Latest Cisco CCIE 350-050 Real Exam Download 221-230

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QUESTION 221

You are designing a new WLAN for an old warehouse. To make sure that the spectrum analysis is accurate, which two of these devices should you try to remove from the warehouse? (Choose two.)

 

A.

old 2.4-GHz cordless phones

B.

new DECT 6.0 series cordless phones

C.

900-MHz PA radio system

D.

the neighbor Wi-Fi system that operates in both 2.4 GHz and 5.0 GHz

E.

old microwave ovens

 

Answer: AE

 

 

QUESTION 222

You were hired as a wireless consultant to plan and design a secure WLAN on a Cisco Unified Wireless Network, allowing access only by the employees of the company. The requirements are as follows:

 

* Authenticate employees based on their existing Active Directory user domain credentials.

* The username/password credentials need to be protected during the authentication handshake by using a PKI.

* Encrypt data traffic using the strongest encryption method defined by the 802.11i standard.

* Implement a standard authentication method that is supported by most wireless clients and RADIUS servers

 

What option meets these requirements?

 

A.

EAP-TLS with WPA2-AES

B.

PEAPv0/EAP-MS-CHAPv2 with WPA2-AES

C.

EAP-FAST/EAP-MS-CHAPv2 (anonymous PAC provisioning) with WPA2-TKIP

D.

EAP-FAST/EAP-MS-CHAPv2 (anonymous PAC provisioning) with WPA2-AES

 

Answer: B

 

 

QUESTION 223

Which association certifies product interoperability between different vendors so that users are not locked into a single brand of Wi-Fi products?

 

A.

IEEE

B.

IETF

C.

Wi-Fi Alliance

D.

FCC

E.

Wireless Networking Alliance

F.

Cisco Compatible Extensions

 

Answer: C

 

 

QUESTION 224

What is the role of the IEEE regarding WLANs?

 

A.

IEEE conducts certification testing to ensure that products from different vendors can interoperate.

B.

IEEE provides guidance and creates regulations for each regulatory authority concerning spectrum

usage, including frequency and power settings.

C.

IEEE maintains and creates technical standards and protocols used by wireless LAN devices.

D.

IEEE enforces standards and regulations within each regulatory domain and reports violations to

appropriate authorities.

 

Answer: C

 

 

QUESTION 225

Which RRM feature increases the AP radio Tx power when the client SNR levels pass below a given threshold?

 

A.

Dynamic Channel Assignment

B.

Transmit Power Control

C.

Dynamic Transmit Power Control

D.

Coverage Hole Detection

 

Answer: D

 

 

QUESTION 226

It is recommended that you use channels 1-6-11 on a 2.4-GHz WLAN deployment with three or more APs, because only channels 1 to 11 are available on the 2.4-GHz Cisco ISM band due to the regulatory domain. Which one of these statements explains why this channel usage is recommended?

 

A.

This channel usage is required by the 802.11 standard.

B.

They are the only non-overlapping channels available on the 2.4-GHz ISM band.

Channels other than 1-6-11 overlap each other.

C.

This is the highest channel usage combination available (allowing three different channels to be used),

combining channels that are separated enough on the 2.4-GHz ISM band to avoid co- channel interference.

D.

The channels are separated 30-MHz away, and the energy radiated by an 802.11b/g device can only

extend up to 25-MHz within the bandwidth of the channels due to regulations.

 

Answer: C

 

 

QUESTION 227

Which two of the below protocols must a client support in order to use client MFP? (Choose two.)

 

A.

802.1x

B.

CCXv4

C.

CCXv5

D.

WEP

E.

WPA1 with TKIP or AES-CCMP

F.

WPA2 with TKIP or AES-CCMP

 

Answer: CF

 

 

QUESTION 228

Which three of the below values does a wireless client use, when operating in DCF mode, to calculate the duration field in the 802.11 MAC header for transmitting a non-fragmented unicast data packet? (Choose three.)

 

A.

MPDU length

B.

SIFS interval

C.

DIFS interval

D.

PIFS interval

E.

transmit rate

F.

ACK length

 

Answer: BEF

 

 

QUESTION 229

The 802.11e standard defines mechanisms for providing QoS treatment to wireless frames. Which three of these mechanisms enable the 802.11e EDCA standard to achieve differentiated treatment for wireless frames? (Choose three.)

 

A.

priority queuing

B.

802.3af tag mapping

C.

four access categories

D.

AP controlled access phase

E.

differentiated back-off timers

 

Answer: ACE

 

 

QUESTION 230

The IEEE 802.11i standard defines mechanisms for wireless client authentication and data encryption. During 802.1X EAP authentication, a number of keys are used in order to establish a secure encrypted link between the access point and the client. Which two of these keys are derived via the WPA four-way handshake? (Choose two.)

 

A.

PMK

B.

PTK

C.

MSK

D.

GMK

E.

GTK

 

Answer: BE

 

 

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