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| Section | Weight | Objectives |
|---|---|---|
| Protocol Analysis | 15% | - Protocol analysis fundamentals - Troubleshooting using protocol data - Capture and decode process - Analysis tools and methods |
| 802.11 Frame Exchanges | 30% | - Frame exchange troubleshooting - Frame exchange sequences - Data transfer and protection mechanisms - Association and authentication processes |
| MAC Sublayer and Functions | 25% | - QoS and power management - MAC addressing and operations - MAC layer troubleshooting - MAC frame formats and types |
| WLAN Medium Access | 10% | - Medium access related issues - Medium access performance analysis - CSMA/CA and medium access rules - Contention and coordination functions |
| Spectrum Analysis | 10% | - Spectrum analysis tools - Troubleshooting RF issues - RF spectrum fundamentals - Interference detection and classification |
| PHY Layers and Technologies | 10% | - 802.11 physical layer standards - PHY layer troubleshooting - Channelization and frequency usage - Modulation and coding schemes |
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NEW QUESTION # 111
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 from multiple vendors and range in age from 2 to 4 years. The SSID and security profile settings are correct. All default settings were used on the AP with the exception of the SSID and security settings.
What is the most likely issue preventing these STAs from connecting to the AP?
Answer: A
NEW QUESTION # 112
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 minimal support for reporting and statistics.
What solution would you recommend?
Answer: A
NEW QUESTION # 113
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 channels. All configured with default settings.
What can you change to cause the scan to run faster while still APs are capturing beacon frames on all the channels?
Answer: A
NEW QUESTION # 114
An RTS frame should be acknowledged by which frame?
Answer: C
Explanation:
An RTS (Request to Send) frame should be acknowledged by a CTS (Clear to Send) frame. An RTS and CTS frame are types of control frames that are used to implement a virtual carrier sense mechanism called RTS
/CTS. RTS/CTS is a technique that helps to avoid collisions and hidden node problems in wireless transmissions. When a STA (station) wants to send a data frame, it first sends an RTS frame to the intended receiver, indicating the duration of the transmission. The receiver then responds with a CTS frame, also indicating the duration of the transmission. The other STAs in the vicinity hear either the RTS or the CTS frame and update their NAV (Network Allocation Vector) timers accordingly, deferring their access to the medium until the transmission is over. The sender then sends the data frame, followed by an ACK (Acknowledgement) frame from the receiver. The other options are not correct, as they are not used to acknowledge an RTS frame. An ACK frame is used to acknowledge a data frame, not an RTS frame. An RTS- Ack frame does not exist, as there is no such type of control frame in 802.11. A Block Ack (BA) frame is used to acknowledge multiple data frames in a single frame, not an RTS frame. References: [Wireless Analysis Professional Study Guide CWAP-405], Chapter 6: 802.11 Frame Exchanges, page 166-167
NEW QUESTION # 115
The resolution bandwidth of a Fast Fourier Transform plot is dictated by what?
Answer: C
Explanation:
In an FFT plot, the resolution bandwidth is determined by the bin size, which defines the frequency width of each discrete segment. Smaller bin sizes provide finer frequency resolution, allowing more detailed analysis of signals.
NEW QUESTION # 116
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