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Code d'Examen: 642-631
Nom d'Examen: Cisco (Advanced Wireless LAN for Field Engineers)
Questions et réponses: 222 Q&As
642-631 Démo gratuit à télécharger: http://www.pass4test.fr/642-631.html
NO.1 You are charged with implementing a secure wireless installation which will provide Internet access to
client devices but will not allow communications between wireless clients. In addition to implementing
PSPF or peer-to-peer blocking on the wireless side, which of the following actions should you perform on
the wired infrastructure?
A. Implement a Cisco Secure IPS sensor.
B. Implement 802.1X on the switch ports.
C. Take no action, you have achieved your goal.
D. Implement a protected port on the access switches.
Answer: D
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NO.2 On a Cisco Aironet 1240AG Series standalone access point, the radio LED is dark blue and blinking,but
the status LED and Ethernet LED are both off. What does this indicate.?
A. A firmware upgrade is in progress.
B. An access point buffer overflow is occurring.
C. The access point is booting.
D. The internal radio has failed.
Answer: A
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NO.3 Choose the service component in the optimize phase which assesses the WLAN system and drives
continuous improvements by recommending remediation measures including device configuration
optimization, capacity planning, traffic analysis, security assessment, and quality issue resolution.
A. Technology Assessment
B. Operations Assessment
C. Security Assessment
D. Security Administration
E. Change Management
F. Operations Readiness Assessment
Answer: A
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NO.4 Which command will enable DHCP debugging on a WLAN controller?
A. debug dhcp enable
B. debug dhcp packet enable
C. enable debug dhcp packet
D. debug dhcp status enable
Answer: B
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NO.5 When configuring a WLAN controller for a voice application using Cisco 7920 wireless IP phones,
which
two general control settings should you select? (Choose two.)
A. Multicast on
B. Aggressive Load Balancing off
C. Multicast off
D. AP Fallback on
E. Aggressive Load Balancing on
F. AP Fallback off
Answer: BC
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NO.6 By default, on the WLAN controller for a voice application using Cisco 7921 wireless IP phones, what
is the percentage of RF bandwidth that can be dedicated to the phones?
A. 75 percent
B. 85 percent
C. 56 percent
D. 55 percent
Answer: A
Cisco 642-631 examen 642-631
NO.7 Which parameter, when enabled on a standalone access point, gives the highest priority to a voice
packet even when QoS is not enabled?
A. IGMP Snooping
B. WMM
C. QoS Element for Wireless Phones
D. AVVID Priority Mapping
Answer: C
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NO.8 You are installing a Cisco 4402 Series Wireless LAN Controller. Which type of interface should you use
on the controller's distribution port?
A. 1000BASE-SX SFP
B. 10/100/1000 Mbps RJ45
C. 10/100 Mbps RJ45
D. 10000BASE-SX
Answer: A
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NO.9 In the operate phase, providing and maintaining reliable, current information about the WLAN system
hardware, software, and applications pertinent to the system's individual components and attributes is
part of which service component?
A. Problem Management
B. Configuration Management
C. Incident Management
D. Change Management
Answer: B
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NO.10 Which of the following statements explains why it is normally best to have more than one
controller-based access point participate in the containment of one rogue access point?
A. Clients connected to the rogue access point must be able to connect to the containment
controller-based
access point.
B. Multiple controller-based access points will load-balance the containment task using fewer resources
than a single access point.
C. Clients connected to the rogue access point may be out of the range of the controller-based access
point
providing containment.
D. Each controller-based access point can handle only a limited amount of clients connected to the rogue
Answer: C
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NO.11 Which service component in the implement phase is typically performed prior to the handover of a
wireless solution to the customer's operations organization?
A. Systems Integration
B. Skill Assessment
C. Systems Acceptance Testing
D. Wireless Check
E. Project Close Out
Answer: C
Cisco 642-631 examen 642-631
NO.12 You are configuring an RF group of controllers that coordinate Radio Resource Management
calculations.
What is the maximum number of WLAN controllers that you can add?
A. 17
B. 20
C. 12
D. 24
Answer: B
Cisco examen 642-631 642-631 642-631
NO.13 Which service component in the wireless operate phase helps isolate and resolve an incident?
A. Change Management
B. Configuration Management
C. Incident Management
D. Acceptance Test Plan
Answer: C
Cisco examen 642-631 642-631 642-631 642-631
NO.14 During the installation of the Cisco WCS version 4.0, an error occurs. Where would you look for the
installation log, in order to learn more about this error?
A. at the root of the installation drive
B. in the Cisco WCS installation directory
C. on the desktop of the server
D. in the Cisco WCS\Logs directory
Answer: C
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NO.15 You want to dynamically assign users to an 802.1Q VLAN as a result of their authentication. In order to
accomplish this, which two IETF RADIUS attributes should you configure on the Cisco Secure
ACS?(Choose two.)
A. 083 Tunnel-Preference
B. 066 Tunnel-Client-Endpoint
C. 064 Tunnel-Type
D. 082 Tunnel-Assignment-ID
E. 081 Tunnel-Private-Group-ID
F. 067 Tunnel-Server-Endpoint
Answer: CE
Cisco examen 642-631 642-631 642-631 examen
NO.16 A mobility group is created by a Cisco WLCM and 4402 Series Wireless LAN Controller. A client that is
anchored on the Cisco WLCM roams to an access point on the 4402 controller. You then run a debug
command on the 4402 controller.
Which message would best describe the establishment of the tunnel from the foreign controller's
perspective?
A. Received Mobile Anchor Export message
B. Transmit Plumbing duplex mobility tunnel message
C. Received Plumbing duplex mobility tunnel message
D. Transmit Mobile Anchor Export message
Answer: D
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NO.17 In order for a controller-based access point to be allowed to participate in aggressive load balancing, it
must have heard the client within how many seconds?
A. 15
B. 10
C. 1
D. 5
Answer: D
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NO.18 When optimizing a standalone point-to-multipoint bridge installation with eight non-root bridges, which
of the following RTS threshold and CWmin settings would be correct for the non-root bridges?
A. RTS threshold = 1,CWmin = 4
B. RTS threshold = 4000,CWmin = 5
C. RTS threshold = 4000,CWmin = 3
D. RTS threshold = 1,CWmin = 5
Answer: D
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NO.19 The IOS of a North American Cisco Aironet 1130AG Series standalone access point has become
corrupt. You must therefore reload the TFTP firmware. Before you press and hold the MODE button, you
should verify that the file name is which of the following?
A. c1130-k9w7-tar.boot
B. c1130-k9w7-tar.123-7.JA1.tar
C. c1130-k9w7-tar.default
D. c1130-k9w7-tar.recover
Answer: C
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NO.20 You review the Failed Attempts logs on an AAA server and find: "unknown network access server
error."
Which failure could produce this error?
A. AAA client and AAA server handshake failure
B. supplicant authentication failure
C. wrong password used by the supplicant
D. failure of the wireless client and AAA server handshake
Answer: A
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