どうしてCisco 認証はそんな人気がありますか？いろいろな試験の中でCisco 認証は試験価値を持ちます。CCNA Wireless 認定は、ワイヤレス LAN 技術者（ネットワーキング アソシエイト / 管理者、ワイヤレス サポート スペシャリスト、WLAN プロジェクト マネージャなど）の役割はきわめて重要性が高いとの考えに基づいています。
などのCisco 認定資格を取得することができます。
640-721全称はImplementing Cisco Unified Wireless Networking Essentials (IUWNE)で、試験番号：640-721J IUWNE 関連資格：CCNA Wireless 試験時間：90分（65問） 試験言語：日本語、英語、中国語、ロシア語、ポルトガル語、韓国語、フランス語、スペイン語
試験概要
640-721 IUWNE Implementing Cisco Unified Wireless Networking Essential 試験は、CCNA Wireless 認定資格に関連した試験です。この試験では、小規模から中規模までの WLAN の導入、設定、操作、およびトラブルシューティングに関する受験者の知識が問われます。
640-721 (Implementing Cisco Unified Wireless Networking Essentials (IUWNE)）問題はtestpassportのITエンジニアとCisco 製品の専門家によって作り上げて、最も新しい本試験題を含めています。この科目は116の本試験の問題です。問題集はPDFバージョンとソフトバージョンを提供することができます。TESTPASSPORTの商品は品がよくて値段が安くて、品質がいいし合格率も高いです。更新周期は長くて一年間無料でアップロードすることができます。もっといいサービスを提供します。無料デモダウンロードすることができます。
CCNA Wireless の認定条件
CCNA 認定もしくはいずれかの CCIE 認定
CCNA Wireless 試験および推奨トレーニング
640-721J IUWNE
CCNA Wireless の再認定
CCNA Wireless 認定の有効期間は3年間です。再認定を受けるには、CCNA Wireless、CCNA Security、CCNA Voice 試験、試験番号が「642」で始まるプロフェッショナル レベルの試験、Cisco Specialist 試験（Sales Specialist 試験は除く）、現行の CCIE か CCDE 筆記試験のいずれかに合格することが必要です。
testpassportの640-721 試験無料デモダウンロードすることができます。
http://pdf.testpassport.jp/640-721.pdf
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
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
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
4. You work as a network technician at Cisco.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
5. What are the four types of wireless networks?(Choose four)
A. Wireless PAN
B. LAN
C. MAN
D. VLAN
E. WAN
Answer: ABCE
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: BC
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
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
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.
Answer: D
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