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CWNP CWNA-109 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: IEEE 802.11 Protocols and Devices20%- 802.11 Frame Types
  • 1. Frame exchange processes
  • 2. Management, Control, and Data frames
- WLAN Architecture
  • 1. Extended Service Set (ESS)
  • 2. Independent Basic Service Set (IBSS)
  • 3. Stations (STA), Access Points (AP)
  • 4. Distribution System (DS)
  • 5. Basic Service Set (BSS)
- CSMA/CA
  • 1. DCF and EDCA
  • 2. RTS/CTS
Topic 2: IEEE 802.11 Network Implementation20%- Deployment Models
  • 1. Autonomous APs
  • 2. Cloud-based and Controller-based
  • 3. Distributed and Centralized architectures
- Power over Ethernet (PoE)
  • 1. 802.3af, 802.3at, 802.3bt
- Site Survey and Design
  • 1. Predictive and Passive site surveys
  • 2. AP placement and density
  • 3. Active site surveys
Topic 3: Radio Frequency (RF) Technologies15%- RF Fundamentals
  • 1. Wavelength, frequency, and amplitude
  • 2. RF behaviors: absorption, reflection, refraction, diffraction, scattering
  • 3. Signal strength and loss (attenuation)
- RF Mathematics
  • 1. Inverse Square Law
  • 2. dB, dBi, dBd, dBm
  • 3. Link budget calculations
- Antenna Concepts
  • 1. Antenna types and usage
  • 2. Polarization
  • 3. Antenna gain and patterns
Topic 4: IEEE 802.11 Network Operations15%- Performance Optimization
  • 1. Roaming (802.11r/k/v)
  • 2. QoS (WMM)
  • 3. Channel management
- Troubleshooting
  • 1. Common connectivity issues
  • 2. Protocol analysis
  • 3. Spectrum analysis
Topic 5: IEEE 802.11 Regulations and Standards15%- IEEE 802.11 Standards
  • 1. 802.11-2020 and amendments (a/b/g/n/ac/ax)
  • 2. 802.11be (Wi-Fi 7) overview
  • 3. Channel bonding and widths
- Regulatory Bodies and Domains
  • 1. FCC, ETSI, IC, and others
  • 2. Frequency bands and channels
Topic 6: IEEE 802.11 Network Security15%- Encryption and Authentication
  • 1. OWE and SAE
  • 2. 802.1X/EAP
  • 3. CCMP, GCMP
- Security Basics
  • 1. Authentication and Association
  • 2. WPA2 and WPA3
  • 3. Legacy security (WEP, WPA)

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CWNP Wireless Network Administrator (CWNA) Sample Questions (Q109-Q114):

NEW QUESTION # 109
Which IEEE 802.11 physical layer (PHY) specification includes support for and compatibility with both ERP and HR/DSSS?

Answer: C

Explanation:
The HT (802.11n) physical layer (PHY) specification includes support for and compatibility with both ERP and HR/DSSS. ERP stands for Extended Rate PHY, which is an extension of the original DSSS (Direct Sequence Spread Spectrum) PHY that supports data rates up to 54 Mbps in the 2.4 GHz band. HR/DSSS stands for High Rate/Direct Sequence Spread Spectrum, which is another extension of DSSS that supports data rates up to 11 Mbps in the 2.4 GHz band. HT stands for High Throughput, which is a new PHY that supports data rates up to 600 Mbps in both the 2.4 GHz and 5 GHz bands. HT uses OFDM (Orthogonal Frequency Division Multiplexing) as its modulation scheme, but it also supports legacy DSSS and ERP devices by using a dual preamble and header structure that allows backward compatibility. References: , Chapter 3, page 103; , Section 3.1


NEW QUESTION # 110
What authentication method is referenced in the 802.11-2016 and 802.11-2020 specifications and is recommended for robust WI-AN client security?

Answer: C

Explanation:
The authentication method that is referenced in the 802.11-2016 and 802.11-2020 specifications and is recommended for robust WLAN client security is 802.1X/EAP. 802.1X/EAP stands for IEEE 802.1X Port-Based Network Access Control with Extensible Authentication Protocol and is a framework that provides strong authentication and dynamic encryption key generation for WLAN clients. 802.1X/EAP involves three parties: the supplicant (the client), the authenticator (the AP or the controller), and the authentication server (usually a RADIUS server). The supplicant sends its credentials (such as username and password, certificate, or token) to the authenticator, which forwards them to the authentication server. The authentication server verifies the credentials and sends a response to the authenticator, which grants or denies access to the supplicant. The authentication server also generates a master key that is used to derive encryption keys for the data frames between the supplicant and the authenticator. 802.1X/EAP supports various EAP methods that offer different levels of security and flexibility, such as EAP- TLS, EAP-PEAP, EAP-TTLS, EAP-FAST, and EAP-SIM. SSL, IPSec, and WEP are not authentication methods, but rather encryption or security protocols that are not specific to WLANs or referenced in the 802.11 specifications.


NEW QUESTION # 111
What 802.11 network configuration would result in multiple stations broadcasting Beacon frames with the same BSSID but with different source addresses?

Answer: D

Explanation:
An IBSS is used instead of a BSS is a network configuration that would result in multiple stations broadcasting Beacon frames with the same BSSID but with different source addresses. An IBSS (Independent Basic Service Set) is a type of WLAN that does not use an AP but rather allows stations to communicate directly with each other in a peer-to-peer manner. An IBSS is also known as an ad-hoc network or a peer-to-peer network. In an IBSS, each station generates its own Beacon frames to announce its presence and capabilities to other stations within range. The Beacon frames have the same BSSID, which is randomly generated by one of the stations when creating the IBSS, but they have different source addresses, which are the MAC addresses of each station's radio interface. The BSSID is used to identify the IBSS and prevent stations from joining other IBSSs with different BSSIDs. References: , Chapter 1, page 25; , Section 1.1


NEW QUESTION # 112
What field within a Beacon frame is used to inform sleeping stations that the AP has buffered broadcast or multicast traffic to be delivered?

Answer: A

Explanation:
The Traffic Indication Map (TIM) is a field included in every Beacon frame that indicates which associated stations, identified by their Association ID, have buffered unicast frames waiting at the AP. A special variant, the Delivery Traffic Indication Map (DTIM), is sent at a configured interval and informs stations that buffered broadcast or multicast traffic will be delivered following that particular beacon. Stations in power save mode wake periodically to check the TIM/DTIM and determine whether they need to retrieve buffered data.


NEW QUESTION # 113
A network administrator notices that an RF signal is bending around the edge of a large obstacle, such as a building, allowing some signal to be received in an area that would otherwise be in an RF shadow. What phenomenon explains this behavior?

Answer: D

Explanation:
Diffraction occurs when an RF wave encounters an obstacle with an irregular or sharp edge, causing the wave to bend around the object. This bending allows some of the signal to reach areas behind the obstruction that would otherwise be blocked, though the signal strength in that shadowed area is typically weaker. Diffraction is more pronounced at lower frequencies, which is one reason 2.4 GHz signals can sometimes propagate around obstacles more effectively than 5 GHz signals.


NEW QUESTION # 114
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