CWNA-106試験無料問題集（140題）「CWNP Certified Wireless Network Administrator 認定」

出題：1

What statements about the SSID are true? (Choose 2)

A. The SSID is a security session identifierused in RSNs.

B. When configuring a new network, creating an SSID is optional.

C. The SSID is an alphanumeric value assigned to device manufacturers by the IEEE.

D. The SSID is a pseudo-random number assigned to each client by an AP.

E. The SSID must be included in an association request frame.

F. The SSID is an alphanumeric value with a maximum length of 32 octets.

正解：E,F 解答を投票する

出題：2

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

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

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

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

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

正解：B 解答を投票する

出題：3

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

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

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

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

正解：A,B 解答を投票する

出題：4

For what likely reasons might an organization choose to purchase an AP designed for outdoor deployment to use as an indoor WLAN AP at an industrial facility? (Choose 2)

A. Physical security and theft prevention

B. Protection from environmental conditions

C. 802.11 securitycompliance

D. Reduce transient RF interference

E. Aesthetic requirements

正解：A,B 解答を投票する

出題：5

The network administrator at XYZ Company recently attended a training class on wireless security and realized that heshould update the corporate security policy to address WLAN technology. The network administrator is listing the items that should be addressed in the security policy update, and has asked for your input.
What WLAN topics should be addressed by a companysecurity policy? (Choose 3)

A. User density planning and AP client association thresholds

B. Training of the IT staff on WLAN operational security

C. Wired network performance analysis andbaseline documentation

D. Wireless intrusion monitoring and response procedures

E. Theft prevention and data security of WLAN infrastructure devices

F. WLAN performance analysis baseline documentation

正解：B,D,E 解答を投票する

出題：6

When a client moves to a new BSS within an ESS, whatstep is a part of the 802.11 reassociation process?

A. The current access point informs the IP gateway of the reassociation.

B. The new access point transmits a Reassociation Response to the client station with a status value.

C. The current access point triggers theclient's reassociation service.

D. The client station transmits a Reassociation Request frame to its currentaccess point.

正解：B 解答を投票する

出題：7

If an 802.11 RF transmission reaches a receiving antenna simultaneously by direct and reflected paths, what effect will the reflected signal have on the signal that took the direct line-of-sight path?

A. Thedirect signal will only be received if the reflected signal is more than 180 degrees out of phase.

B. The signals will be distorted if the indirect signalarrives simultaneously at the receiver, but 90 degrees out-of-phase.

C. If the signalsare in-phase, they will combine together, cancel one another out, and create a null.

D. The direct signal cannot be received if the indirect signal is less than 90 degrees out-of- phase.

正解：B 解答を投票する

出題：8

ABC Company has just purchased a 6 dBi patch antenna. After performing some testswith the 6 dBi antenna, they have concluded that more antenna gain is needed to cover their outdoor courtyard. When choosing an antenna with higher gain, what other antenna characteristic will also always change?

正解：A 解答を投票する

出題：9

You are onsite with a client to perform a post-deployment site survey. When verifying a multiple channel VoWiFi deployment using a VoWiFi handset, which aspect is most important?

A. Performingprotocol analysis with a single wireless adapter that is scanning all channels in use

B. Verifying the VHT functionality to handle the call volume incurred by a single VoIP phone call.

C. Testing a constant conversation orhandset tone while roaming from area to area, or performing an active survey

D. Configuring DSCP-to-802.11e QoS maps on the handset for each access category.

正解：C 解答を投票する

出題：10

What statement is true concerning the use of Orthogonal Frequency Division Multiplexing
(OFDM) in IEEE 802.11 WLANs?

A. With 802.11a OFDM, 16-QAM provides either 48 or 54 Mbps data rates, dependingupon coding rates.

B. 802.11ac VHT-OFDM utilizes 256-QAM, which increases the data rate significantlyover
64-QAM available in HT-OFDM.

C. In 802.11a OFDM, fifty-six (56) subcarriers are used as parallel symbol transmission paths to carry data.

D. 802.11a/g/n OFDM includes several combinations of modulation and coding to achieve data rates from 1-600 Mbps.

E. 802.11a and 11n use six (6) "pilot" subcarriers as a reference for thereceiver to detect frequency and phase shifts of the signal.

正解：B 解答を投票する

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