NEW QUESTION 1
Which option is an enhancement of enabling WMM on an AP?

• A. All access classes use the same IEEE 802.11 sequence number.
• B. It disables U-APSD Power Save.
• C. Each access class has its own IEEE 802.11 sequence number.
• D. CAC is reserved for voice calls only.

Answer: C

NEW QUESTION 2
Which three options are benefits of U-APSD? (Choose three.)

• A. optimized power-save mode periods
• B. increased call capacity
• C. bandwidth reservation
• D. synchronization of the transmission and reception of voice frames
• E. efficient roaming
• F. priority bandwidth and polling

Answer: ABD

Explanation: Unscheduled automatic power-save delivery (U-APSD) is a feature that has two key benefits:
The primary benefit of U-APSD is that it allows the voice client to synchronize the transmission and reception of voice frames with the AP, thereby allowing the client to go into power-save mode between the
transmission/reception of each voice frame tuple. The WLAN client frame transmission in the access
categories supporting U-APSD triggers the AP to send any data frames queued for that WLAN client in that AC. A U-APSD client remains listening to the AP until it receives a frame from the AP with an end-of-service period (EOSP) bit set. This tells the client that it can now go back into its power-save mode. This triggering mechanism is considered a more efficient use of client power than the regular listening for beacons method, at a period controlled by the delivery traffic indication map (DTIM) interval, because the latency and jitter requirements of voice are such that a WVoIP client would either not be in power-save mode during a call, resulting in reduced talk times, or would use a short DTIM interval, resulting in reduced standby times. The
use of U-APSD allows the use of long DTIM intervals to maximize standby time without sacrificing call quality. The U-APSD feature can be applied individually across access categories, allowing U-APSD can be applied to the voice ACs in the AP, but the other ACs still use the standard power save feature.
The secondary benefit of this feature is increased call capacity. The coupling of transmission buffered data frames from the AP with the triggering data frame from the WLAN client allows the frames from the AP to be sent without the accompanying interframe spacing and random backoff, thereby reducing the contention experience by call.

NEW QUESTION 3
Drag and drop the relative AP densities for data, voice and location services from the left to the appropriate categories on the right.

Answer:

Explanation:

NEW QUESTION 4
After installation of a new data-only wireless network, an engineer found that RRM has set all of the APs to a power level of 1.
Which option describes the reason for this?

• A. APs are too far apart for the set data rates.
• B. EORRM is enabled
• C. High co-channel interference exists.
• D. DTPC value is set too high.

Answer: A

NEW QUESTION 5
What are two advantages of conducting an active survey versus a passive survey when verifying RF coverage? (Choose two.)

• A. verifies packet loss
• B. verifies roaming
• C. verifies SNR
• D. verifies signal level
• E. verifies interferers

Answer: AB

NEW QUESTION 6
You are using Ekahau Site Survey to plan a WLAN. Which image format is scaled automatically during the map import process? (Choose two)

• A. JPEG
• B. PNG
• C. PDF
• D. DWG

Answer: AB

NEW QUESTION 7
A network engineer is designing a high-density wireless network. To optimize client performance and avoid interference. Which configuration must the engineer use?

• A. Deploy APs near each other for 2.4-GHz,coverage ,and disable 5-GHz radios for some APs.
• B. Deploy APs near each other for 2.4-GHz,coverage ,and disable 5-GHz radios for all APs.
• C. Deploy APs near each other for 5-GHz,coverage ,and disable 2.4-GHz radios for some APs.
• D. Deploy APs near each other for 5-GHz,coverage ,and enable 2.4-GHz radios for all APs.

Answer: A

NEW QUESTION 8
Drag and drop the WMM designations from the left onto the correct 802.1P priority queues on the right.

Answer:

Explanation:

NEW QUESTION 9
Cisco 7925G phones are experiencing intermittent connectivity issues. The wireless survey reveals that the facility has no current coverage holes. The radios on the 2.4GHz channel have all been statically set to power level 1. Which two reasons could explain why the phones are having issues on this wireless network? (Choose two.)

• A. The phones are experiencing excessive co-channel interference.
• B. The phones only operate on the 2.4 GHz band when the power level is above 25 mW.
• C. The phones are not transmitting at the same power levels as the access points.
• D. The phones are experiencing delays of less than 30 ms within their coverage cell.
• E. The phones are receiving greater than -67 dBm RSSI on the 2.4 GHz band.

