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 one of the controller CLI commands assigns its management interface to the Cisco IOS Catalyst switch native vlan interface?

A. Config interface vlan management 0
B. Config interface vlan management 20
C. Config interface vlan management 30
D. Config interface vlan management 1
Answer: A Questions: 30
True or false: A computer device stores data in analog form.

A. True
B. False
Answer: B Questions: 31
Which two statements correctly describe beacon frames used by access points? (Choose two.)

A. Provides vendor proprietary information B. Contains SSIDs if this feature is enabled C. Sent in response to a probe frame
D. Is another name for an associated request
Answer: A, B Questions: 32
What is the reason that Cisco recommends using Tftpd32 version 3.0 or later when upgrading wireless LAN controller software to release 4.1 or later?

A. Tftpd32 is Cisco Compatible Extensions version 4 compliant
B. Tftpd32 supports TFTP file transfers larger than 32 MB C. Tftpd32 is a component of CiscoWorks LMS
D. Tftpd32 supports EoIP tunneling which is required for remote Cisco WLC upgrades
Answer: B Questions: 33
For the following options, which set of commands assigns a standalone access point an IP
address of 10.0.0.24 with a 27-bit subnet mask and a gateway of 10.0.0.1? A. config t
Page 7 of 25

Exam Name: Implementing Cisco Unified Wireless Networking Essentials (IUWNE)
Exam Type: Cisco
Exam Code: 640-721 Total Questions: 116

interface Dot11Radio0
ip address 10.0.0.24 255.255.255.224
exit
ip default-gateway 10.0.0.1
B. config t interface BVI1
ip address 10.0.0.24 255.255.255.224
exit
ip default-gateway 10.0.0.1
C. config t interface BVI1
ip address 10.0.0.24 255.255.255.192
exit
ip default-gateway 10.0.0.1
D. config t
interface FastEthernet1
ip address 10.0.0.24 255.255.255.224
exit
ip default-gateway 10.0.0.1
Answer: B Questions: 34
If you have the Cisco ADU installed but wish to use the Windows Zero Config utility to configure a wireless network profile, which action should you take first?

A. Uninstall the Cisco ADU.
B. Define a common profile in both the Cisco ADU and WZC.
C. In the WZC utility, make sure that the box labeled “Use Windows to configure my Wireless
Network Settings” is checked.
D. Define the wireless profile in the Wireless Networks tab in WZC.
Answer: C Questions: 35
On what layers of the OSI reference model do wireless networks operate?(Choose two)

A. Physical layer B. Network layer C. Data link layer. D. Session layer
Answer: A, C Questions: 36
How to differ application-specific devices from laptop computers in the way they support Cisco
Compatible Extensions?

A. There is no differentiation. ASDs and laptops must both support the same CCX features.
B. ASDs are required to support only CCXv1 and v2 features. Laptops must support all CCX
features.
C. Several features that are required for laptops are not required for ASDs.
D. ASDs are required to support only CCXv5 management features, while laptops are optional features.

Page 8 of 25

Exam Name: Implementing Cisco Unified Wireless Networking Essentials (IUWNE)
Exam Type: Cisco
Exam Code: 640-721 Total Questions: 116

Answer: C

Questions: 37
When choosing an EAP type for your Cisco ADU security profile, in order to authenticate successfully, what must you ensure?

A. That the time set on the clocks for the wireless client and the authenticator are close to the same time
B. That the client and authentication server support the same encryption protocol
C. That the EAP type that you selected is supported by the authentication server
D. That the EAP type selected is known not to exchange any of its credentials in the clear
Answer: C Questions: 38
EAP-FAST is an authentication protocol that creates a secure tunnel without using certificates. EAP-FAST was first supported where?

A. CCXv4
B. CCXv1
C. CCXv3
D. CCXv2
Answer: C Questions: 39
For the following items, which is derived from measuring the RF duty cycle?

