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What are reqs for VoWLAN?
A. RSSI -67
B. SNR 25
C. 20% overlapping cells
Correct Answer: C
Which wireless survey you do considering the “infrastructure” in the building?
Correct Answer: C
What is the maximum power level for AP in any regularity domain?
Correct Answer: A
You must resolve an issue in which an access point is not joining a controller. Which command can help you to troubleshoot the issue?
A. debug enable ap-name from the AP
B. debug capwap events enable from the AP
C. debug enable ap-name from the controller
D. debug capwap events enable from the controller
Correct Answer: D
Which command is used to upgrade the operational code when upgrading a Cisco IOS-XE WLC?
A. software install source switch
B. software install file path:code.bin
C. software tftp://code.bin flash:/code.bin
D. software expand running
Correct Answer: B
Refer to the exhibit. An engineer is implementing a new network design that includes a port channel to connect an MDS core switch and an VPN switch. Which two Fibre Channel port types must be used to create the Fibre Channel port channel? (Choose two.)
A. NL Port
B. F Port
C. NP Port
D. E Port
E. N Port
F. TL Port
Correct Answer: BC
What WCS report displays hardware type, software distribution, and CDP information?
A. Device > AP Profile Status
B. Device > AP Summary
C. Network Summary > Executive Summary
D. Device > Inventory
E. Network Summary > 802.11n Summary
Correct Answer: D
When an AP, in its default configuration mode, connects to a Cisco WLC, which methods are available for remote management access to an AP?
A. SSL and SSH are available only after configuration by a Cisco WLC version 7.0.
B. SSH only
C. HTTPS, and SSH
D. SSH and Telnet
E. SSH and Telnet are available only after configuration by a Cisco WLC version 7.0.
Correct Answer: D
In Wireless LAN Controller release 5.0 and later, the controller supports the use of Telnet or Secure Shell (SSH) protocols to troubleshoot lightweight access points. You can use these protocols in order to make debugging easier, especially when the access point is unable to connect to the controller. You can configure Telnet and SSH support only through the controller CLI. http://www.cisco.com/c/en/us/support/docs/wireless/aironet-1200-series/70278-lap-faq.html
Which three Cisco Unified Wireless Network capabilities use information that is provided by Radio Resource Management neighbor messages? (Choose three.)
A. aggressive load balancing
B. dynamic channel assignment
C. hybrid remote edge access point
D. intercontroller mobility (that is, mobility groups)
E. over-the-air provisioning
F. rogue AP classification
Correct Answer: BEF
First we should learn how the RRM works:
1) Controllers (whose APs need to have RF configuration computed as a single group) are provisioned with the same RF Group Name. An RF Group Name is an ASCII string each AP will use to determine if the other APs they hear are a part
of the same system. (RF groups are groups of controllers that share the same RF group name and whose APs can hear the neighbor messages of each other)
2) APs periodically send out Neighbor Messages, sharing information about themselves, their controllers, and their RF Group Name. These neighbor messages can then be authenticated by other APs sharing the same RF Group Name.
3) APs that can hear these Neighbor Messages and authenticate them based on the shared RF Group Name, pass this information (consisting primarily of controller IP address and information on the AP transmitting the neighbor message)
up to the controllers to which they are connected.
4) The controllers, now understanding which other controllers are to be a part of the RF Group, then form a logical group to share this RF information and subsequently elect a group leader.
5) Equipped with information detailing the RF environment for every AP in the RF Group, a series of RRM algorithms are used to optimize AP configurations. Information from Radio Resource Management (RRM) monitors the radio
resources, performs dynamic channel assignments, provides detection and avoidance of interference, and provides the dynamic transmit power control (TPC).
The RRM neighbor message contains the following information:
Radio Identifier: If the AP had multiple radios, this field identifies the radio used to transmit the message.
Group ID: The 16-bit value and controller MAC address. This information is used to detect rogue access points. The access points will then check the beacon/probe-response frames in neighboring access point messages to see if they
contain an authentication information element (IE) that matches that of the RF group. If the check is successful, the frames are authenticated. Otherwise, the authorized access point reports the neighboring access point as a rogue, records its
BSSID in a rogue table, and sends the table to the controller.
WLC IP Address: RF group leader\’s management IP address. This address is discovered through Over-the-Air Provisioning (OTAP)
AP Channel: The native channel that the AP uses to service clients.
Neighbor Message Channel: The channel the message is sent on.
Power: The power level at which the message is transmitted.
Antenna Pattern: The antenna pattern currently in use
Dynamic channel assignment is used to dynamically allocate access point channel assignments to avoid conflict and to increase capacity and performance. For example, two overlapping channels in the 802.11g band, such as 1 and 2, cannot
both simultaneously use 54 Mbps. By effectively reassigning channels, the controller keeps adjacent channels separated, thereby avoiding this problem.
Over-the-Air Provisioning (OTAP) is a method for APs to discover the management IP of a controller over the air.
A rogue AP is an AP that is unknown to the controller.
When a wireless client is authenticated in a controller-based wireless network, which three pieces of source identification information can be used by the controller for an Access-Request message that is sent to an external RADIUS server? (Choose three.)
A. wireless client IP address
B. controller IP address
C. AP IP address
D. wireless client MAC address
E. controller MAC address
F. AP MAC address
Correct Answer: BEF
From the Call Station ID Type drop-down list, choose IP Address, System MAC Address, or AP MAC Address to specify whether the IP address, system MAC address, or AP MAC address of the originator will be sent to the RADIUS server in the Access-Request message. http://www.cisco.com/c/en/us/td/docs/wireless/controller/7- 0/configuration/guide/c70/c70sol.html#wp1389032 (Step 3)
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