PW0-270 by CWAP Actual Free Exam Questions And Answers

Question 1

Shown is a screenshot of a wireless protocol analyzer displaying the decode information for a single 802.11 encrypted data + CF-Poll frame. The infrastructure BSS on which this information was captured is using WEP and this particular frame was sent from a client station (STA) to an access point (AP).

As a protocol analyst, how would you explain the existence of this frame on the wireless medium given the information in the decode?

A. The IEEE 802.11 network is using both version 1 and version 2 protocols simultaneously. This unexpected frame is from the version 2 protocol set.

B. The frame was misinterpreted because of insufficient information received by the analyzer due to frame corruption.

C. The frame was sent by a client station that does not comply with IEEE HR/DSSS standard to an access point that is Wi-Fi certified.

D. The access point is operating as a repeater, and clients must poll repeater access points in order to transmit data frames through them.

Discussion 0

Correct Answer: B Vote an answer

Question 2

Why is a high CRC error rate in L2 protocol analysis software NOT always a valid indicator of network performance? (Choose 3)

A. If protocol analysis software is not properly configured with frame decryption parameters, it can't accurately calculate a CRC, which includes the encrypted frame body contents.

B. Radio and antenna hardware used for protocol analysis may not match the receive sensitivity, diversity, MIMO, or antenna gain capabilities of the network WLAN hardware.

C. Layer 2 protocol analysis can only collect and interpret data that is received properly at the MAC layer, and cannot quantify some PHY-layer problems.

D. If the protocol analysis radio hardware is not located in the same area as intended client devices or APs, its data sampling may not be representative of actual traffic on the network.

Discussion 0

Correct Answer: B,C,D Vote an answer

Question 3

An HT STA does not receive an ACK for a first-attempt data frame that it transmitted. Assuming this STA is not using BlockAcks in this case, what happens to the HT STA's EDCA contention window?

A. The contention window is not affected by failed Data frame delivery.

B. The contention window approximately doubles in size.

C. The contention window is immediately closed, and the frame is retransmitted.

D. The slot time within the contention window decreases by 50%.

E. It varies because the backoff algorithm is random.

Discussion 0

Correct Answer: B Vote an answer

Question 4

In which 802.11 frames is the SSID present, provided the SSID is not removed through proprietary software configuration by an administrator? (Choose 3)

A. Association Response

B. Reassociation Request

C. Probe Response

D. Authentication

E. Disassociation

F. Association Request

Discussion 0

Correct Answer: B,C,F Vote an answer

Question 5

With what access category's parameters are WLAN multicast video frames transmitted when the EDCAF is in use by the transmitting station?

A. AC_BK

B. AC_VO

C. AC_VI

D. AC_BE

Discussion 0

Correct Answer: D Vote an answer

Question 6

The 802.11r-2008 amendment to the 802.11 specification introduces what new Information Elements (IEs) to facilitate fast BSS transitions? (Choose 2)

A. RSN IE (Robust Security Network)

B. MD IE (Mobility Domain)

C. FT IE (Fast Transition)

D. FSR IE (Fast Secure Roaming)

E. HT IE (High Throughput)

F. DS IE (Distribution System)

Discussion 0

Correct Answer: B,C Vote an answer

CWAP Certified Wireless Analysis Professional - PW0-270 Exam Practice Test

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