CWNP CWDP-302 Online Practice Questions and Exam Preparation

CWNP CWDP-302 Online Questions & Answers

• Question 41:

  You are testing a VoWLAN deployment, and your communication measurements show a certain amount of lost packets. What would be an acceptable packet error rate value to still provide acceptable call quality?

  A. There should be 0% error in a VoWLAN type of deployment
  B. No more than 1% PER max should be acceptable
  C. No more than 4% PER max should be acceptable
  D. No more than 8% PER max should be acceptable
  B. No more than 1% PER max should be acceptable

• Question 42:

  A wireless engineer from your company performed a site survey in an office building where a wireless network extension was needed. He reports that while performing a Layer 1 sweep near a meeting room full of people, he detected RF activity with a very low duty cycle. He is unsure how to interpret what he recorded to determine its impact on a future Wi-Fi network.

  What is true about this RF environment and its potential impact on the WLAN?

  A. The signal affects the entire spectrum and will render the wireless network unusable. It must be located and removed.
  B. The signal has a low duty cycle and should not be of major impact on the wireless network.
  C. The signal is alternating between peaks (high interference level) and valleys (low interference level). The network channel design must be built to avoid the affected peak frequencies.
  D. The signal is typical of a high radio card background noise. It shows that the card used for the Layer 1 sweep should be replaced and the Layer 1 sweep re-done.
  B. The signal has a low duty cycle and should not be of major impact on the wireless network.

• Question 43:

  When deploying long-distance 802.11 bridge links (10 miles / 16 km), what parameter may be critical for improving data flow by reducing retries caused by the long distances?

  A. The sequence control field value
  B. The acknowledgement timeout threshold
  C. The minimum transmit data rate value
  D. The CTS-to-self threshold
  B. The acknowledgement timeout threshold

• Question 44:

  One of your customers plans on providing wireless coverage to a warehouse facility. After performing an initial walkthrough, you collect the following information:

  The central part of the warehouse is between 400 and 600 feet (122 to 183 meters) from the warehouseswitches mounted on the walls. The warehouse storage is composed of metallic racks with varying inventory levels and contents, from electronics and plastic toys to food pallets and juice bottles. Workers need basic data coverage from their working location, and are not highly mobile. They usually work from one single aisle, and their laptop is on a cart with wheels. What would be your one recommendation to provide coverage to the central area of the warehouse?

  A. Equip workers laptops with a directional antenna and install APs less than 328 feet (100m) away from the switch.
  B. In this case, extend the cable length just beyond 328 feet (100 m) and position APs as close as possible to the central area of the warehouse.
  C. Position APs along the walls, and equip the APs with Yagi antennas to cover the central area.
  D. Install APs for client access in the central area and use a mesh backhaul link to connect to the DS.
  D. Install APs for client access in the central area and use a mesh backhaul link to connect to the DS.

• Question 45:

  Which one of the following is an essential metric to measure when performing a survey and design for VoIP across WLANs?

  A. Throughput rates above 50 Mbps
  B. Data rates above 100 Mbps
  C. Latency
  D. PoE provided to wireless handsets
  C. Latency

• Question 46:

  You desire to achieve a 450 Mbps MCS. What 802.11n features (from the numbered list below) are required?

  1.

  Frame aggregation

  2.

  Short GI

  3.

  40 MHz channels

  4.

  2 spatial streams

  5.

  3 spatial streams

  6.

  Transmit beamforming (TxBF)

  A. 2,3,2
  B. 1, 2, 3, 5
  C. 1, 2, 3, 4, 6
  D. 2,3,5
  D. 2,3,5

• Question 47:

  What statement is true of a WLAN design that supports Real-Time Location Services (RTLS) with 802.11 RFID asset tags?

  A. When passive tags are implemented, the AP density should be increased by 25% to make up for the shorter transmit range of passive tags as compared to active tags.
  B. Active RFID tags periodically transmit 802.11 beacon management frames that must be synchronized with the AP for proper location of the tagged asset.
  C. With passive tags, AP transmit gain should be increased to supply extra power for near- field coupling or backscatter modulation from the tag to the AP since the passive tag lacks an internal power source.
  D. Passive tags do not communicate directly with the WLAN infrastructure, but instead they rely on the tag reader to communicate tag information to the infrastructure's location tracking server/database.
  D. Passive tags do not communicate directly with the WLAN infrastructure, but instead they rely on the tag reader to communicate tag information to the infrastructure's location tracking server/database.

• Question 48:

  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
  D. EF

• Question 49:

  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
  C. Regulate the available bandwidth resources -- Access Category

• Question 50:

  What VoWiFi implementations frequently require multicast packet delivery support by the WLAN infrastructure?

  A. All VoWiFi implementations
  B. Push-to-Talk VoWiFi phones
  C. All VoWiFi soft phones
  D. All VoWiFi hard phones
  B. Push-to-Talk VoWiFi phones