A. LWAPP header length
B. Dynamic channel selection
C. RF utilization
D. Transmit power control
Answer: C Questions: 40
RF signals offer relatively short range as compared to light signals. True or false?

A. True
B. False
Answer: B Questions: 41
Which security benefit is enabled by use of Management Frame Protection?

A. Prevents the formation of client ad hoc networks within the RF coverage domain.
B. Protects the network infrastructure from denial-of-service attacks that attempt to flood the network with associations and probes.
C. Detects network reconnaissance probes, like those used by tools like NetStumbler, that attempt to discover the wireless network topology.
D. Provides encryption of administrator sessions between a wireless client and a wireless LAN
controller.

Answer: B

Page 9 of 25

Exam Name: Implementing Cisco Unified Wireless Networking Essentials (IUWNE)
Exam Type: Cisco
Exam Code: 640-721 Total Questions: 116

Questions: 42
Observe the following items carefully, In 802.1X, which is the supplicant?

A. The device that performs the authentication
B. The point of access
C. The machine that attempts to access the network
D. The machine in the network that keeps a list of conditions
Answer: C Questions: 43
Which three primary components describe TKIP? (Choose three.)

A. Message Integrity Check
B. Dynamic WEP
C. Per-Packet Key Hashing
D. Broadcast Key Rotation
Answer: A, C, D Questions: 44
802.1X defined which three roles? (Choose three.)

A. Authenticatee
B. AAA Server
C. Authentication Server
D. Supplicant
E. Authenticator
Answer: C, D, E

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Skip all the worthless 640-721 tutorials and download 640-721 exam materials with real questions and answers and a price too unbelievable to pass up. Act now and download your Actual Tests today!Questions: 1
For the following items, which one correctly describes fading?

A. A function of the frequency and should be provided in the cable specification by the vendor.
B. Another signal source is producing energy on the channel in which you are trying to operate.
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. The desired signal reaches the receiving antenna via multiple paths, each of which has a different propagation delay and path loss.
Answer: C Questions: 2
Observe the following statements, which limitation applies to the use of the Cisco WLAN Solution
Management over Wireless feature?

A. Read-write access is not available; only read-only access is supported.
B. Controllers must be managed using only secure protocols (that is, SSH and HTTPS), not nonsecure protocols (that is, HTTP and Telnet).
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 Questions: 3
As a network technician, you must know Cisco WiSMs . Up to how many Cisco WiSMs are
supported in a single mobility group operating under v5.0 code?

A. 16
B. 12
C. 24
D. 5
Answer: B Questions: 4
You work as a network technician at Company.com, read this subject carefully, then answer the question. 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. Major B. Critical C. Flash D. Minor
Answer: D Questions: 5
What are the four types of wireless networks? (Choose four)

A. Wireless PAN B. LAN

Page 1 of 25

Exam Name: Implementing Cisco Unified Wireless Networking Essentials (IUWNE)
Exam Type: Cisco
Exam Code: 640-721 Total Questions: 116

C. MAN
D. VLAN E. WAN
Answer: A, B, C, E Questions: 6
Cisco Client Management Frame Protection is running on a mobility group with two controllers.
For the following options, which two MFP requirements protect the network? (Choose two.)

A. Requires the use of a nonbroadcast SSID B. Requires CCXv5
C. Implements the validation of wireless management frames
D. Forces clients to authenticate, using a secure EAP method only
Answer: B, C Questions: 7
What happens when client exclusion is enabled with a timeout value of zero?

A. Clients are excluded indefinitely. B. Client exclusion is disabled.
C. Clients are never excluded.
D. Clients must be explicitly included by specifying the MAC address.
Answer: A Questions: 8
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 by use of 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. Which will most likely cause this problem?

