QUESTION: 5

When configuring a long-term, forensic packet capture and saving all packets to disk which of the following is not a consideration?

Real-time packet decodes
Analyzer location
Total capture storage space
Individual trace file size

Answer(s): A

Explanation:

Real-time packet decodes are not a consideration when configuring a long-term, forensic packet capture and saving all packets to disk. Real-time packet decodes are useful for live analysis and troubleshooting, but they consume CPU and memory resources that could affect the performance of the capture process. For a long-term, forensic packet capture, it is more important to consider the analyzer location, the total capture storage space, and the individual trace file size. These factors affect the quality and quantity of the captured packets and the ease of post-capture analysis34

Reference:

CWAP-404 Study Guide, Chapter 2: Protocol Analysis, page 49 CWAP-404 Objectives, Section 2.1: Configure protocol analyzers

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QUESTION: 6

You are performing a multiple adapter channel aggregation capture to troubleshoot a VoIP roaming problem and would like to measure the roaming time from the last VoIP packet sent on the old AP's channel to the first VoIP packet sent on the new AP's channel.
Which timing column in the packet view would measure this for you?

Roaming
Relative
Absolute
Delta

Answer(s): D

Explanation:

Delta is the timing column in the packet view that measures the time difference between two consecutive packets in a capture file. Delta can be used to measure the roaming time from the last VoIP packet sent on the old AP's channel to the first VoIP packet sent on the new AP's channel by selecting these two packets and looking at their delta values. The other timing columns are not suitable for this measurement because they do not show the time difference between two specific packets. Roaming is a column that shows whether a packet belongs to a roaming event or not. Relative is a column that shows the time elapsed since the beginning of the capture file. Absolute is a column that shows the date and time when a packet was captured5

Reference:

CWAP-404 Study Guide, Chapter 2: Protocol Analysis, page 57 CWAP-404 Objectives, Section 2.4: Analyze timing values

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QUESTION: 7

Protocol analyzers may present field values in either binary, decimal or hexadecimal.
What preceeds a hexadecimal value to indicate it is hexadecimal?

Answer(s): A

Explanation:

A hexadecimal value is a value that uses base 16 notation, which means it can have digits from 0 to 9 and letters from A to F. A hexadecimal value is usually preceded by 0x to indicate that it is hexadecimal and not decimal or binary. For example, 0x0A is hexadecimal for 10 in decimal or 00001010 in binary. The other options are not valid prefixes for hexadecimal values.

Reference:

CWAP-404 Study Guide, Chapter 2: Protocol Analysis, page 35 CWAP-404 Objectives, Section 2.2: Analyze field values

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QUESTION: 8

Which one of the these is the most important in the WLAN troubleshooting methodology among those listed?

Obtain detailed -knowledge of the wireless vendors debug and logging options
Interview the network manager about the issues being experienced
Observe the problem
Talk to the end users about their experiences

Answer(s): C

Explanation:

Observing the problem is the most important step in the WLAN troubleshooting methodology among those listed. This step involves capturing and analyzing the relevant data from the wireless network, such as packets, frames, spectrum, and performance metrics. Observing the problem helps to verify the existence and scope of the issue, identify the root cause and possible solutions, and validate the results of any actions taken. The other steps are also important, but they are not as critical as observing the problem12

Reference:

CWAP-404 Study Guide, Chapter 1: Troubleshooting Methodology, page 15 CWAP-404 Objectives, Section 1.2: Observe the problem

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QUESTION: 5

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QUESTION: 6

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QUESTION: 7

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QUESTION: 8

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