CWNP CWNA-107 問題集

質問 1：
As you prepare for a site survey in a multi-floor corporate office, you have learned about several wireless devices that support connection-oriented, real-time applications. These applications are sensitive to service interruptions and require excellent signal quality, low latency, and low loss.
For that reason, it is important to identify sources of RF interference as well as building characteristics that would cause RF blockage or dead spots.
What systems or environmental characteristics are most likely to cause interference or RF blockage and disrupt service for these applications? (Choose 2)
A. Elevator shafts
B. Workspace dividers
C. Narrow hallways
D. Microwave ovens
E. RFID chokepoints
正解：A,D

質問 2：
A standard PoE injector is use to power an access point requiring 802.3at. CAT6 cabling is in use. What is the maximum distance supported between the access point and the Ethernet switch with the use of a midspan power injector?
A. 300 meters
B. 328 meters
C. 200 meters
D. 100 meters
正解：D

質問 3：
Which IEEE 802.11 physical layer (PHY) specifications include support for and compatibility with both ERP and HR/DSSS?
A. HT (802.11n)
B. OFDM (802.11a)
C. VHT (802.11ac)
D. DSSS (802.11-Prime)
正解：A

質問 4：
You are deploying a WLAN monitoring solution that utilizes distributed sensor devices. Where should sensors be deployed for best results? Choose the single best answer.
A. Every 20 feet and alongside each AP
B. IN critical areas where WLAN performance must be high
C. Closer to the client devices
D. Closer to the APs
正解：C

質問 5：
What advantages does using predictive site survey modeling software offer over performing a manual site survey? (Choose 2)
A. The exact impact of interference sources from external networks can be more accurately measured when using predictive modeling software than with manual surveys.
B. Predictive modeling software can predict the ideal access point location 100% of the time, whereas the results from manual surveyingare less reliable.
C. 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.
D. Predictive modeling software provides more reliable data than manual surveys when fine-tuning and validating access point placement after the installation.
E. 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.
正解：C,E

質問 6：
Which one of the following frequency ranges is not specified for use by IEEE 802.11 radios as of
802.11-2012?
A. 5.725-5.874 GHz
B. 2.4000-2.4835 MHz
C. 5.15-5.25 GHz
D. 600-630 MHz
正解：D

質問 7：
Your consulting firm has recently been hired to complete a site survey for a company. Your engineers use predictive design software for the task, but the company insists on a pre- deployment site visit. What task should be performed as part of the pre-deployment visit to prepare for a predictive design?
A. Test several antenna types connected to the intended Aps for use in the eventual deployment
B. Collect information about the company's security requirements and the current configuration of their RADIUS and user database servers
C. Evaluate the building materials at ABC's facility and confirm that the floor plan documents are consistent with the actual building
D. Install at least one AP on each side of the exterior walls to test for co-channel interference through these walls
正解：C