst switch should be configured only for Layer 2 load balancing.
C. The Catalyst switch should be configured for "on" mode.
D. The Cisco WLC relies on the connected switch to perform the load-balance of traffic.
E. The Cisco WLC aggregates multiple management interfaces into a single virtual interface.
Answer: C,D

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12. Which two Cisco Unified Wireless Network capabilities use information that is provided by
Radio Resource Management neighbor messages in version 7.0 MR1? (Choose two.)
A. aggressive load balancing
B. dynamic channel assignment
C. hybrid remote edge access point
D. inter-controller mobility (that is, mobility groups)
E. rogue AP classification
Answer: B,E

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13. The wireless network is using controller-based APs and version 7.0 MR1. The APs appear to
be connected properly to the controllers. A wireless user near one of the APs reports that they are
unable to connect to the network with their pre-shared key.
Which option shows the GUI path where you can check the connection status of that client?
A. WLANs > WLAN_ID > Advanced
B. Security > Clients
C. Security > Advanced > Clients
D. Monitor > Clients
E. Wireless > 802.11b/g/n > clients
Answer: D

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14. You are about to use a hotel's guest wireless services using a wireless laptop.
Which three items do you need to establish a wireless connection? (Choose three.)
A. SSID name
B. RF channel
C. RF signal
D. 802.1X/EAP credentials
E. pre-shared key
F. web page
G. WPA/WPA2 settings
Answer: A,C,F

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15. Refer to the exhibit.
Which three switch port types are valid for these connections? (Choose three.)
A. access
B. port-channel
C. port-channel trunk
D. trunk
E. port-channel access
F. routed port
Answer: A,C,D

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NO.4 Which statement about an infrastructure basic service set is true according to IEEE 802.11
specifications?
A. The set also is called an ad hoc network.
B. The BSSID is generated from the first wireless client that starts up in the IBSS.
C. The set enables the use of ESS.
D. No signals are relayed from one client to another client.
Answer: C

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NO.5 Which two statements about WiMAX technology are true? (Choose two.)
A. WiMAX is defined by 802.11i.
B. Typically, fixed WiMAX networks have a higher-gain directional antenna installed near the client.
C. WiMAX is capable of working as a long-range system over several miles.
D. WiMAX works only for licensed frequencies.
Answer: B,C

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NO.6 The IEEE 802.11n standard provides 40-MHz channels, improved MAC efficiency, and MIMO.
Which three elements define the 802.11n implementation of MIMO? (Choose three.)
A. channel bonding
B. dynamic frequency selection
C. maximal ratio combining
D. packet aggregation
E. spatial multiplexing
F. transmit beam forming
Answer: C,E,F

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NO.7 Which two factors must be considered when evaluating an RF interferer for severity? (Choose
two.)
A. distance from the AP
B. dBm
C. the type of security crack being used
D. duty cycle
E. number of interfering IP stations in the cell
F. duplicate SSID
Answer: B,D

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NO.8 Which description best describes upfade in a multipath environment?
A. In this situation, multiple signal paths are not sent at exactly the same time. The receiver receives
a positive crest on the primary signal and a negative crest on the secondary signal.
B. In this situation, the multiple signal paths are distorted and difficult to understand.
C. In this situation, the multiple signal paths are weaker than they should be because the signals are
out of phase with each other.
D. In this situation, the signal is stronger than it should be because multiple signal paths are
received twice at exactly the same time, which results in the multiple signals being in-phase.
Answer: D

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