A. The 521 AP does not support 5 GHz, which prohibits 802.11n.
B. The 521 AP and 526 WLAN controllers do not support AES, which prohibits 802.11n.
C. The 526 WLAN controller does not support external authentication via RADIUS, prohibiting authentication.
D. The 526 WLAN controller does not support 802.11n with either v4.1 or v4.2.
Answer: D Questions: 9
How do the characteristics that are available on the Cisco WCS for Linux version differ from those
of the Cisco WCS for Windows version?

A. Cisco WCS for Linux is required for deployments.
B. 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.
C. Cisco WCS for Windows includes support for Cisco Spectrum Expert clients. Cisco WCS for
Linux does not support Cisco Spectrum Expert clients.
D. There are no differences in features between the Linux and Windows versions of Cisco WCS.

Page 2 of 25

Exam Name: Implementing Cisco Unified Wireless Networking Essentials (IUWNE)
Exam Type: Cisco
Exam Code: 640-721 Total Questions: 116

Answer: D

Questions: 10
What is the typical maximum range of a wireless PAN?

A. 45 feet B. 50 feet. C. 55 feet D. 60 feet
Answer: B Questions: 11
Which one of the following CLI commands displays the controller configuration in a way that is similar to the way that it is shown on Cisco IOS routers?

A. Show run-config
B. Show config
C. Show run config
D. Show running-config
Answer: D Questions: 12
Observe the following attacks, which two does Management Frame Protection help to mitigate?
(Choose two.)

A. War Driving
B. Man-in-the-Middle
C. Eavesdropping
D. Denial of Service
Answer: B, D Questions: 13
Which device(s) will Lightweight access points send control traffic to?

A. The Wireless Control System. B. Other access points.
C. The Wireless Controller.
D. Lightweight access points don’t send control traffic.
Answer: C Questions: 14
For the following elements, which three define the 802.11n implementation of MIMO? (Choose three.)

A. Channel Bonding
B. Maximal Ratio Combining
C. Spatial Multiplexing
D. Transmit Beam Forming

Answer: B, C, D

Page 3 of 25

Exam Name: Implementing Cisco Unified Wireless Networking Essentials (IUWNE)
Exam Type: Cisco
Exam Code: 640-721 Total Questions: 116

Questions: 15
True or false: A wireless PAN consumes little power from small handheld computer devices.

A. True
B. False
Answer: A Questions: 16
In the AP Layer 3 controller discovery process, after the LWAPP Discovery Request is broadcast on a local subnet, which action will AP take next?

A. Send an LWAPP response to the master controller if known.
B. Send an LWAPP discovery request to controllers learned via OTAP if operational. C. Wait 5 seconds and resend a Discovery Request to the local subnet.
D. Determine whether the controller responses are the primary controller.
Answer: B Questions: 17
Which three values will be used to calculate Effective Isotropic Radiated Power? (Choose three.)

A. Antenna bandwidth
B. Antenna gain
C. Cable loss
D. Transmission power
Answer: B, C, D Questions: 18
When importing a single campus map into the Cisco WCS 5.0, which four file formats will be used? (Choose four.)

A. BMP B. PNG C. GIF D. JPEG
E. JPG
Answer: B, C, D, E Questions: 19
You are a network engineer at Company.com, when creating a wireless profile in the Cisco ADU
and you have selected the WPA/WPA2/CCKM radio button option, what other decision will you make and then configure on this same screen?

A. The SSID of the wireless client
B. The length and value of the pre-shared key C. The EAP type to be used for authentication D. The encryption type

Answer: C Questions: 20
Page 4 of 25

Exam Name: Implementing Cisco Unified Wireless Networking Essentials (IUWNE)
Exam Type: Cisco
Exam Code: 640-721 Total Questions: 116

What is a common standard for wireless LANs?(Choose two)

A. IEEE 802.11
B. IEEE 802.3z
C. Wi-Fi
D. IEEE 802.16.
Answer: A, C Questions: 21
Match the proper relationship between interface description and the appropriate.

