Share your CCNA Wireless Experience

A FlexConnect AP that is doing local authentication and local switching has lost its connection to its WLC because of a WAN faillure. What is the name of the operating mode in this case and until the WAN connection is restablished ?

A. Autonomous mode
B. Local MAC, also called Split MAC mode
C. Standalone mode
D. Central mode
E. Local mode
F. Connected mode
C

What is not an option in FlexConnect mode? (choose two)

A. Local authentication, local switching
B. Local authentication, central switching
C. Local switching, central authentication
D. Central authentication, central switching
E. Central authentication, local switching
F. Central switching, local authentication
B D (central switching is wrong)

Some branche sites require local switching in Flexconnect mode. But the rest of the remote sites does not have this requirement. All sites should have identical SSIDs and are controlled by the same controller.

How do you achieve this goal ?

A. Configure the APs for local switching in FlexConnect mode, the others that do not need local switching in Local mode. Then assign them all the SSIDs.

B. Create an AP group and assign the group to all needed SSIDs, then put all APs in that group

C. For each SSID create a copy of it with the same name but de-select the option for FlexConnect local switching in advanced tab in one of them, this will allow central switching. Create an AP group and choose which APs become which version of the SSID

C. For each SSID create a copy of it with a different name but de-select the option for FlexConnect local switching in advanced tab in one of them, this will allow central switching. Create an AP group and choose which APs become which SSID

Some branche sites require local switching in Flexconnect mode. But the rest of the remote sites does not have this requirement. All sites should have identical SSIDs and are controlled by the same controller.

How do you achieve this goal ?

A. Configure the APs for local switching in FlexConnect mode, the others that do not need local switching in Local mode. Then assign them all the SSIDs.

B. Create an AP group and assign the group to all needed SSIDs, then put all APs in that group

C. For each SSID create a copy of it with the same name but de-select the option for FlexConnect local switching in advanced tab in one of them, this will allow central switching. Create an AP group and choose which APs become which version of the SSID

D. For each SSID create a copy of it with a different name but de-select the option for FlexConnect local switching in advanced tab in one of them, this will allow central switching. Create an AP group and choose which APs become which SSID

Choose one !

maybe A

I trink IT is C

lollus September 8th, 2017
What is not an option in FlexConnect mode? (choose two)
A. Local authentication, local switching
B. Local authentication, central switching
C. Local switching, central authentication
D. Central authentication, central switching
E. Central authentication, local switching
F. Central switching, local authentication

B D (central switching is wrong)
»»»»»»»»»»»»»»»»»»»»»»»»»»»»»»»»

No, it is B F

If you do local authentication, why senden trafic to the controller?

Some branche sites require local switching in Flexconnect mode. But the rest of the remote sites does not have this requirement. All sites should have identical SSIDs and are controlled by the same controller.
How do you achieve this goal ?
A. Configure the APs for local switching in FlexConnect mode, the others that do not need local switching in Local mode. Then assign them all the SSIDs.
B. Create an AP group and assign the group to all needed SSIDs, then put all APs in that group
C. For each SSID create a copy of it with the same name but de-select the option for FlexConnect local switching in advanced tab in one of them, this will allow central switching. Create an AP group and choose which APs become which version of the SSID
D. For each SSID create a copy of it with a different name but de-select the option for FlexConnect local switching in advanced tab in one of them, this will allow central switching. Create an AP group and choose which APs become which SSID

Answer C

Right

What are not the advantages of using Flexconnect groups in WLC? (choose three)

Flexconnect groups allows sharing of and allow:

A. PMK fast roaming keys
B. Local/Backup Radius Servers IP/Keys
C. AAA-Backup for central switching
D. Local EAP authentication
E. AAA-Override for local switching
F. Smart image upgrade
G. CCMK group keys
H. Central/Backup Radius Servers IP/Keys

Choose which is not a configurable User Access Mode on a WLC controller from the following:

A. ReadWrite
B. LobbyAdmin
C. Administrator
D. ReadOnly

Choose one !

Choose which is not a configurable User Access Mode on a WLC controller from the following:
A. ReadWrite
B. LobbyAdmin
C. Administrator
D. ReadOnly
A ?

C. Administrator

@Nomade Lollus ,excuse all question are new of ccna wireless ? , because the last dump does not appear ,and never studed nothing about DFS (Dynamic Frequency Selection) .