Answer: BC

NEW QUESTION 10
What is the optimal distance between APs for location services without considering the physical environment?

• A. 10 to 25 feet
• B. 90 to 120 feet
• C. 50 to 70 feet
• D. 80 to 100 feet

Answer: C

NEW QUESTION 11
You are designing a wireless network that contains many different types of wireless clients. How do you conduct a survey to ensure a consistent experience for all of the wireless clients?

• A. by using the client that has the highest RF properties
• B. by using the client that is used most by the company
• C. by using a client of every different type
• D. by using the client that is used least by the company

Answer: B

NEW QUESTION 12
An engineer has performed a post-installation site survey using Ekahau Site Survey with a recommended adapter.
Which two metrics can be different between the adapter used to survey and the client adapter? (Choose two.)

• A. SNR
• B. data rate
• C. DFS
• D. channel overlap

Answer: AB

Explanation: You must take note on what adapter was used in a site survey. The adapter should have similar characteristics to the adapters on the devices that are actually to be used in the wireless network. You should always verify what type of client adapter was used throughout the survey. A client adapter with a better receiver sensitivity and stronger antenna does not provide accurate results to compare against clients that are actually used in production.

NEW QUESTION 13
You must redesign an existing wireless network that spans multiple floors to support location-based services. Where do you install the access points?

• A. in the elevators
• B. in the perimeter of each floor
• C. in the stairwells of each floor
• D. in the center of each floor

Answer: D

NEW QUESTION 14
A wireless engineer is configuring VoWLAN on a WLC.
Which configuration should be implemented on the router or switch that is connected to the WLC?

• A. The interface on the switch or router should trust the CoS settings of the WLC.
• B. The interface on the WLC should mark all packets as EF.
• C. The interface on the switch or router should strip all CoS markings on the IEEE 802.11 header.
• D. The interface must be configured as a Layer 3 interface.

Answer: A

Explanation: We recommend that the QoS policy on the router/switch interfaces connected to the WLC be set to trust the CoS settings of the WLC. This means that the wired network responds to the CoS values controlled by the QoS policy set on the WLC. The WLC does not enforce any policy that changes the WLAN client DSCP values. The WLC policy effects will only be seen in the CoS values associated with the WLAN client traffic.
If the routers and switches connecting to the WLC are set to trust DSCP, then a DSCP policy must be created and maintained on those router and switch interfaces--in addition to the policies applied on the WLC. For more information on WLAN QoS and traffic classification, refer to the Chapter 3, "Voice over WLAN Radio Frequency Design”.
https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Mobility/vowlan/41dg/vowlan41dg-book/ vowlan_ch8.html

NEW QUESTION 15
A network installation on the site with ID 331372269 has been determined to be potentially hazardous to install. Which regulatory body must be consulted to ensure safety during the installation?

• A. FCC
• B. HIPPA
• C. PCI
• D. OSHA

Answer: D

NEW QUESTION 16
You have a customer that is building a new campus of four 3-story buildings that you have just completed the site survey for. The customer is interested in the mount of rack space they will need to allocate in either the building MDF or in the data center for controllers. Each building is going to require 75 APs to support voice and datA. How should the controllers be deployed to provide the least number of controllers, the highest redundancy, and the easiest management?

• A. Use the centralized deployment method in the data center with the N + N redundancy method.
• B. Use the centralized deployment method in the data center with the N + 1 redundancy method
• C. Use the centralized deployment method in the data center with the 1 + 1 redundancy method and client SSO.
• D. Use the distributed deployment method in each building MDF with the N + 1 redundancy method.
• E. Use the distributed deployment method in each building MDF with the N + N + 1 redundancy method.
• F. Use the distributed deployment method in each building MDF with the N + N redundancy method.

Answer: B

NEW QUESTION 17
When a post-installation audit is performed using the Ekahau Survey tool, which two steps are associated with the passive portion of the audit? (Choose two.)

• A. Check to see if the signal levels on other access points that are heard on the same channel are at least 19 dBm weaker than the access point that you are next to
• B. Survey by SSID to ensure that smooth roaming is taking place
• C. Verify that the real-world network traffic (for example, physical data rate, packet loss, etc.) meets user requirements
• D. When you have completed the post-installation surveys, compare them to the surveys that were performed before the installatio
• E. They should look nearly identical
• F. Verify that user applications are running smoothly over the wireless network

Answer: AD