최신 CWAP-404 무료덤프 - CWNP Certified Wireless Analysis Professional

문제1

Your wireless network troubleshooting kit includes an antenna with the following specifications:
Gain: 5 dBi
Azimuth Beamwidth: 55 degrees
Elevation Beamwidth: 50 degrees
Frequency Range: 2.4 - 2.5 GHz and 4.9 - 5.9 GHz
Polarization: Linear
Impedance: 50 Ohms
For what aspect of network troubleshooting would this antenna be most useful?

A. Finding the physical location of an interfering transmitter to identify and remove the source

B. Identifying problems with Fresnel zone clearance in long range (10+ miles / 16+ km) point-to- point links

C. Capturing BSS-wide CRC error and retry statistics in most indoor WLAN environments

D. Increasing resolution bandwidth (RBW) on a spectrum analyzer to improve signature identification features

E. Matching transmit and receive capabilities for most client stations to reproduce client reception issues

정답: A

문제2

Which statements are true regarding wireless network discovery and scanning processes for an HT network? (Choose 2)

A. Access points send Beacon frames on all HT channels in the 2.4 GHz ISM band in a consecutive manner including the channel for which the access point is configured.

B. Client stations may continually send Probe Request frames on all HT channels in the 2.4 GHz ISM band in a consecutive manner, regardless of their association state.

C. Client stations send Probe Request frames on all HT channels in the 2.4 GHz ISM band in a consecutive manner until they receive at least 3 Probe Response frames.

D. Client stations send Probe Request frames on all HT channels in the 2.4 GHz ISM band in a consecutive manner until they associate with an access point. After associating to an access point, they no longer transmit Probe Request frames.

E. Access points send Beacon frames only on the HT channel in the 2.4 GHz ISM band for which the access point is configured, and only after scanning that channel to discover existing BSSs.

정답: B,E

문제3

You have captured 802.11 traffic using an adapter that includes the radio tap header. You see several frames often called announcement frames in the capture.
What best describes these types of frames?

A. They are meant to provide information to the network that may result in state changes, but they are not open for rejection

B. They are used to allow a STA to awake from sleep and for no other reason

C. They only include beacon and probe request frames

D. They only include beacon and probe response frames

정답: D

문제4

According to the IEEE 802.11 standard, what is one structural difference between a MAC Protocol Data Unit (MPDU) and a MAC Management Protocol Data Unit (MMPDU)?

A. An MMPDU header may only contain three address fields, but an MPDU may have four address fields.

B. The MMPDU frame body is limited to 300 bytes, whereas the MPDU frame body can carry up to
2304 bytes.

C. Both the MPDU and MMPDU have a QoS Control (QC) field, but all bits of the MMPDU's QC field are always 0.

D. The MPDU frame's FCS field is 4 bytes, while the MMPDU frame's FCS field is 8 bytes.

E. The MPDU header always places the BSSID in the first address field, but in the MMPDU the BSSID can be found in any of the address fields.

정답: A

문제5

You are troubleshooting a connection problem with a client STA. Regardless of the AP to which it attempts to connect, the connection fails.
Using a wired protocol analyzer, you determine that the problem is with the 802.1X/EAP authentication to the RADIUS server.
What layer or range of layers of the OSI model revealed this information?

A. Layer 2

B. Above Layer 4

C. Below Layer 3

D. Layer 3

정답: D

문제6

The To DS bit is set to 0 and the From DS is set to 1.
What best describes this 802.11 frame?

A. A frame being transmitted from a client STA to an AP

B. A frame being transmitted in a mesh BSS

C. A frame being transmitted directly from one client STA to another

D. A frame being transmitted from an AP to a client STA

정답: D

문제7

What is the function of the PHY layer?

A. Convert MSDUs to PPDUs for transmissions and PPDUs to MSDUs for receptions

B. Convert PSDUs to PPDUs for transmissions and PPDUs to PSDUs for receptions

C. Convert PPDUs to MSDUs for transmissions and MSDUs to PPDUs for receptions

D. Convert PPDUs to PSDUs for transmissions and PSDUs to PPDUs for receptions

정답: B

설명: (DumpTOP 회원만 볼 수 있음)

문제8

What is the function of the PMD sub-layer?

A. Adds a PHY preamble and header to a PSDU

B. Performs A-MPDU

C. Provides framing

D. Converts 1s and 0s given to it by the PLCP sub-layer into the appropriate RF signals

정답: D

문제9

How long, in microseconds, is the required Slot Time that is announced by an AP in an HT BSS when HR/DSSS, ERP-OFDM, and HT-OFDM client stations are associated to the AP?

A. 2 μs

B. 10 μs

C. 4 μs

D. 9 μs

E. 20 μs

정답: E

문제10

ABC Company requires the ability to identify and quickly locate rogue devices. ABC has chosen an overlay WIPS solution with Wi-Fi sensors that use dipole antennas to perform this task. No other sensors are included. Use your knowledge of location tracking techniques to answer the question.
Which one of the following location methods is not available in the described system?

A. Trilateration of RSSI measurements

B. GPS Positioning

C. RF Fingerprinting

D. Time Difference of Arrival (TDoA)

정답: B

최신 CWAP-404 무료덤프 - CWNP Certified Wireless Analysis Professional

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