CCNA 640-721시험을 패스함으로 취업에는 많은 도움이 됩니다. Pass4Test는 CCNA 640-721시험패스로 꿈을 이루어주는 사이트입니다. Pass4 Test의 CCNA 640-721덤프는 아주 좋은 학습자료로 응시하는데 충분한 문제집입니다. 여러분이 안전하게 간단하게  CCNA 640-721덤프로 시험을 응시하시면 됩니다.Pass4Test의 자료는 시험대비 최고의 덤프로 시험패스는 문제 없습니다. Pass4Test의 퍼펙트한 덤프인 CCNA 640-721인증시험 자료의 문제와 답만 열심히 공부하면여러분은 완전 안전히 CCNA 640-721인증 자격증을 취득하실 수 있습니다.CCNA 640-721인증시험이 이토록 인기가 많으니 우리 Pass4Test에서는 모든 힘을 다하여 여러분이 응시에 도움을 드리겠으며 또 일년무료 업뎃서비스를 제공하며  Pass4Test 선택으로 여러분은 자신의 꿈과 더 가까워질 수 있습니다. 희망찬 내일을 위하여 Pass4Test선택은 정답입니다.이 자료로 여러분은100%  CCNA 640-721 인증시험을 패스할 수 있으며 Pass4Test을 선택함으로 성공을 선택한 것과 같습니다. Pass4Test가 제공하는 시험가이드로 효과적인 학습으로 많은 분들이 모두 인증시험을 패스하였습니다. 이건 모두 Pass4Test 인증시험덤프로 시험준비를 하셨기 때문입니다. 그중 CCNA 640-721 인증시험을 패스한 분들도  Pass4Test인증시험 덤프를 사용하셨기 때문입니다.

 

 

NO.1 Effective Isotropic Radiated Power is calculated by using which three values? (Choose three.)
A. antenna bandwidth
B. antenna gain
C. cable loss
D. receiver sensitivity
E. SSID
F. transmission power
Answer: B,C,F

NO.2 Which roaming situation using controllers in a Cisco Unified Wireless Network requires a client using
WPA2 with PKC to reauthenticate to the network?
A. A wireless client roams to another AP on a different controller in the same mobility domain.
B. A wireless client roams to another AP on the same controller.
C. A wireless client roams to another AP after being out of range of the network for 2 minutes.
D. A wireless client roams to another AP on a controller in a different mobility domain.
Answer: D

NO.3 The central office is currently using a combination of 4400 and 2100 series WLAN controllers running
v4.2 and a variety of LWAPP-enabled access points servicing both 2.4 GHz and 5 GHz. The WLAN
deployment has been extended to each remote office by implementing a 526 WLAN controller running
v4.1 and several 521 access points. Wireless client deployment uses EAP-TLS authentication using a
centralized RADIUS server plus 802.11n for performance. After the first remote office deployment, remote
office users complain that they are not connecting via 802.11n.
What is the most likely cause of this problem?
A. The 526 WLAN controller does not support external authentication via RADIUS, prohibiting
authentication.
B. The 521 AP does not support 5 GHz, which prohibits 802.11n.
C. The 521 AP and 526 WLAN controllers do not support AES, which prohibits 802.11n.
D. The 526 WLAN controller does not support 802.11n with v4.1 and must be upgraded to v4.2.
E. The 526 WLAN controller does not support 802.11n with either v4.1 or v4.2.
Answer: E

NO.4 Which four file formats are used when importing a single campus map into the Cisco WCS 5.0?
(Choose four.)
A.BMP
B.GIF
C.JPEG
D.JPG
E.PNG
F.VSD
G.MAP
H.XML
Answer: B,C,D,E

NO.5 What is fading?
A. Another signal source is producing energy on the channel in which you are trying to operate.
B. The desired signal reaches the receiving antenna via multiple paths, each of which has a different
propagation delay and path loss.
C. A time-varying change in the path loss of a link with the time variance governed by the movement of
objects in the environment, including the transmitter and receiver themselves.
D. A function of the frequency and should be provided in the cable specification by the vendor.
E. The minimum signal level for the receiver to be able to acceptably decode the information.
F. The time delay from the reception of the first instance of the signal until the last instance.
Answer: C

