[Free] 2018(Aug) Ensurepass Cisco 400-351 Dumps with VCE and PDF 1-10

August 12, 2018

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2018 Aug Cisco Official New Released 400-351
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CCIE Wireless (v3.1)

Question No: 1 – (Topic 1)

Prime Infrastructure will trigger alarms indicating that the Prime Infrastructure physical or virtual server is low on disk space. As the administrator, Which three actions can you take to increase disk space immediately upon receiving a Major alert ( 60 percent disk usage)? (Choose three.)

  1. Enable cron job on ade for disk clean up using $du -sh.

  2. Change the disk controller RAID.

  3. Conpacting the PI database using the ncs database purge command.

  4. Reduce the storage load on the local disk by setting up and using remote trackup reponitories.

  5. Reduce the length of time you store client association data and related events.

  6. Compacting the PI database using the ncs cleanup command.

Answer: D,E,F

Question No: 2 DRAG DROP – (Topic 1)

Drag and drop the events involved in a typical location tracking workflow from the left into the correct order on the right. Not all items are used.

Ensurepass 2018 PDF and VCE


Ensurepass 2018 PDF and VCE

Question No: 3 – (Topic 1)

For quot;Local modequot; APs, which multicast mode is recommended when configuring Media Stream on a Cisco WLC?

  1. Multicast-multicast

  2. Multicast-unicast

  3. Multicast-routing

  4. Multicast-direct

Answer: A Explanation:

http://www.cisco.com/c/en/us/td/docs/wireless/controller/8-0/configuration- guide/b_cg80/b_cg80_chapter_01111.html

Question No: 4 – (Topic 1)

Which statement about network automation and/or network orchestration is true?

  1. Automation focuses on coordinating multiple tasks at the same time.

  2. Orchestration and automation focus on a single task at a time.

  3. Orchestration focuses on coordinating multiple tasks at the same time.

  4. Automation and orchestration focus on coordinating multiple tasks at the same time.

Answer: C

Question No: 5 – (Topic 1)

You are designing a wireless network for a museum. One of their requirements is to track people inside the museum and push a notification into their tablet device as soon as they step in front of a painting with information about the artist and the painting. This information must be delivered in real time. You are using regular probe request-based tracking and during testing. You notice that although the tablet Is connected to the museum Wi-Fi network, the location is not updating in real time as you move. It can take almost 2 minutes for the location to be updated. Which option is the likely reason for this issue?

  1. Cisco MSE does not perform a new location calculation for certain elements if the resulting position is not at least 5 meters different than the previous location.

  2. Probe request-based tracking is bound to delay due to the broadcast type of traffic that is not acknowledged over the air and could be lost.

  3. CCXv4 S60 is disabled by default. You must enable CCXv4 S60, which is compatible with all Wi-Ficlients. This feature comes out location updates more frequently.

  4. Probe request-based tracking is device dependent. The tablet might not send a probe request if it is maintaining a good Wi-Fi signal, which can cause slower location updates.

Answer: C Explanation: From.

Ensurepass 2018 PDF and VCE

http://www.cisco.com/c/en/us/support/docs/wireless/context-aware-software/110836-cas- faq.html

Ensurepass 2018 PDF and VCE

http://www.cisco.com/c/en/us/td/docs/wireless/controller/7- 4/configuration/guides/consolidated/b_cg74_CONSOLIDATED/b_cg74_CONSOLIDATED_ chapter_010000111.html

Ensurepass 2018 PDF and VCE

http://www.cisco.com/c/en/us/td/docs/wireless/mse/3350/release/notes/mse7_0_220- 0.html#pgfId-1128560

Ensurepass 2018 PDF and VCE


Ensurepass 2018 PDF and VCE

Ensurepass 2018 PDF and VCE

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/3se/syste m_management/configuration_guide/b_sm_3se_3850_cg/b_sm_3se_3850_cg_chapter_01 010.pdf

Question No: 6 – (Topic 1)

Which four options are the HTTP methods supported by a reset API?


  2. GET

  3. PUT


  5. COPY

  6. POST

  7. SET

Answer: B,C,D,F

Question No: 7 – (Topic 1)

Which two statements about local profiling on a Cisco WLC running AireOS are true?(Choose two)

  1. Wired clients behind the workgroup bridge are not profiled and no policy action is taken.

  2. Profiling is performed only on IPv4 clients.

  3. Profiling is performed on IPv4 and IPv6 clients.

  4. Wired clients behind the workgroup bridge are profiled and a policy action is taken.

  5. When local profiling is enabled, RADIUS profiling is allowed.

Answer: A,B Explanation:

http://www.cisco.com/c/en/us/td/docs/wireless/controller/8-0/configuration- guide/b_cg80/b_cg80_chapter_0111101.html?bookSearch=true

Question No: 8 DRAG DROP – (Topic 1)

Drag and drop the channel lists on the left onto the corresponding UNII bands on the right, as applicable in the new-B Regulatory Domain for US. Not allow options are used.

