How to pass ccna wireless 640-722 iuwne quick reference in Jun 2016

Exam Code: 640-722 (Practice Exam Latest Test Questions VCE PDF)
Exam Name: CCNA – Wireless Associate – IUWNE
Certification Provider: Cisco
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2016 Jun 640-722 Study Guide Questions:

Q111. – (Topic 6) 

Instructions 

Refer to the exhibits to answer the questions related to this task. 

THIS TASK DOES NOT REQUIRE DEVICE CONFIGURATION. 

To access the multiple-choice question, click on the numbered box on the left of the top panel. 

There is one multiple-choice question with this task. Be sure to answer the question before selecting the Next button. 

Scenario 

You are deploying a small wireless test network in a lab. The network is made up of a wireless controller (WLC1), a dual radio access point (AP1) and a switch (SW1) that is configured as a DHCP server. The IP subnet being used for this network is 10.10.10.0/24. 

In setting up the wireless network, it is desired that the DHCP server that is configured in WLC1 provides IP addressing to the WLAN. When devices attempt to join the network, they fail to receive an IP address in the range provided by the DHCP server in WLC1, but they do receive an IP address from the DHCP server in SW1. What is causing this issue? 

A. The external DHCP server in SW1 will always be the preferred DHCP server and WLC1 will always be the secondary DHCP server in the WLAN. 

B. The DHCP server address for SW1 needs to be removed from the DHCP server configuration in WLC1. 

C. The primary DHCP server address in WLC1 is incorrect. 

D. The primary DHCP server configured in WLC1 is not enabled. 

Answer: D 

Explanation: 

This can be verified by the following screen shot, showing the DHCP server is disabled at the bottom: 

Q112. – (Topic 6) 

Which portion of a WLAN deployment can WLC message logs help to troubleshoot? 

A. RF issues 

B. encryption issues between APs and clients 

C. configuration verification issues 

D. infrastructure and client Issues 

E. AP placement issues 

Answer: D 

Explanation: 

From the official CCNA wireless certification guide: 

“The message logs include information related to the network infrastructure, client issues, 

authentication issues, and AP association issues” 

Q113. – (Topic 7) 

Refer to the exhibit. 

Which antenna would produce the given radiation pattern? 

A. patch 

B. Yagi 

C. parabolic dish 

D. dipole 

E. omni-directional 

Answer: A 

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Q114. – (Topic 5) 

Refer to the exhibit. 

You made a manual configuration change to a controller and now you need to compare the controller configuration seen on Cisco WCS to the configuration that is present in the controller. 

Which menu can you use to do compare the configurations? 

A. Reports 

B. Monitor 

C. Configure 

D. Services 

E. Administration 

F. Tools 

Answer: C 

Explanation: 

The Configure menu enables you to configure templates, controllers, access points, Ethernet switches, chokepoints, Wi-Fi TDOA receivers, config groups, auto provisioning, scheduled configuration tasks, profiles, ACS view servers, and TFTP servers on your network. 

Reference: http://www.cisco.com/c/en/us/td/docs/wireless/wcs/7-0/configuration/guide/WCS70cg/7_0wst.html#wp1068994 

Q115. – (Topic 6) 

Instructions 

. THIS TASK DOES NOT REQUIRE DEVICE CONFIGURATION. 

. To access the multiple-choice questions, click on the numbered boxes on the left of the top panel. 

. There is one multiple-choice question with this task. Be sure to answer the question before selecting the Next button. 

Scenario 

You are deploying a small wireless test network in a lab. The network is made up of a wireless controller (WLC1), a dual radio access point (AP1) and a switch (SW1) that is configured as a DHCP server. The IP subnet being used for this network is 10.10.10.0/24. You would like to test how clients join the network and from which DHCP server they receive an address. 

All equipment is operational. Through which two methods can a wireless client receive an IP address when associating to the WLAN? (Choose two.) 

A. The clients can receive an IP address from SW1. 

B. Tie clients can receive an IP address from WLC1. 

C. The clients will not receive an IP address from either DHCP server because of overlapping address ranges. 

D. The clients can receive an IP address in a round-robin manner from either SW1 or WLC1. 

E. The clients can use a static IP address. 

Answer: B,E 

Explanation: 

As shown below, the DHCP server functionality has been enabled on the WLC1. Aside from DHCP, all clients can always statically assign themselves an IP address. 

Q116. – (Topic 5) 

An AP was reset while working on the correct association to a Cisco WCS version 7.0. 

Which item was cleared during the reset? 

A. static IP address 

B. the location ID of the AP 

C. WLC primary, secondary, tertiary 

D. AP name 

E. certificate 

F. Nothing was cleared. 

Answer: F 

Explanation: 

Reset — Sets the table to the default display so nothing will be cleared. 

