Cwap-402 Exam Certification

By Author: Dennis Ng
Total Articles: 67
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Question: 1

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 3
B. Layer 2
C. Below Layer 3
D. Above Layer 4

Answer: A

Question: 2

iPerf is a tool used in what category of testing?

A. Configuration
B. Connection
C. Name resolution
D. Throughput

Answer: D

Question: 3

You are attempting to work through a user complaint with the CWNP-recommended troubleshooting methodology.
What must be clearly identified in order to reduce the number of possible causes at step three?

A. The user name
B. The problem
C. The device type
D. The user’s IP configuration

Answer: B

Question: 4

What action is taken automatically by 802.11 APs and client STAs as the signal strength of the link weakens ...
... in order to improve the quality of the RF communications overall?

A. Output power is increased
B. RSSI is increased
C. Data rates are reduced
D. Antenna gain is increased

Answer: C

Question: 5

You are explaining capacity planning to another engineer assisting you on a WLAN implementation project. As part of the explanation, you provide the following formula: C = B * log2(1 + S/N).
What does this formula define?

A. Bandwidth capabilities of a channel
B. The WEP encryption algorithm
C. Minimum signal strength for a data rate
D. Maximum signal strength of a channel

Answer: A

Question: 6

When evaluating modulation and coding schemes, you must determine the best coding rate available. In 802.11 MCS tables, what is the best coding rate from the perspective of highest data rates?

A. 5/6
B. 3/4
C. 2/3
D. 1/2

Answer: A

Question: 7

To what data rates can a 5 GHz PHY device shift when changers occur in the signal strength?

A. 11, 5.5, 2, 1
B. 24, 18, 12, 5.5
C. 24, 18, 11, 2
D. 24, 18, 12, 6

Answer: D