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2021 Jul ccna wireless 640-722 iuwne quick reference:
Q51. - (Topic 4)
Which EAP protocol requires a certificate only on the server side?
A. EAP-PEAP
B. EAP-FAST
C. EAP-TLS
D. EAP-SSL
Answer: A
Explanation:
PEAP is not an encryption protocol; as with other EAP types it only authenticates a client into a network. PEAP uses only server-side public key certificates to authenticate clients by creating an encrypted SSL/TLS tunnel between the client and the authentication server, which protects the ensuing exchange of authentication information from casual inspection.
Reference: http://wiki.freeradius.org/protocol/EAP-PEAP
Q52. - (Topic 6)
Which description best describes upfade in a multipath environment?
A. In this situation, multiple signal paths are not sent at exactly the same time. The receiver receives a positive crest on the primary signal and a negative crest on the secondary signal.
B. In this situation, the multiple signal paths are distorted and difficult to understand.
C. In this situation, the multiple signal paths are weaker than they should be because the signals are out of phase with each other.
D. In this situation, the signal is stronger than it should be because multiple signal paths are received twice at exactly the same time, which results in the multiple signals being in-phase.
Answer: D
Explanation:
If a signal is received twice at exactly the same time, the secondary wave adds its power to the primary wave, so the receiver gets twice the positive energy (positive crest) at the same instant, then twice the negative energy (negative crest) at the same instant. The result is that both waves add up to twice the amplitude (energy) of a single wave, and both signals are said to be in phase (both signals are said to have an angle of 0 degrees). This rare condition is called upfade. If the second signal negative energy (negative crest) reaches the receiver just when the first signal positive energy (positive crest) also reaches the receiver, both signals can cancel each other, resulting in no signal at all (this is the principle used in noise cancellation headsets).
Reference: CCNA Wireless (640-722 IUWNE) Quick Reference Guide page 10
Q53. - (Topic 5)
Refer to the exhibit.
Which two menus do you click to determine the reachability status of a controller from Cisco WCS? (Choose two.)
A. Monitor
B. Reports
C. Configure
D. Services
E. Administration
F. Tools
Answer: A,C
Explanation:
Monitor Menu
The Monitor menu provides you with a top-level description of the devices on your network.
You can monitor your network, maps, Google Earth maps, various devices (controllers, access points, clients, tags, chokepoints, Wi-Fi TDOA receivers), RRM, alarms, and events.
Configure Menu.
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.
Topic 6, Conduct Basic WLAN Maintenance and Troubleshooting
198. - (Topic 6)
Which CLI command is used on a Cisco WLC to troubleshoot mobility, rogue detection, and load-balancing events?
A. debug dot11
B. debug capwap all
C. show dot11 details
D. show capwap details
Answer: A
Explanation:
ebug dot11
To configure the debugging of 802.11 events, use the debug dot11 command.
debug dot11 { all | load-balancing | management | mobile | nmsp | probe | rldp | rogue
| state} { enable | disable}
Syntax Description
all
Configures the debugging of all 802.11 messages.
load-balancing
Configures the debugging of 802.11 load balancing events.
management
Configures the debugging of 802.11 MAC management messages.
mobile
Configures the debugging of 802.11 mobile events.
nmsp
Configures the debugging of the 802.11 NMSP interface events.
probe
Configures the debugging of probe.
rldp
Configures the debugging of 802.11 Rogue Location Discovery.
rogue
Configures the debugging of 802.11 rogue events.
state
Configures the debugging of 802.11 mobile state transitions.
enable
Enables the 802.11 debugging.
disable
Disables the 802.11 debugging.
Reference: http://www.cisco.com/c/en/us/td/docs/wireless/controller/7-3/command/reference/cr73/b_cr_7-3_chapter_010.html#wp3619872221
Q54. DRAG DROP - (Topic 1)
Refer to the exhibit. Drag the MAC addresses on the left that will allow the wireless station Host A to send a frame through a controller based AP to the wired station Host B and drop them in the correct order on the right. Not all options are used.
Answer:
Q55. - (Topic 5)
Which two destinations can Cisco WCS administrators specify for a scheduled report? (Choose two.)
A. a file on the Cisco WCS
B. a specified email address
C. a specified World Wide Web server
D. a TFTP server
Answer: A,B
Explanation:
Reports are saved in either CSV or PDF format and are either saved to a file on WCS for
later download or e-mailed to a specific e-mail address.
