CWNP CWNA CWNA-106 Questions & Answers

• Question 121:

  What factors are taken into account when calculating theLink Budget of a point-to-point outdoor WLAN bridge link?

  A. Operating frequency

  B. Transmit antenna gain

  C. Transmit power

  D. Antenna height

  Correct Answer: ABC

• Question 122:

  What answers correctly complete the following sentence?

  ____________ and ____________ carrier sensefunctions are used to determine if the wireless medium is busy. (Choose 2)

  A. Backoff

  B. Pseudo-random

  C. Virtual

  D. Active

  E. Physical

  F. Interframe

  G. Vector

  Correct Answer: CE

• Question 123:

  What term correctly completes the following sentence?

  802.11a/b/g used a mandatory 800ns guard interval. 802.11n introduced anoptional short 400ns guard interval. Guard intervals (GI) are necessary in OFDM to reduce the likelihood of interference between two consecutive ____________.

  A. Frames

  B. Packets

  C. Bits

  D. Symbols

  Correct Answer: D

• Question 124:

  What advantages does using predictive site survey modeling software offer over performinga manual site survey? (Choose 2)

  A. Predictive modeling software can predict the ideal access point location 100% of the time, whereas the results from manual surveyingare less reliable.

  B. Predictive modeling software makes it simple to assess multiple different AP locations and then adjust and display the AP's expected coverage pattern in almost real-time.

  C. Predictive modeling software provides more reliable data than manual surveys when fine-tuning and validating access point placement after the installation.

  D. The exact impact of interference sources from external networks can be more accurately measured when using predictive modeling software than with manual surveys.

  E. It takes less time to create an initial site survey for a large facility when using predictive modeling software than when performing a manual survey.

  Correct Answer: BE

• Question 125:

  To ease user complexity, your company has implemented a single SSID for all employees. However, the network administrator needs a way to control the network resources that can be accessed by each employee based on their department. What WLAN feature would allow the network administrator to accomplish this task?

  A. SNMP

  B. VRRP

  C. RBAC

  D. IPSec

  E. WIPS

  F. WPA2

  Correct Answer: C

• Question 126:

  What features were introduced in the IEEE 802.11h amendment in order to uphold regulatory requirements for 5 GHz operation? (Choose 2)

  A. 256-QAM

  B. DistributedCoordination Function (DCF)

  C. Phase Shift Keying (PSK)

  D. Transmit Power Control (TPC)

  E. Radio Resource Management (RRM)

  F. Dynamic Frequency Selection (DFS)

  Correct Answer: DF

• Question 127:

  What statement describes the authorization component of a AAA implementation?

  A. Verifying that a user is who he says he is

  B. Validating client device credentials against adatabase

  C. Logging the details of user network behavior in order to review it at a later time

  D. Granting access to specific network servicesaccording to a user profile

  E. Implementing a WIPS as a full-time monitoring solution to enforce policies

  Correct Answer: D

• Question 128:

  What statements describe industry practices for communication protocols between WLANcontrollers and controller-based APs? (Choose 2)

  A. All vendors use the same protocol so that APs will interoperate with WLAN controllers from other vendors.

  B. Some vendors use proprietary protocols, and some vendorsuse protocols based on public standards like RFCs.

  C. For most vendors, the controller-based APs maintain data and control tunnels with at least two controllers for immediate failover and redundancy.

  D. All vendors support at least one L2 or L3 broadcastprotocol for controller discovery by controller-based APs.

  E. All vendors recommend using L2 (instead of L3) controller discovery and tunneling protocols in large enterprises.

  Correct Answer: BD

• Question 129:

  As a station moves away from the access point to which it is associated, it changes its data rate from 600 Mbps to 540 Mbps and then to 450 Mbps.

  What IEEE 802.11 term or phase is used to describe this functionality?

  A. Dynamic Rate Switching

  B. Multirate Control

  C. Modulation and Coding Selection

  D. Rate Set Selectivity

  Correct Answer: A

• Question 130:

  As a consultant, you've been hired by XYZ Company to provide recommendations about client device selection, operation, and interoperability. What information should be considered to help them choose the right WLAN client devices?

  A. 802.11n OFDM is more susceptible to high-power, narrowband interference than 802.11a OFDM

  B. In order toearn Wi-Fi Alliance certification, 802.11n clients stations are required to support both 2.4 and 5 GHz frequencies

  C. 802.11ac devices support the features of the VHT PHY only in the 5 GHz frequency band.

  D. 802.11ac is not backwardly compatible with 802.11n or 802.11a.

  Correct Answer: C