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Q117. – (Topic 6) 

Instructions 

. THIS TASK DOES NOT REQUIRE DEVICE CONFIGURATION. 

. To access the multiple-choice question, click on the numbered box on the left of the top panel. 

. There is one multiple-choice question with this task. Be sure to answer the question before selecting the Next button. 

Scenario 

A wireless LAN controller, AP, IOS switch, and wireless client have been properly configured. Use the exhibits to answer the question. 

When a client associates to ExamSSlD, which network address will be assigned? 

A. The IP address assigned will be based on the AP network assignment of 10.10.10.0. 

B. The IP address assigned will be based on the AP network assignment of 172.16.23.0. 

C. The IP address will be assigned in a round-robin format based on the 172.16.12.0, 172.16.23.0, 192.168.14.0 address pools. 

D. The IP address will be assigned in a round-robin format based on the 172.16.12.0, 192.168.14.0, 192.168.25.0 pools. 

E. The IP address will be assigned in a round-robin format based on the 172.16.12.0, 172.16.23.0, 192.168.14.0, 192.168.25.0 pools. 

Answer: D 

Explanation: 

The IP addresses will be assigned round robin to the three interface groups, which we can see are vlan20, vlan40, and vlan50. From the WLC-interfaces tab we see that the IP addresses assigned to these 3 interfaces are 172.16.12.10, 172.16.14.10, and 192.168.25.10, respectively. 

Q118. – (Topic 5) 

The Cisco WCS administrator wants to create an accurate RF heat map based on RF prediction data. Which statement about map creation in Cisco WCS is true? 

A. The administrator must manually add walls, doors, and windows to the map. 

B. Cisco WCS automatically detects walls, doors, and windows and adds them to the map, but only when Cisco WCS Navigator is available. 

C. Cisco WCS automatically detects walls, doors, and windows and adds them to the map, but only when a Cisco 3300 Series MSE is available. 

D. All walls, doors, and windows must be included in the file that is uploaded as a background map. 

Answer: A 

Explanation: 

General Notes and Guidelines for Using the Map Editor 

Consider the following when modifying a building or floor map using the map editor. 

. Cisco recommends that you use the map editor to draw walls and other obstacles rather than importing an .FPE file from the legacy floor plan editor

. – If necessary, you can still import .FPE files. To do so, navigate to the desired floor area, choose 

Edit Floor Area from the Select a command drop-down list, click Go, select the FPE File check box, and browse to and choose the .FPE file. . 

You can add any number of walls to a floor plan with the map editor; however, the processing power and memory of a client workstation may limit the refresh and rendering aspects of WCS. 

-Cisco recommends a practical limit of 400 walls per floor for machines with 1-GB RAM or less.

– All walls are used by WCS when generating RF coverage heatmaps. 

However, the MSEs use no more than 50 heavy walls in its calculations, and the MSE does not use light walls in its calculations because those attenuations are already accounted for during the calibration process. .

If you have a high resolution image (near 12 megapixels), you may need to scale down the image resolution with an image editing software prior to using map editor. 

Reference: http://www.cisco.com/c/en/us/td/docs/wireless/wcs/7-0/configuration/guide/WCS70cg/7_0maps.html 

Q119. – (Topic 7) 

An engineer is adding a controller to a WCS. What three categories of parameters are needed? (Choose three.) 

A. IP parameters 

B. SNMP Parameters 

C. Mobility Parameters 

D. Telnet/SSH Parameters 

E. TFTP Parameters 

F. RADIUS Parameters 

Answer: A,B,D 

Q120. – (Topic 1) 

The network administrator receives complaints of slow wireless network performance and performs a sniffer trace of the wireless network in preparation for migration to 802.11n. The sample capture shows frames that contains AP beacons with NonERP_Present bit set to 1 and frames with RTS/CTS. 

Which two conclusions can be interpreted from these frames? (Choose two.) 

A. The network is performing slowly because 802.11n clients are already mixed with 802.11g clients. 

B. The network is performing slowly because 802.11b clients still exist in the network. 

C. The network is performing slowly because a wireless client is incorrectly configured, which results in RF interference. 

D. Possible 802.11b wireless clients are located only in the AP cell radius where the sniffer capture was performed. 

E. Possible 802.11b wireless clients could be located anywhere in the wireless network. 

Answer: B,E 

Explanation: 

If an ERP AP hears a beacon from an AP where the supported data rates contain only 802.11b or 802.11 DSSS rates, it will enable the NonERP_Present bit in its own beacons, enabling protection mechanisms in its BSS. In simpler terms, if an 802.11g AP hears a beacon frame from an 802.11 or 802.11b access point or ad hoc client, the protection mechanism will be triggered. 

Reference: http://mrncciew.com/2014/11/02/cwap-802-11-protection-mechanism/ 

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