The reporting types include the following:
. Current, which provides a snap shot of the data from the last polling cycle without continuously polling .
. Historical, which retrieves data from the device periodically and stores it in the WCS database .
. Trend, which generates a report using aggregated data. Data can be periodically collected based from devices on user-defined intervals, and a schedule can be established for report generation.
With WCS, you also have the ability to export any report that you can view, sort reports into logical groups, and archive for long-term storage.
Reference: http://www.cisco.com/c/en/us/td/docs/wireless/wcs/7-0/configuration/guide/WCS70cg/7_0reps.html
Most recent cisco ccna wireless iuwne 640-722:
Q56. DRAG DROP - (Topic 4)
Drag the appropriate EAP descriptions on the left and drop them in the correct sequence of events for PEAP on the right.
Answer:
Q57. - (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
Q58. - (Topic 6)
Which two factors must be considered when evaluating an RF interferer for severity? (Choose two.)
A. distance from the AP
B. dBm
C. the type of security crack being used
D. duty cycle
E. number of interfering IP stations in the cell
F. duplicate SSID
Answer: B,D
Explanation:
On controller code 7.0 and later, you can configure Event Driven RRM (EDRRM) from the Wireless > 802.11a/n [802.11b/g/n] > RRM > DCA page. Enabling EDRRM allows the controller to bypass the 600-second default interval for DCA and change an AP channel immediately if a disturbing non-802.11 interference is detected on the AP channel. You can set the sensitivity threshold to High (60), Medium (50), or Low (35). This threshold refers to the Air Quality index. CleanAir-capable APs (3500 and 3600 Series APs, with their CleanAir capable chipset) can detect and identify non-802.11 interferences and report them to the controller. These APs can report interferers when in local mode and monitor mode. Notice that the AP cannot report to the controller when in Spectrum Only Monitor Mode (SOMM). The controller uses the reported information to list non-802.11 interferers along with their zone of impact and severity and establish an Air Quality Index (AQI) from 100 (perfect) to 0 (network unusable). Notice that the logic of the global AQ index (higher is better) is exactly the opposite of the logic of the individual interferer severity index (higher is more severe, and therefore worse). The severity index is calculated individually by each detecting AP based on the power (signal strength), duty cycle (how often the device uses the air per second), and detected type of interferer. The louder an interferer device, the higher the duty cycle will mean a higher severity index for the reporting AP. The severity index is calculated for a specific device, without regard to what channels are being affected.
Reference: CCNA Wireless (640-722 IUWNE) Quick Reference Guide page 59
Q59. - (Topic 5)
When using Cisco WCS version 7.0, which two features are available for the client troubleshooting tool when a Cisco Compatible Extensions v5 wireless client gets connected? (Choose two.)
A. Request CleanAir reports from the client
B. Send text messages to the client
C. Aggregated Cisco ACS authentication client information
D. Request the client to ping the DHCP-supplied IP gateway
E. Display a summary of client event history
Answer: B,D
Explanation:
If Cisco Compatible Extension Version 5 clients are available, a Messaging tab as shown in figure appears. Use this tab to send an instant text message to the user of this client. From the Message Category drop-down list, choose a message and click Send.
Figure 11-20 Messaging Tab
Q60. - (Topic 4)
How many RADIUS servers can be configured globally and per WLAN on a Cisco WLC version 7.0?
A. 7 global; additional 1 per WLAN
B. 7 global; additional 3 per WLAN
C. 17 global; additional 1 per WLAN
D. 17 global; additional 3 per WLAN
E. 7 global; reuse of up to 1 maximum per WLAN
F. 17 global; reuse of up to 1 maximum per WLAN
G. 17 global; reuse of up to 3 maximum per WLAN
Answer: G
Explanation:
You can configure up to 17 RADIUS authentication and accounting servers each. For example, you may want to have one central RADIUS authentication server but several RADIUS accounting servers in different regions. If you configure multiple servers of the same type and the first one fails or becomes unreachable, the controller automatically tries the second one, then the third one if necessary, and so on.
Reference: http://www.cisco.com/c/en/us/td/docs/wireless/controller/7-0/configuration/guide/c70/c70sol.html