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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Spectrum Analysis Tools and Methodologies | 15% | - Spectrum analyzer configuration parameters and visualization layouts
|
| Topic 2: WLAN Medium Access | 10% | - Contention algorithms and wireless scheduling parameters
|
| Topic 3: 802.11 Operation and Frame Exchanges | 40% | - Control plane handshakes and transmission recovery operations
|
| Topic 4: Protocol Analysis Tools and Methodologies | 15% | - WLAN analyzer architectures and placement configurations
|
| Topic 5: 802.11 Frame Formats and Technologies | 20% | - Physical Layer (PHY) header mechanics and encoding structures
|
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NEW QUESTION # 125
In which element of a Beacon frame would you look to identity the current HT protection mode in which an AP is operating?
Answer: D
Explanation:
The HT protection mode in which an AP is operating can be identified by looking at the HT Operations element in a Beacon frame. The HT Operations element is a part of the Beacon frame that contains information about the High Throughput (HT) capabilities and operation of an 802.11n BSS. The HT Operations element has a field called HT Protection, which indicates how the BSS protects its HT transmissions from interference or collisions with non-HT devices or BSSs. The HT Protection field can have four values: No Protection, Nonmember Protection, 20 MHz Protection, or Non-HT Mixed Mode. The other options are not correct, as they do not contain information about the HT protection mode. The HT Protection element does not exist, the ERP Information element is used for Extended Rate PHY (ERP) protection mode for 802.11g devices, and the HT Capabilities element is used for indicating the supported HT features of an individual device. References: [Wireless Analysis Professional Study Guide CWAP-405], Chapter 5: 802.11 MAC Sublayer, page 125-126
NEW QUESTION # 126
In what scenario is Open Authentication without encryption not allowed based on the 802.11 standard?
Answer: B
Explanation:
Open Authentication without encryption is not allowed when operating a BSS in the 6 GHz band, according to the 802.11 standard. Open Authentication is a type of authentication method that does not require any credentials or security information from a STA (station) to join a BSS (Basic Service Set). Open Authentication can be used with or without encryption, depending on the configuration of the BSS and the STA. Encryption is a technique that scrambles the data frames using an algorithm and a key to prevent unauthorized access or eavesdropping. However, in the 6 GHz band, which is a newly available frequency band for WLANs, Open Authentication without encryption is prohibited by the 802.11 standard, as it poses security and interference risks for other users and services in the band. The 6 GHz band requires all WLANs to use WPA3-Personal or WPA3-Enterprise encryption methods, which are more secure and robust than previous encryption methods such as WPA2 or WEP. The other options are not correct, as they do not describe scenarios where Open Authentication without encryption is not allowed by the 802.11 standard.
When operating a BSS in the CBRS band, which is another newly available frequency band for WLANs, Open Authentication without encryption is allowed, but not recommended, as it also poses security and interference risks for other users and services in the band. When operating a BSS in FIPS mode, which is a mode that complies with the Federal Information Processing Standards for cryptographic security, Open Authentication without encryption is allowed, but not compliant, as it does not meet the FIPS requirements for encryption algorithms and keys. When operating a BSS in a government facility, Open Authentication without encryption is allowed, but not advisable, as it may violate the government policies or regulations for wireless security. References: [Wireless Analysis Professional Study Guide CWAP-405], Chapter 8: Security Analysis, page 220-221
NEW QUESTION # 127
According to the 802.11n-2009 amendment, what security requirement is specified for HT BSSs?
Answer: D
NEW QUESTION # 128
How many frames are exchanged for 802.11 authentication in the 6 GHz band when WPA3-Enterprise is not used, and a passphrase is used instead?
Answer: C
Explanation:
Two frames are exchanged for 802.11 authentication in the 6 GHz band when WPA3-Enterprise is not used, and a passphrase is used instead. Authentication is a process that establishes an identity relationship between a STA (station) and an AP (access point) before joining a BSS (Basic Service Set). There are two types of authentication methods defined by 802.11: Open System Authentication and Shared Key Authentication.
Open System Authentication does not require any credentials or security information from a STA to join a BSS, and it consists of two frames: an Authentication Request frame sent by the STA to the AP, and an Authentication Response frame sent by the AP to the STA. Shared Key Authentication requires a shared secret key from a STA to join a BSS, and it consists of four frames: two challenge-response frames in addition to the request-response frames. However, Shared Key Authentication uses WEP (Wired Equivalent Privacy) as its encryption algorithm, which is insecure and deprecated. In the 6 GHz band, which is a newly available frequency band for WLANs, Shared Key Authentication is prohibited by the 802.11 standard, as it poses security and interference risks for other users and services in the band. The 6 GHz band requires all WLANs to use WPA3-Personal or WPA3-Enterprise encryption methods, which are more secure and robust than previous encryption methods such as WPA2 or WEP. WPA3-Personal uses a passphrase to derive a PMK (Pairwise Master Key), while WPA3-Enterprise uses an authentication server to obtain a PMK. Both methods use SAE (Simultaneous Authentication of Equals) as their authentication protocol, which replaces PSK (Pre- Shared Key) or EAP (Extensible Authentication Protocol). SAE consists of two frames: an SAE Commit frame sent by both parties to exchange elliptic curve parameters and nonces, and an SAE Confirm frame sent by both parties to verify each other's identities and generate a PMK. Therefore, when WPA3-Enterprise is not used, and a passphrase is used instead in the 6 GHz band, only two frames are exchanged for 802.11 authentication: an SAE Commit frame and an SAE Confirm frame. References: [Wireless Analysis Professional Study Guide CWAP-405], Chapter 8: Security Analysis, page 220-221
NEW QUESTION # 129
Which one of the statements regarding the Frame Control field in an 802.11 MAC header is true?
Answer: A
Explanation:
The Frame Control field in the 802.11 MAC header is composed of multiple subfields, including several 1-bit flags such as To DS, From DS, More Fragments, Retry, Power Management, More Data, Protected Frame, and Order. These subfields define the type, subtype, and control characteristics of the frame.
NEW QUESTION # 130
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