@Raticulin no even if there is a question about dfs…

I think there is some errors in 437Q dumps….

QUESTION 75 (in 437Q pdf)

What does the current European Telecommunications Standards Institute rule state is the 2.4-GHz maximum transmitter output power for point-to-point installations?

A. 16 dBm
B. 17 dBm
C. 20 dBm
D. 30 dBm
E. 36 dBm

Answer: B

but this is of course wrong. It is C

There exists two EIRP power limits for the 2.4 GHz band, one for 802.11b rates with CCK modulation (1, 2, 5.5 and 11 Mbps) and one for 802.11g/n rates with OFDM modulation. The limit is set to 20 dBm (100 mW) for OFDM and 18 dBm (63 mW) for CCK.

The spectral power limitation of 10 dBm/MHz (10 mW/MHz) causes the lower power limit for 802.11b. As the spectral mask of the CCK modulation looks more like a sombrero, we see a high spectral power per MHz at the center and a lower one at the edges. So if you don’t lower the Tx power generally to 18 dBm, you exceed the spectral power limitation at the center of a 802.11b 20 MHz channel. For OFDM, the spectral mask looks more like a rectangular, so the power is nearly distributed equally, with an idealistic 7 dBm/MHz (5 mW/MHz) over a 20 MHz channel for example, and the maximum power limit of 20 dBm can be used.

https://wlan1nde.wordpress.com/2014/11/26/wlan-maximum-transmission-power-etsi/

So B is correct but only for 802.11b rates with CCK modulation ?

An engineer is troubleshooting why wireless clients have not been able to connect to the network. Where would an engineer verify the total number of excluded clients in the last day?

A. Security > Miscellaneous
B. Security > Rogues
C. Alarms
D. Events
E. Clients > Troubleshoot
F. Access Points
G. Monitor > Summary page, under Client Summary

Choose one !

@nomade A

Someone who took the exam this month?. New questions about this exam?

@Lollus, no this can not be, it is G.

There is no menu Security > Miscellaneous in WLC at least not from 8.0 and up.

This question is in 437Q and the answer is outdated or simply wrong.

This question is in 437Q and the answer is always the same on internet

In a network with a deployed Cisco WLC, which two entities must be configured with the shared secret key for 802.1X authentication? (Choose two.)

A. WLC
B. RADIUS server
C. AP
D. supplicant
E. wireless client

Answer: A + B

—————————————————-

I do not even understand the question. If the client does not know the PSK, what is it used for then ?

And in the WLC, when you configure the authentication for a WLAN, you have to choose between 802.11X or PSK but not both.

And if one strores the PSK in the Radius, it is not anymore a preshared-key or i am wrong ?

from cisco 8.1 reference

PSK—When you choose PSK (also known as WPA preshared key or WPA passphrase), you need to configure a preshared key (or a passphrase). This key is used as the pairwise master key (PMK) between the clients and the authentication server.

@Nomade
This is not asking about the PSK for wireless clients. When configuring a RADIUS server for AAA, the WLC and RADIUS servers must be configured with a shared secret key (Security – AAA – Radius – Authentication – New). This is used for some encryption between the two (passwords only are encrypted) and to ensure the WLC is speaking to the correct RADIUS server.

@nomade: it is about something else, this is to allow communication between radius server and wlc…otherwise any controller would be able to use any radius server..

ah ok, i have confused things :-) Thanks

Help me please :
What are the channels you need to avoid not to have interference with DFS channels? (Choose 3)
A. 52
B. 136
C. 124
D. 161
Correct Answer: BCD

But book say “The FCC requires one exception in the U-NII-2 and U-NII-2 Extended bands” ,it should be A,B,C , because the 161 band is U-NII-3

@Raticulin
Correct, channels 52 – 140 are DFS-affected channels. Should be ABC.

it depends where you are !

if you are in USA (the default in the questions, when nothing else indicated), ABC should be correct.

if you are somewhere else, Europe for example, then ABC MUST be correct, because U-NII-3 is not allowed at all in Europe….

I have to do the exam Thursday, September 14, 2017.
Does anybody have any advice on how to get a few dumps to increase their ability to pass the exam?
Waiting for feedback, I greet everyone with affection and thank you in advance with affection.