1. Designed to be analogous to VLANs for wireless LAN client device
2. The only port that is active when the controller is in boot mode
3. This interface is the only consistently*pingable* in-band interface IP address on the Cisco WLC
4. Used for Layer 3 communications between the Cisco WLC and the lightweight access points
5. Used to support mobility management. DHCP relay, and guest web authencation.

I.AP Manager II.Dynamic III.Management IV.Service Port V.Virtual

A. I-4,II-1,III-5,IV-2,V-3
B. I-4,II-1,III-2,IV-5,V-3
C. I-4,II-1,III-5,IV-3,V-2
D. I-4,II-1,III-2,IV-3,V-5
Answer: A Questions: 22
Which roaming situation using controllers in a Cisco Unified Wireless Network requires a client by use of WPA2 with PKC to reauthenticate to the network?

A. A wireless client roams to another AP on the same controller.
B. A wireless client roams to another AP after being out of range of the network for 2 minutes.
C. A wireless client roams to another AP on a different controller in the same mobility domain. D. A wireless client roams to another AP on a controller in a different mobility domain.
Answer: D Questions: 23
Which three methods of authentication are usually used in enterprise wireless networks? (Choose
three.)

A. AES
B. CCKM C. PEAP
D. EAP-FAST E. EAP-TLS

Answer: C, D, E Questions: 24
Page 5 of 25

Exam Name: Implementing Cisco Unified Wireless Networking Essentials (IUWNE)
Exam Type: Cisco
Exam Code: 640-721 Total Questions: 116

You are a network technician at Company.com, study the options carefully.A client is attached to
the Cisco Unified Wireless network by use of 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 client
B. On the Cisco WCS
C. On the RADIUS server
D. On the access point
Answer: A, D Questions: 25
What relatively new standard applies to wireless MANs?

A. IEEE 802.11
B. IEEE 802.3z
C. Wi-Fi
D. IEEE 802.16.
Answer: D Questions: 26
Which statement best describes an infrastructure basic service set according to IEEE 802.11
specifications?

A. No relaying of signals from one client to another client. B. Also called an Ad Hoc Network.
C. Enables the use of ESS.
D. The BSSID is generated from the first wireless client that starts up in the IBSS.
Answer: C Questions: 27
Which of the following items increases bandwidth and resists multipath problems by carrying data
in subcarriers?

A. Narrow Band Frequency
B. Direct Sequence Spread Spectrum
C. Frequency Hopping Spread Spectrum
D. Orthogonal Frequency Division Multiplexing
Answer: D Questions: 28
In which format are the files saved, when creating new configuration profiles in Cisco Secure
Services Client?

A. TXT B. RTF
C. HTML D. XML

Answer: D

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Feedbacks
I passed the exam of 640-721 on August 27th, 2008.

I am very sorry for my score, because I thought I could have got full marks although I passed.

This may have the relationship with answering too fast.

I spent a month on studying the study guide of Wireless and a half month on tests before taking exam.

If you have time, you can logon the forum, there you may find something helpful!

I hope the above information will help you, good luck!
– syfee (Nov, 6 2008)Hi guys

I passed the CCNA Wireless exam on August 17th, 2008, my score is 988/1000.

I have been optimistic on the prospects of the development of Wireless, so I intend to pass the exam in the shortest time.

It cost me a month from review to taking the exam, the way I used to prepare for the exam was to study the tests of P4S other than examining study guides, this learning method is very effective.

My next objective is CCVP. Good luck!– deffw (Nov, 5 2008)Hi all,

I passed the exam of 640-721 on August 29th, 2008, my score is 972/1000.

This exam is relatively easy, the subjects are mainly the basic knowledge points, so you should not worry about the examination.

Of course, you should not ignore the preparation work due to the simple exam. I think there will be someone who fails the exam.

Here, I will share my study materials with you: study guides, authentication guides and P4S.

Wish you passing the exam successfully.
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