Ensurepass 2018 PDF and VCE


Ensurepass 2018 PDF and VCE

Ensurepass 2018 PDF and VCE


http://www.cisco.com/c/en/us/td/docs/wireless/controller/technotes/8- 3/b_cisco_aironet_series_2800_3800_access_point_deployment_guide/b_cisco_aironet_s eries_2800_3800_access_point_deployment_guide_chapter_01011.pdf

Ensurepass 2018 PDF and VCE

Question No: 9 – (Topic 1)

Which statement about Wired Guest Access is true?

  1. The guest traffic can terminate on the foreign WLC, but egress interface must be defined on the guest SSID

  2. Wired Guest Access is not supported in the Cisco 5760 WLC

  3. The wired guest traffic terminates only on the anchor Cisco WLC

  4. The Cisco 5760 WLC supports Wired Guest Access only in conjunction with the converged access switches.

Answer: C Explanation:

http://www.cisco.com/c/en/us/support/docs/wireless/5700-series-wireless-lan- controllers/118810-technote-wlc-00.html

Question No: 10 – (Topic 1)

Which memchanism incorporates the channel capacity into the CAC determination and gives a much more accurate assessment of the current call carrying capacity of the AP?

  1. Static CAC.

  2. Reserved roaming bandwidth(%).

  3. Expedited bandwidth.

  4. Metrics collection.

  5. Load-based AC.

  6. Max RF bandwidth (%).

  7. Admission control.

Answer: E Explanation:

AP Call Capacity

A key part of the planning process for a VoWLAN deployment is to plan the number of simultaneous voice streams per AP. When planning the voice stream capacity of the AP, consider the following points:

Note: A call between two phones associated to the same AP counts as two active voice streams.

The actual number of voice streams a channel can support is highly dependent on a number of issues, including environmental factors and client compliance to WMM and the Cisco Compatible Extension specifications. Figure 9-11 shows the Cisco Compatible Extension specifications that are most beneficial to call quality and channel capacity.

Simulations indicate that a 5 GHz channel can support 14-18 calls. This means a coverage cell can include 20 APs, each operating on different channels, with each channel supporting 14 voice streams. The coverage cell can support 280 calls. The number of voice streams supported on a channel with 802.11b clients is 7; therefore, the coverage cell with three APs on the three non-overlapping channels supports 21 voice streams.

Figure 9-11 Cisco Compatible Extension VoWLAN Features

Ensurepass 2018 PDF and VCE

Call Admission Control (CAC) also benefits call quality and can create bandwidth reservation for E911 and roaming calls.

The 802.11e, WMM, and Cisco Compatible Extension specifications help balance and prevent the overloading of a cell with voice streams. CAC determines whether there is enough channel capacity to start a call; if not, the phone may scan for another channel. The primary benefit of U-ASPD is the preservation of WLAN client power by allowing the transmission of frames from the WLAN client to trigger the forwarding of client data frames that are being buffered at the AP for power saving purposes. The Neighbor List option provides the phone with a list that includes channel numbers and channel capacity of neighboring APs. This is done to improve call quality, provide faster roams, and improve battery life. http://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Mobility/emob41dg/emob41dg- wrapper/preface41.html

Understanding Static CAC

As mentioned previously, there are two types of Admissions Control. Static CAC is based on a percentage of the total Medium Times available and is measure in increments of 32 microseconds. In this section, we will cover how to configure Static and Load-Based CAC

and also how to debug it. http://www.cisco.com/c/en/us/td/docs/wireless/technology/vowlan/troubleshooting/vowlan


Load-Based CAC on the other hand is significantly more difficult to debug. LBCAC is dynamic with regard to the algorithm used to decrement Medium Times from the total that is available. LBCAC takes into consideration different metrics, such as load, Co-channel interference, SNR, etc. and will therefore yield different results when tested. From our experience, it is very difficult to yield consistent results as RF fluctuates and changes within the given environment. Results tend to vary from one cell area to another and even in cell areas that yield the same signal strength. http://www.cisco.com/c/en/us/td/docs/wireless/controller/4-1/configuration/guide/ccfig41/c 41ccfg.html

o enable video CAC for this radio band, check the Admission Control (ACM) check box. The default value is disabled.

n the Reserved Roaming Bandwidth field, enter the percentage of maximum allocated bandwidth reserved for roaming video clients. The controller reserves this much bandwidth from the maximum allocated bandwidth for roaming video clients.

Range: 0 to 25%

Default: 0%

in the Reserved Roaming Bandwidth field, enter the percentage of maximum allocated bandwidth reserved for roaming voice clients. The controller reserves this much bandwidth from the maximum allocated bandwidth for roaming voice clients.

Range: 0 to 25%

Default: 6%

To enable expedited bandwidth requests, check the Expedited Bandwidth check box. The default value is disabled.

To enable TSM, check the Metrics Collection check box. The default value is disabled. Traffic stream metrics (TSM) can be used to monitor and report issues with voice quality. In the Max RF Bandwidth field, enter the percentage of the maximum bandwidth allocated to clients for voice applications on this radio band. Once the client reaches the value specified, the access point rejects new calls on this radio band.

Range: 40 to 85%

Default: 75%

Ensurepass 2018 PDF and VCE

Ensurepass 2018 PDF and VCE

http://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Mobility/vowlan/41dg/vow lan41dg

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