CWAP-402 Exam Questions

In an HT WLAN in which a delayed Block Ack policy is set up, what should result when an ACK frame is not received by the originator in response to a Basic BlockAckReq?

As it relates to a spectrum analyzer, complete the following sentence. The ____________ plot always displays the percentage of time (shown on the Y axis) that the overall RF power...

What MAC layer information will a dual-band 802.11n protocol analyzer capture if it is capturing data frames encrypted with WPA2-Enterprise? (Choose 2)

What is indicated to a QoS AP when a QoS STA sets U-APSD Flag bits to 1 in (Re) Association frames?

Your wireless network troubleshooting kit includes an antenna with the following specifications: Gain: 5 dBi Azimuth Beamwidth: 55 degrees Elevation Beamwidth: 50 degrees Frequency...

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 det...

iPerf is a tool used in what category of testing?

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...

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?

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...

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...

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

You are working in an organization that has implemented an SCA-based WLAN. You want to change the RF channel for a single AP. What can you do to perform this task with some SCA sol...

You are performing 802.3 network analysis. For what are the DA and SA fields used in the frame header?

What element was added to the general frame of 802.11 with the 802.11e amendment and the 802.11- 2007 rollup?

You must report on frame types seen on the WLAN. You want to list the frame types by both name and binary value. What frame type is represented by the binary value 011010, which in...

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

You are tasked with describing the various frames used in 802.11 communications. What frame is used for spectrum management, fast BSS transition and some other actions taken within...

You are considering the performance of a BSS based on different PHY types used. In the BSS, one device must use ERP as it does not support HT in its 2.4 GHz band. What is the durat...

What is the Extended IFS used in 802.11 contention?

The data rate for a data frame is 150 Mbps in 5 GHz. What rate is used to transmit the PHY header information?

You are creating a baseline configuration for a pool of 100 laptops related to Wi-Fi. The laptops have dual- band 802.11ac adapters. They are configured for aggressive roaming. Wha...

You are analyzing a problem with a specific client adapter. The vendor specifications sheet does not provide detailed information. What tool can you use to provide the most detaile...

You have implemented an AP at a remote office. It is a single-band AP supporting 802.11ac. Several users complain that their laptops cannot connect to the WLAN. These laptops are f...

A manager at a retail outlet has complained that an incident occurred allowing a STA to launch an attack against another STA connected to their public Wi-Fi hotspot. He has asked y...

You work as an SE for a value-added reseller. A client has an existing deployment of 802.11n Aps and wants to upgrade several BSSs to 802.11ac. What hardware feature of some enterp...

You are troubleshooting throughput problems for a WLAN cell. The cell is provisioned with an 802.11ac dual-band AP. Users connected with both 5 GHz and 2.4 GHz connections are repo...

When using Wireshark for protocol analysis, what filter will allow you to see only beacon frames?

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 th...

What is the formula used to calculate the Duration field value in an RTS frame?

You view a protocol analyzer capture decode with the following protocol frames listed in the following order (excluding the ACK frames): 1) 802.11 Probe Request and 802.11 Probe Re...

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 t...

You require 802.11ac capture solution. You want to capture using native operating system tools if possible. What operating system has built-in ability to capture 802.11ac frames as...

You have implemented centralized, infrastructure-based spectrum analysis. The Aps are configured to perform spectrum analysis in an ad-hoc manner and will go offline as Aps to perf...

You have been asked to recommend a solution for protocol capture of 802.11 frames consisting of 3x3:3 802.11ac communications. The requirement specifies that you gain a general vie...

You have been asked to recommend a protocol analysis solution that uses open source software and works with the Linux platform. It must provide decoding of 802.11ac frames and mini...

The manager in the security group is concerned about compliance with security policies on the WLAN. The budget is not available for a full WIPS SOLUTION. He has asked you to implem...

You are using a laptop-based protocol analyzer to scan all channels and determine the basic configuration of the WLAN Basic Service Set in your facility. You are scanning all chann...

Given: Protocol analyzer often have useful graphical dashboards providing information about the health and operations of the WLAN. What is a valid use of a graph showing the Top AP...

When using a commercial WLAN protocol analyzer, you notice that it is listing vendor names for some APs and client STAs. What is the source of this information?

You have received reports of performance problems in a BSS. One specific user is indicating that her downloads are taking a very long time compared to other users around her. You w...

You are attempting to determine timing information within a packet capture of a WLAN protocol analyzer. What time is used to display the time the packet was captured based on the s...

You want to simplify viewing frames of a particular type in Wireshark. What is used to specify frames for colorization?

You are evaluating a protocol capture file in Wireshark. The following filter is applied: wlan_radio.11ac.bandwidth - - 4 What kind of frames are displayed?

Given: Adjacent Channel Interference (ACI) can cause frame corruption and poor performance in WLANs. You are using a protocol analyzer in the attempt to detect ACI. What should you...

You are responsible for troubleshooting and analysis of the WLAN in your organization that supports more than 700 client STAs. Forty APs are deployed and they are all dual-band APs...

You have been recently hired as the wireless network administrator for an organization spread across seven locations. They have deployed more than 100 APs, but they have not been m...

Several users have reported WLAN network connection issues and the users connect to the same AP. These users are spread throughout a 320 square meter area. Using a spectrum analyze...

You are using the real-time FFT display of a spectrum analyzer. In what domain does this show the RF energy detected in the swept frequencies?

You need to determine RF activity over time in a spectrum analyzer. It is to be able to see the activity and the amplitude of that activity. What kind of view should be used?