CWNA-106無料問題集「CWNP Certified Wireless Network Administrator」

質問 1

You have been sent as a consultant to a customer site that is experiencing problems with some 2.4 GHz clients on their 802.11a/g/n/ac network. After collecting informationfrom the company about the problem, your initial troubleshooting step is to find a client device experiencing performance problems and observe its 802.11 frame exchanges in a protocol analyzer. The retransmission rate for that client is 65% instead of thecompany's baseline, which is 9%.
Based on this information, what troubleshooting step should follow to isolate the problem?

（A）Install Wi-Fi endpoint security and reporting software on the client device to monitor and log the retransmission behavior.

（B）Check theframe decodes in the protocol analyzer and look for an excessive number of deauthentication frames.

（C）Evaluate the client's operating frequency band with a spectrum analyzer, looking for a high noise floor or interference sources.

（D）Utilize a laptop-based site survey and planning tool to create a predictive model of the optimal AP placement in the customer's facility.

（E）With a protocol analyzer, identify the client's roaming threshold settings and reassociation behavior.

正解：C 解答を投票する

質問 2

Users and Network support personnel at a mid-sized equipment manufacturer have been discussing the potentialuses and benefits of implementing an indoor WLAN. The network administrator and network manager have requested a meeting of senior management personnel to discuss a WLAN implementation before performing a site survey or taking any implementation steps. Thefirst topic of discussion in the meeting is the corporate policy concerning implementation and use of WLAN technology.
What specific topics are appropriate in this policy meeting? (Choose 2)

（A）Businessjustification

（B）Defining RF channels for use

（C）Antenna types

（D）User productivity impact

（E）Use of the latest 802.11ac equipment

正解：A、D 解答を投票する

質問 3

When performing a site survey for a Multiple Channel Architecture (MCA) system in a multi- tenant building with five floors, what aspect should you, as the site surveyor, keep in mind?

（A）The RF interference caused by passing airplanes supporting on-board Wi-Fi should be a prime consideration.

（B）The omni-directional antennas of the access points should beoriented parallel to the floor to maximize the coverage pattern across as many floors as possible.

（C）The channel reuse pattern should be three dimensional with the RF cell extending coverage of each access point to other floors.

（D）The Fresnel Zone is completely blocked between floors so each floor is considered a separate site survey.

正解：C 解答を投票する

質問 4

Which of the following frequency ranges are specified for use by IEEE 802.11 radios?
(Choose all that apply.)

（A）2.4000 - 2.4835 GHz

（B）5.15 - 5.25 GHz

（C）5.470 - 5.725 GHz

（D）5.725 - 5.875 GHz

（E）902 - 928 MHz

正解：A、B、C、D 解答を投票する

質問 5

In an 802.11n WLAN with a heterogeneous set of associated client devices including
802.11b, 11g, and 11n, what HT protection mode will theBSS use?

（A）Mode 1: Nonmember protection mode

（B）Mode 2: 20 MHz protection mode

（C）Mode 3: Non-HT mixed mode

（D）Mode 0: No protection mode (Greenfield)

正解：C 解答を投票する

質問 6

What parameter of the client drivershould be configured on a Windows computer to optimize moving from one AP to another within the ESS?

（A）SSID selection

（B）Roaming threshold

（C）ESSID selection

（D）Band preference

正解：C 解答を投票する

質問 7

You are selecting antennas for a WLAN operating in the 5 GHz frequency band. What specifications should be evaluated for an antenna before it is implemented in this WLAN system? (Choose 3)

（A）TPCsupport

（B）Impedance in Ohms

（C）Elevation Beamwidth

（D）802.11ad compatibility

（E）Operating Frequencies

（F）Return Loss Rating

正解：B、C、E 解答を投票する

質問 8

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）VRRP

（B）WIPS

（C）RBAC

（D）IPSec

（E）SNMP

（F）WPA2

正解：C 解答を投票する

質問 9

When a client station sends a broadcast probe request frame with a wildcard SSID, how do
APs respond?

（A）After waiting a SIFS, all APs reply at the same time witha probe response.

（B）After waiting a SIFS, a designated AP sends an ACK, and then replies with a probe response.

（C）For each probe request frame, only one AP may reply with a probe response.

（D）Each AP checks with the DHCP server to see if it can respond and then acts accordingly.

（E）Each AP responds in turn after preparing a probe response and winning contention.

正解：E 解答を投票する

質問 10

What information is transmitted in the Beacon management frames of an HT access point to communicate about backward compatibility with ERP andHR/DSSS stations? (Choose
2)

（A）Secondary channel offset

（B）HT Protection mode

（C）Power save mode of clients

（D）RIFS mode

正解：B 解答を投票する

CWNA-106 無料問題集「CWNP Certified Wireless Network Administrator」

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