Your customer has 20 sites each one in a different country. Between 5-20 APs are located per Site. The central office is in Germany. The customer has already planned to use a single Cisco WLC and Flexconnect on all APs.

What is NOT correct in this situation: (choose one)

A. Multiple-country support that enables you to manage access points in various countries from a single Cisco WLC is not available. The customer needs to install a WLC per Regulatory domain.

B. You can configure up to 20 country codes for each Cisco WLC. This multiple-country support enables you to manage access points in various countries from a single Cisco WLC.

C. When multiple countries are configured and the radio resource management (RRM) auto-RF feature is enabled, the auto-RF feature is limited to only the channels that are legal in all configured countries and to the lowest power level common to all configured countries. The access points are always able to use all legal frequencies but uncommon channels can only be assigned manually.

D. The access point can only operate on the channels for the countries that they are designed for

E. When multiple countries are configured, the 802.11a/n/ac network is disabled for all the countries if any country does not support the 802.11a radio, or there are no common channels on the 802.11a radio.

Your customer has 10 sites each one in a different country. In each Site there is 10 APS. The central office is in Germany. The customer has already planned to use a single Cisco WLC and Flexconnect on all APs.

What is correct in this situation: (choose one)

A. You have to manually configure all 100 APs to use the correct country code
B. You can use Flexgroups to assign the correct country code to a group of APs for each site
C. You can use the RF-Group to assign the correct country code to a group of APs for each site
D. You can use the AP-Group to assign the correct country code to a group of APs for each site
E. You better install a WLC per country

Your customer has 10 sites each one in a different country. In each Site there is 10 APS. The central office is in Germany. The customer has already planned to use a single Cisco WLC and Flexconnect on all APs.

What is NOT correct in this situation: (choose one)

A. RF Profiles allows you to tune groups of APs that share a common coverage zone together and selectively change how RRM will operates the APs within that coverage zone. The coverage zone can be a floor, a building a country or any other space.

B. RF profiles are applied to all APs that belong to an AP group, where all APs in that group will have the same profile settings

C. You can not assign the same RF profile to more than one AP group

D. You could manually configure each of all 100 APs to use the correct country code and RRM settings instead of RF profiles and AP groups

Sorry but I don’t see any “common sense” other than marketing-driven setups. Cisco wanting the end customer to buy one controller per regulatory domain.

Let’s say I have APs in -B and APs in -E regulatory domains. Of course my WLC will allow both APs to join. But there’s no rational reason for them only being able to operate in channel/power settings common to both regulatory domains. It is simply a matter of not having this “intelligence” in the WLC, because there are use cases in which a company has one WLC (maybe redundant in HA) and has APs managed from it all over the world. So I’d expect the WLC to allow the -B APs to use the corresponding channel/power settings, and the same with -E APs. Why would a WLC limit this functionality?

Also, you’re wrong: the mentioned countries do not share the same regulatory domain. RU has -R reg. domain. So in my case I need both reg domains (-E and -R).

https://supportforums.cisco.com/t5/other-wireless-mobility-subjects/wlc-5508-multiple-country-codes-limitations/td-p/2357794

Help me please :

Which IEEE 802.11n client feature can combine the signal from multiple antennas and radio chains to improve SNR?
A. channel aggregation
B. spatial multiplexing
C. MAC layer efficiency
D. TxBF
E. MRC
F. MCS
Correct Answer: E

But i think that answer is D (TxBF) beasuse Transmit Beamforming With transmit beamforming (T×BF), the phase of the signal is altered as it is fed into each transmitting antenna so that the resulting signals will all arrive in phase at a specific receiver. This has a constructive effect, improving the signal quality and SNR.

Note: the question is about a client feature. TxBF and MRC are the same feature but seen one time from the AP perspective and one time from the client.

I have played a bit with the country code in WLC.

First I had it in US country and then changed to CN (china) which is very different, then compared the RRM values.

DCA Channel List: 36, 40, 44, 48, 52, 56, 60, 64, 149, 153, 157, 161
Note: In China only Channel 149, 153, 157, 161, 165 are allowed in the 5 Ghz Band. See:

https://en.wikipedia.org/wiki/U-NII

Maximum Power Level Assignment (-10 to 30 dBm) –> did not change, what ever country, I choosed.

