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CWNP CWNA-109 Exam Syllabus Topics:

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

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CWNP Wireless Network Administrator (CWNA) Sample Questions (Q157-Q162):

NEW QUESTION # 157
802.11ax (HE) introduces Resource Units that can be used to allow communications with multiple devices at the same time, on the same channel, in the same BSS. What feature of 802.1 lax provides this functionality?

Answer: C

Explanation:
The feature of 802.11ax (HE) that provides this functionality is OFDM A . OFDMA stands for Orthogonal Frequency Division Multiple Access and is a technology that allows multiple devices to communicate simultaneously on the same channel in the same BSS. OFDMA works by dividing a channel into smaller subchannels called Resource Units (RUs), which are composed of groups of subcarriers or tones. Each RU can be assigned to a different device based on its bandwidth requirement and signal quality. This way, OFDMA can increase the efficiency and capacity of the channel by reducing overhead, contention, and latency. OFDMA can also support both uplink and downlink multi-user transmissions using trigger frames and buffer status reports.
6 GHz support, TWT, and Wi-Fi-LTE are not features of 802.11ax that provide this functionality.


NEW QUESTION # 158
What is appended to the end of each 802.11 data frame after the payload?

Answer: C

Explanation:
The FCS (Frame Check Sequence) is appended to the end of each 802.11 data frame after the payload. The FCS is a 4-byte field that contains a CRC-32 (Cyclic Redundancy Check) value that is calculated based on the contents of the MAC header and the payload of the frame. The FCS is used by the receiver to verify the integrity of the frame and to detect any errors or corruption that may have occurred during transmission. If the FCS does not match with the expected value, the frame is discarded by the receiver. References: , Chapter 4, page 139; , Section 4.2


NEW QUESTION # 159
You are troubleshooting a controller-based AP that is unable to locate the controller. DHCP is not use and the controller is located at 10.10.10.81/24 while the AP is on the 10.10.16.0/24 network. What should be inspected to verify proper configuration?

Answer: B

Explanation:
What should be inspected to verify proper configuration is DNS. DNS stands for Domain Name System and is a service that resolves hostnames to IP addresses. In a controller-based AP deployment, DNS can be used to help the AP locate the controller by using a predefined hostname such as CISCO-CAPWAP-CONTROLLER or aruba-master. The AP sends a DNS query for this hostname and receives an IP address of the controller as a response. Therefore, if DNS is not configured properly or if there is no DNS entry for the controller hostname, the AP may not be able to locate the controller. NTP, BOOTP, and AP hosts file are not relevant for this scenario. References: [CWNP Certified Wireless Network Administrator Official Study Guide:
ExamCWNA-109], page 374; [CWNA: Certified Wireless Network Administrator Official Study Guide:
ExamCWNA-109], page 364.


NEW QUESTION # 160
In an 802.11 2.4 GHz system, what 22 MHz channels are considered non-overlapping?

Answer: C


NEW QUESTION # 161
What facts are true regarding controllers and APs in a Split MAC architecture?

Answer: B

Explanation:
The fact that is true regarding controllers and APs in a Split MAC architecture is that an IP tunnel is established between the AP and controller for AP management and control functions. A Split MAC architecture is a WLAN architecture where some of the MAC layer functions are performed by the APs (such as encryption, decryption, and frame acknowledgement) and some are performed by the controllers (such as authentication, association, roaming, and QoS). To communicate with each other, the APs and controllers establish an IP tunnel that carries the management and control frames between them. The IP tunnel can use protocols such as Lightweight Access Point Protocol (LWAPP) or Control And Provisioning of Wireless Access Points (CAPWAP). References: [CWNP Certified Wireless Network Administrator Official Study Guide: ExamCWNA-109], page 372; [CWNA: Certified Wireless Network Administrator Official Study Guide: ExamCWNA-109], page 362.


NEW QUESTION # 162
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