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Exam Certified Wireless Design Professional
Number CWDP-302
File Name CWNP.certkey.CWDP-302.2018-06-29.1e.62q.vcex
Size 55 Kb
Posted July 24, 2018
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Demo Questions

Question 1
Given: The 802.11ac APs you have selected for your public access deployment support many of the PHY and MAC enhancements offered by the 802.11n and 802.11ac amendments. The AP is configured for a single-band (2.4 GHz) and only allows 20 MHz channels. The WLAN radio in the AP is a 3x3 802.11n chip that supports two spatial streams.
What is the maximum MCS rate that could be supported by this AP?

  • A: 54 Mbps
  • B: 65 Mbps
  • C: 108 Mbps
  • D: 144 Mbps



Question 2
As an implementation engineer, you have just received initial design specs from a network designer for your dual-band 802.11n deployment. The network design documents prescribe the following data rate configuration for the 2.4 GHz radio:
Basic Rates — 5.5, 6, 11, 12 Mbps 
Supported Rates — 9, 18, 24, 36, 48, and 54 Mbps as well as MCS 0-15 
What will result from this design strategy?

  • A: By disabling support for 1 and 2 Mbps while allowing 5.5 and 11 Mbps, the network will force 802.11b clients to use these higher data rates.
  • B: Protection mechanisms will always be in use on this network to support 5.5 and 11 Mbps as basic rates.
  • C: HR/DSSS (802.11b) stations will not be able to associate to the service set.
  • D: This configuration violates the IEEE specification that defines 6, 12, and 24 Mbps as mandatory data rates for 802.11g/n.



Question 3
Given: As the wireless network administrator for XYZ Company, you are planning to upgrade your aging wireless network infrastructure, as well as some clients, to support 802.11ac. In your research, you have discovered that your new wireless client devices and infrastructure are 802.11ac, WMM, and WMM-PS certified by the Wi-Fi Alliance. Some of your existing client devices are 802.11a/b/g devices that do not support WMM.
Given this information, what scenario is possible when your company's employees begin using both types of client devices on the new WLAN?

  • A: All WMM-PS certified client devices will be prevented from utilizing WMM-PS features until all stations in use on the wireless medium are WMM-PS certified.
  • B: The WLAN infrastructure will set the dozing times of the WMM-PS certified client devices based upon their WMM access category, while the non-WMM-PS client devices will continue to use PS-Poll frames.
  • C: Performance and battery life will be inconsistent between WMM-PS and non-WMM-PS client devices when used with applications that support WMM-PS.
  • D: WMM-PS enabled APs will allow both WMM-PS and non-WMM-PS stations to use the trigger-and-delivery mechanism, but WMM-PS stations will get priority.



Question 4
You desire to achieve a 450 Mbps MCS. What 802.11n features (from the numbered list below) are required? 
Frame aggregation 
Short GI 
40 MHz channels 
2 spatial streams 
3 spatial streams 
Transmit beamforming (TxBF)

  • A: 2, 3, 2
  • B: 1, 2, 3, 5
  • C: 1, 2, 3, 4, 6
  • D: 2, 3, 5



Question 5
You are tasked with designing the WLAN to accommodate certain high density areas on your university campus where users frequently come and go. With a limited DHCP pool size (subnet mask = 255.255.252.0) for this WLAN subnet, you want to ensure that your DHCP addresses are used efficiently and are not exhausted, which would prevent new client Layer 3 connections. The DHCP server is a Windows Server 2012 R2 machine. Your design task is to determine the best configuration to allow as many users as possible while avoiding WLAN service interruptions and also to use the available addresses as efficiently as possible. 
What setting would be most effective at achieving this design task?

  • A: Set the RTS threshold to 2346 bytes
  • B: Set the inactive wireless client timeout (client age-out) to 5 minutes
  • C: Set the maximum client limit per radio to 64
  • D: Set the DHCP lease for this pool to 20 minutes



Question 6
What is the DSCP Per Hop Behavior equivalent classification of the 802.11 AC_VO priority level?

  • A: AF31
  • B: CS3
  • C: VO
  • D: EF



Question 7
You are working on a VoWLAN design with your customer’s wired networking team. How many distinct priority levels do you expect for the voice applications?

  • A: 1 priority level, but 2 queues (one for uplink traffic, one for downlink traffic)
  • B: 1 priority level per client and AP pair, so the total number depends on the expected number of clients
  • C: 1 priority level for voice RTP, 1 priority level for voice control and RTCP
  • D: 1 priority level for VoWLAN client traffic, 1 priority level for wired VoIP client traffic



Question 8
ABC Company has a WLAN controller with 10 controller-based APs; the Voice SSID is configured for centralized data forwarding. Each AP is connected to an access port on a layer-2 Ethernet switch. Each layer-2 switch is uplinked to a single layer-3 core Ethernet switch. The WLAN controller is connected directly to the layer-3 core Ethernet switch. Layer-3 tunnels are created between all controller-based APs and the WLAN controller. A voice server is connected to the layer-3 Ethernet switch. 
When a voice-enabled QoS STA sends an IP data packet to a voice server in this scenario, the DSCP value carried in the STA's IP data packet gets mapped to what and by which device?

  • A: The DSCP value is mapped to an IEEE 802.1Q priority tag value by the WLAN controller.
  • B: The DSCP value is mapped to the DSCP value in the encapsulating IP header by the layer-3 switch.
  • C: The DSCP value is mapped to an IEEE 802.1p (802.1D-2004) UP value by the access point.
  • D: The DSCP value is mapped to an IEEE 802.1Q VLAN tag by the access point.



Question 9
Given: For this fill-in the blank question, each answer option contains an answer for the first and second blanks, separated by a dash “—”. Choose the answer option that correctly fills in both blanks in the following sentence.
A WLAN may use 802.11 admission control to ________, and admission control requirements are configured separately for each ________.

  • A: Block stations with inadequate security parameters — SSID
  • B: Identify voice-enabled wireless devices — AP radio (that is, 2.4 GHz or 5 GHz)
  • C: Regulate the available bandwidth resources — Access Category
  • D: Mark ingress and egress frames with priority values — TCP/IP port



Question 10
In a large enterprise (5000+ wireless users), by what would NOT be a recommended method by which IP addresses and VLANs are assigned to different clients associated to the same AP?

  • A: Each SSID is mapped to a static VLAN assignment
  • B: Upstream AAA servers dynamically assign VLANs to each user or group profile
  • C: Radio signal metrics (RSSI, SNR, etc.) of WLAN clients are triangulated for location-based VLAN assignment during association
  • D: Multiple VLAN pools are designated for an SSID and user IP addresses are selected in a round-robin fashion from the associated pools









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