But the best thing is the following: I have connected an AP to the WLC. The WLC thinks it is in China. Then I went to All APs > Details for CAP1602I and looked to the advenced tab of the AP to see in which regulatory domain it is. I found this:

Regulatory Domains: 802.11bg:-E 802.11a:-E
Country Code: CN (China)

The E means Europe. What the hell does this mean?

For me it means, it does not matter what you have in the WLC, the AP will apply at maximum the rules of the Regulatory Domains that is branded physically on the AP.

So, this is a joke, or did I miss something?

It means, if a company buy 200 APs and distribute them across the world, they will accept at maximum values that are valid for the country where they have been bought not where they are operating….

So, this is a joke, or did I miss something?

Correct; AP’s must be bought for the country in which they reside. Cisco makes universal AP’s (UX) that can operate based on geo-location.

“When multiple countries are configured and the RRM auto-RF feature is enabled, the RRM assigns the channels that are derived by performing a union of the allowed channels per the AP country code. The APs are assigned channels by the RRM based on their PID country code. APs are only allowed to use legal frequencies that match their PID country code. Ensure that your AP’s country code is legal in the country that it is deployed.

The access point can only operate on the channels for the countries that they are designed for.”

https://supportforums.cisco.com/t5/getting-started-with-wireless/wlc-and-ap-are-located-at-different-country/td-p/2390278

Thanks for the answer!

And what if the customer has already bought the controller and the APs and ask the CCNA wireless to install them in 10 differents countries?

Is there a plan B for this situation ?

@Nomade thanks, but someone can say if the question of @Highlander are the last exam CCNA wireless, please…

I Don t trink the last question from highlander are from the exam. But i know that higlander failed in the exam, so he knows the questions…

Good morning. Today I did a new test to understand this subject.

Configured the WLC for 10 countries. The branded Regulatory domain on the AP is E (europe). It is also shown on the advanced tab of the AP. Both APs joined the WLC. They have set the country code to Germany. In the menu of country code, one can select one of four other countries, Russia, China, Turkey, Germany….This list is pulled from the WLC, but I have selected 10 countries, why do I have only 4 on the AP?

Then I went to the WLC, and deselected the countries that I saw on the AP and let only the one that I was missing, like USA, Canada….

But then the APs refused to join the WLC. And now I understand why there are so many post out there about cisco APs not joining a WLC, and when you look to wireshark or other debug methods, you find only the DTLS Alert message but no explicit explanation of what is wrong.

It means when configuring a WLC for multiple countries, we will have to setup the APs one by one manually. The RF-Group with AP-Group method does not allow to change the AP country code centrally, it allow to define RRM settings at group level, this is something different.

I speed that i can help us with that manual,for config Configuring Multiple Country Codes tothe AP .

Note Disable both the 802.11a/n/ac and 802.11b/g/n networks to change the country code.

To configure country codes using the GUI, follow these steps:

1. Disable the 802.11a/n/ac and 802.11b/g/n networks as follows:

a. Click Wireless > 802.11a/n/ac > Network.

b. Unselect the 802.11a Network Status Enabled check box.

c. Click Apply to commit your changes.

d. Click Wireless > 802.11b/g/n > Network.

e. Unselect the 802.11b/g Network Status Enabled check box.

f. Click Apply to commit your changes.

2. Choose Wireless > Country to access the Country page.

3. Choose the check box for each country where your access points are installed.

4. If you selected more than one check box in Step 3, a message appears indicating that RRM channels and power levels are limited to common channels and power levels. Click OK to continue or Cancel to cancel the operation.

5. Click Apply to commit your changes.

6. Re-enable the 802.11a/n/ac and 802.11b/g/n networks if you did not re-enable them in Step 1.

7. Click Save Configuration to save your settings.

So, now you use my nickname to pollute the thread with your spam ?

In order to configure the devices for WLC failover (or redundancy), what do you NOT need to do: (choose one)

A. Configure the Fallback feature on WLC
B. Assign primary, secondary, and tertiary controllers for the lightweight AP
C. Configure mobility groups for the WLCs
D. Configure RF groups for the WLCs

In order to configure the devices for WLC failover (or redundancy), what do you NOT need to do: (choose one)

A. Configure the Fallback feature on WLC
B. Assign primary, secondary, and tertiary controllers for the lightweight AP
C. Configure mobility groups for the WLCs
D. Configure RF groups for the WLCs

Answer: A ?