最新的CWNP CWNA-109免費考試真題

問題1

An 802.11-based network uses an AP and has several connecting clients. The clients include iPhones, iPads, laptops and one desktop. What WLAN use case is represented?

A. Ad-hoc

B. BSS

C. WPAN

D. IBSS

正確答案: B

說明：（僅 Fast2test 成員可見）

問題2

What statement about the IEEE 802.11-2016 QoS facility is true?

A. When the Voice queue has frames awaiting transmission, no data will be transmitted from the Best Effort queue.

B. 802.11 control frames are assigned to the 802.11 EF priority queue.

C. Four 802.1p user priorities are mapped to eight 802.11 transmit queues.

D. 802.11 QoS is achieved by giving high priority queues a statistical advantage at winning contention.

正確答案: D

說明：（僅 Fast2test 成員可見）

問題3

You are troubleshooting a problem with a new 802.11ax AP. While the AP supports four spatial streams, most clients are only achieving maximum data rates of 150 Mbps. What is the likely cause?

A. Contention caused by an overlapping BSS

B. The clients are only two stream 802.11ax clients

C. The clients are 802.11n devices

D. Non-Wi-Fi interference in the channel

正確答案: C

說明：（僅 Fast2test 成員可見）

問題4

What is the most effective method for testing roaming in relation to 802.11 VoIP handsets?

A. Use the built-in roaming monitor built into all VoIP handsets.

B. Place a call with the handset and move around the facility to test quality during roaming.

C. Use a protocol analyzer to capture the traffic generated when a laptop roams.

D. Use a spectrum analyzer to monitor RF activity during a VoIP call.

正確答案: B

說明：（僅 Fast2test 成員可見）

問題5

What organization is responsible for testing and certifying interoperability between 802.11 devices from different manufacturers?

A. FCC

B. Wi-Fi Alliance

C. ISO

D. IEEE

正確答案: B

說明：（僅 Fast2test 成員可見）

問題6

A wireless engineer wants to enable both legacy 802.11b clients and modern 802.11ax clients to associate with the same 2.4 GHz SSID. What is a drawback of enabling this level of backward compatibility?

A. Protection mechanisms required for mixed-mode operation add overhead, reducing overall throughput for the entire BSS.

B. 802.11b clients cannot use WPA3 security under any circumstance.

C. 802.11ax clients will be unable to connect to a BSS that also supports 802.11b.

D. There is no drawback; mixed-mode operation has no performance impact.

正確答案: A

說明：（僅 Fast2test 成員可見）

問題7

What security protocol, mandated by the Wi-Fi Alliance, replaced WPA2 and introduced Simultaneous Authentication of Equals (SAE) as a replacement for the PSK four-way handshake?

A. WPA3

B. WPA2

C. WPA

D. WEP

正確答案: A

說明：（僅 Fast2test 成員可見）

問題8

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

A. OFDM implements BPSK modulation to allow for data rates up to 7 Gbps.

B. OFDM was used by Frequency Hopping Spread Spectrum (FHSS) PHY devices.

C. OFDM was first introduced in 802.11a and is used by the ERP, HT and VHT PHYs as well.

D. OFDM modulation is used only in 5 GHz 802.11 transmissions.

正確答案: C

說明：（僅 Fast2test 成員可見）

問題9

What cipher suite is specified by the 802.11-2016 standard and is not deprecated?

A. Wired Equivalent Privacy

B. Counter Mode with CBC-MAC Pro tocol

C. Extensible Authentication Protocol

D. Temporal Key Integrity Protocol

正確答案: B

說明：（僅 Fast2test 成員可見）

問題10

A wireless engineer needs to calculate the total power radiated from an antenna, accounting for transmitter power, cable/connector losses, and antenna gain. What is this calculated value called?

A. Fade margin

B. Receiver sensitivity

C. Effective Isotropic Radiated Power (EIRP)

D. Free space path loss

正確答案: C

說明：（僅 Fast2test 成員可見）

問題11

What factor does not influence the distance at which an RF signal can be effectively received?

A. Transmitting station's output power

B. Receiving station's output power

C. Receiving station's radio sensitivity

D. Free Space Path Loss

正確答案: B

說明：（僅 Fast2test 成員可見）

問題12

What statement about 802.3, Clause 33 Power over Ethernet is true?

A. When using CAT5 cabling, you increase the maximum draw available to the PD over that available with CAT6.

B. Only midspan PSEs are supported.

C. The lowest voltage drop is achieved when using CAT6 cable instead of Cat5 or CAT5e.

D. Only endpoint PSEs are supported.

正確答案: C

說明：（僅 Fast2test 成員可見）

問題13

What best describes WPA2 in relation to 802.11 wireless networks?

A. WPA2 is the standard that defines security for WLANs.

B. WPA2 is specified in the 802.11 standard as implementing CCMP/AES.

C. WPA2 is the second version of WPA and it enhances security through the use of TKIP instead of WEP.

D. WPA2 is a certification created by the Wi-Fi Alliance that validates devices correctly implement CCMP/ AES.

正確答案: D

說明：（僅 Fast2test 成員可見）

問題14

You are attempting to locate the cause of a performance problem in two WLAN cells in a mostly overlapping coverage area. You note that one AP is on channel 1 and the other is on channel 2.
When you document your findings, what term do you use to describe the problem in this configuration?

A. CCI

B. Non-Wi-Fi interference

C. CCC

D. ACI

正確答案: D

說明：（僅 Fast2test 成員可見）

最新的CWNP Wireless Network Administrator (CWNA) - CWNA-109免費考試真題

聯系我們

站內鏈接

最新更新