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

出題：1

The IEEE 802.11-2012 standard requires VHT capabledevices to be backward compatible with devices using which other 802.11 physical layer specifications (PHYs)? (Choose 2)

A. HR/DSSS

B. ERP-PBCC

C. DSSS-OFDM

D. OFDM

E. HT

正解：D,E 解答を投票する

出題：2

What phrase defines Equivalent Isotropically Radiated Power (EIRP)?

A. The power output from the radio after cable losses

B. The power output from theradio into the RF cable

C. Thehighest RF signal strength that is transmitted from a given antenna

D. Power supplied from the transmission line to the antenna input

正解：C 解答を投票する

出題：3

What word describes the bending of an RF signal as it passes through a medium of a varying densityfrom that of free space?

A. Refraction

B. Scattering

C. Diffraction

D. Diffusion

E. Reflection

正解：A 解答を投票する

出題：4

What term correctly completes the following sentence?
In an 802.11 frame, the IP packet is considered by the MAC layer to be a(n) _________.

A. MAC Service Data Unit(MSDU)

B. MAC Protocol Data Unit (MPDU)

C. PLCP Service Data Unit (PSDU)

D. PLCP Protocol Data Unit (PPDU)

正解：A 解答を投票する

出題：5

What factors influence the distance that an RF signal can be effectively received? (Choose 3)

A. MAC layer encryption

B. Transmitting station's power source

C. Temperature in the Fresnel zone

D. Free Space Path Loss

E. Receiving station's radio sensitivity

F. Transmitting station'soutput power

正解：D,E,F 解答を投票する

出題：6

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. Dynamic Frequency Selection (DFS)

C. Radio Resource Management (RRM)

D. Phase Shift Keying (PSK)

E. Transmit Power Control (TPC)

F. DistributedCoordination Function (DCF)

正解：B,E 解答を投票する

出題：7

What phrase correctly completes the following sentence?
When using WMM Power Save operation, a wireless client device______________.

A. Experiences higher throughput and lower latency than when operating in Active mode

B. Alternates between awake and dozing, depending on its need to transmit and receive information

C. Enters a low-power radio state until it receives a WMM PS-Poll frame from the AP

D. Buffers frames destined to the low-power AP until the AP wakes its radio and begins beaconing again

正解：B 解答を投票する

出題：8

What causes of hidden nodes within a BSS would be more likely lead to an increase in collisions and retries? (Choose 2)

A. Access points broadcasting with too little power

B. Data frames too large for the physical environment

C. Obstacles between client stations causing attenuation

D. Client stations too close in proximity to each other

E. Client stationsbroadcasting with too much power

F. Large 802.11 cells with physically distributed stations

正解：C,F 解答を投票する

出題：9

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：10

What answer correctly completes the following sentence?
____________ and physical carrier sense functions are used to determine if the wireless medium is busy.

A. Active

B. Virtual

C. Backup

D. Passive

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」