NO.6 The existing Cisco Unified Wireless Controller is running v5.0 code for both the controllers and the
Cisco WCS. A controller has been configured with an appropriate rogue rule condition to report
discovered APs to the Cisco WCS. What default alarm level is used to display all rogue APs in the Alarm
Summary?
A. Critical
B. Flash
C. Major
D. Minor
E. Urgent
Answer: D

NO.7 A client is attached to the Cisco Unified Wireless network using controllers. When the client is using
WPA2 and EAP authentication, where are the wireless encryption keys located during the active user
session? (Choose two.)
A. on the access point
B. on the RADIUS server
C. on the Cisco WCS
D. on the client
E. on the Cisco WLC
Answer: A,D

NO.8 DRAG DROP
STUDY this as you will likely get this DRAG and DROP question! Exhibit:
Answer:

NO.9 Cisco Client Management Frame Protection is running on a mobility group with two controllers. Which
two MFP requirements protect the network? (Choose two.)
A. forces clients to authenticate, using a secure EAP method only
B. implements the validation of wireless management frames
C. requires CCXv5
D. requires the use of anonbroadcast SSID
E. requires CCXv4
Answer: B,C

NO.10 When creating a wireless profile in the Cisco ADU and you have selected the WPA/WPA2/CCKM radio
button option, what other decision must you make and then configure on this same screen?
A. the address and the server secret of the authentication device you will authenticate with
B. the encryption type
C. the EAP type to be used for authentication
D. the length and value of the pre-shared key
E. the SSID of the wireless client
Answer: C

NO.11 Which limitation applies to the use of the Cisco WLAN Solution Management over Wireless feature.?
A. Controllers must be managed using only secure protocols (that is, SSH and HTTPS), notnonsecure
protocols (that is, HTTP and Telnet).
B. Read-write access is not available; only read-only access is supported.
C. Uploads and downloads from the controller are not allowed.
D. Wireless clients can manage other controllers however not the same controller and AP to which the
client is associated.
Answer: C

NO.12 Which two attacks does Management Frame Protection help to mitigate? (Choose two.)
A. Eavesdropping
B. Denial of Service
C. War Driving
D. Man-in-the-Middle
Answer: B,D

NO.13 What is the result when client exclusion is enabled with a timeout value of zero?
A. Clients are excluded indefinitely.
B. Clients are never excluded.
C. Client exclusion is disabled.
D. Clients must be explicitly included by specifying the MAC address.
E. Exclusion and inclusion is determined by access list.
Answer: A

NO.14 Which CLI command shows the controller configuration in a way that is similar to the way that it is
displayed on Cisco IOS routers?
A. showconfig
B. show runconfig
C. show run-config
D. show runningconfig
E. show running-config
Answer: E

NO.15 In the AP Layer 3 controller discovery process, after the LWAPP Discovery Request is broadcast on a
local subnet, what is the next step that the AP takes?
A. Determine whether the controller responses are the primary controller.
B. Send an LWAPP discovery request to controllers learned via OTAP if operational.
C. Send an LWAPP response to the master controller if known.
D. Wait 5 seconds and resend a Discovery Request to the local subnet.
Answer: B

NO.16 Lightweight access points send control traffic to which device(s)?
A. Other access points.
B. The Wireless Control System.
C. The Wireless Controller.
D. Lightweight access points don't send control traffic.
Answer: C

NO.17 What three authentication methods are generally used in enterprise wireless networks? (Choose
three.)
A. AES
B. CCKM
C. EAP-FAST
D. EAP-TLS
E. PEAP
F. WEP
Answer: C,D,E

NO.18 Up to how many Cisco WiSMs are supported in a single mobility group operating under v5.0 code?
A. 5
B. 12
C. 16
D. 24
E. 150
F. 300
Answer: B

NO.19 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

NO.20 How do the features that are available on the Cisco WCS for Linux version differ from those of the Cisco
WCS for Windows version?
A. Assuming that there are no differences in hardware, a Cisco WCS for Linux can support up to 750
wireless LAN controllers. A Cisco WCS for Windows can support up to 250 wireless LAN controllers.
B. Cisco WCS for Windows includes support for Cisco Spectrum Expert clients. Cisco WCS for Linux
does not support Cisco Spectrum Expert clients.
C. Cisco WCS for Linux is required for deployments.
D. There are no differences in features between the Linux and Windows versions of Cisco WCS.
Answer: D