Understanding functional and technical aspects of CWNA® - Certified Wireless Network Administrator Business Principles and Practices

The following will be discussed in CWNP CWNA-108 exam dumps:

• Frequency bands used by the 802.11 PHYs
• Throughput vs. data rate
• Bandwidth
• Explain basic use case scenarios for 802.11 wireless networks
• Wi-Fi Alliance
• OFDM
• IEEE
• Wi-Fi 5 - VHT - 802.11ac
• Wi-Fi 6 - HE - 802.11ax
• DSSS - 802.11
• Describe the OSI model layers affected by the 802.11-2016 standard and amendments
• Primary channels
• Wireless Ad-Hoc (IBSS)
• Transmit Power Control (TPC)
• OFDMA and Resource Units
• ERP - 802.11g
• Wireless LAN (WLAN) - BSS and ESS
• QPSK
• Dynamic Frequency Selection (DFS)
• Regulatory domains and agencies
• Explain the roles of WLAN and networking industry organizations (CHAPTER 1)
• Available channels
• CWNP
• IETF
• Wi-Fi 4 - HT - 802.11n
• Understand spread spectrum technologies, Modulation and Coding Schemes (MCS)
• Wireless bridging
• BPSK
• OFDM - 802.11a
• Regulatory power constraints
• HR-DSSS - 802.11b
• Guard Interval
• Adjacent overlapping and non-overlapping channels
• Identify and apply 802.11 WLAN functional concepts
• Wireless Mesh
• Explain and apply the various Physical Layer (PHY) solutions of the IEEE 802.11-2016 standard as amended including supported channel widths, spatial streams, data rates
• QAM (16, 64, 256,1024)
• Identify and comply with regulatory domain requirements and constraints (specifically in 2.4 GHz and 5 GHz)

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Exam Syllabus

The CWNA-108 exam covers seven knowledge domains. Each of these areas has detailed topics and subtopics that must be understood to improve your performance in the certification test. The highlights of these sections are as follows:

RF Technologies: 15%

This is the first topic to deal with that will evaluate the following skills that you need to possess:

• Describe and use the functionality of the RF antennas, accessories, and antenna systems: The area includes highly directional antennas, Omni-directional and semi-directional antennas, RF connectors & cables, Antenna orientation, grounding wires/rods, and Lightning arrestors.
• Apply the fundamental concepts of the Radio Frequency measurement and mathematics: This subtopic focuses on Watt & milliwatt, RSSI, SNR, Decibel, Noise floor, dBm & dBi, as well as EIRP;
• Establish RF signal attributes to antennas: This means that you should know about passive gain, MINO, radio chains, polarization, beamwidths, transmit beamforming, passive gain, spatial multiplexing, and maximal ratio combining;
• Identify and describe the basic attributes of Radio Frequency (RF) and RF behaviors: The concepts covered in this area include multipath & RF interference, attenuation, amplification, return loss, gain & loss, free space path loss, and absorption, among others;

WLAN Devices and Protocols: 20%

The next section is all about the measurement of the following skills:

• Describe the 802.11 channel access techniques;
• Explain the functions and elements that structure the 802.11 wireless service site;
• Describe the process that is utilized in locating and connecting to WLANs;
• Identify and describe the frame format for MAC;
• Install and select WLAN devices, management, and control as well as explain their features.
• Define the terminology associated with 802.11 PHY and MAC;
• Identify and describe the functions of three core 802.11 frame formats;
• Describe the operations of 802.11 MAC;

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Domain Details for CWNP CWNA-108

When it comes to particulars of this test, they are as follows:

• WLAN Troubleshooting

  This part covers common tools for troubleshooting that are often used within WLANs. Issues addressed by such a topic revolve around the usage of protocol analyzers to troubleshoot tasks, the usage of spectrum analyzers in identifying interference sources, and more. The last area looks at the identification and troubleshooting of wireless problems.

• RF Technologies

  In particular, RF or Radio Frequency technologies concern the defining and explaining of basic features of RF in addition to RF behavior. Under this category, one will be learning about wavelength, frequency, phase, amplitude, sine waves, RF propagation & coverage, reflection, refraction, scattering, and diffraction, multipath as well as RF interference, gain & loss, amplification, absorption, and more. Also, to be learned is the application of fundamental concepts relating to RF measurements and mathematics. This details watt & milliwatt, decibel (dB), noise floor, SNR, RSSI, EIRP, and others. The next part is focused on identifying RF signal features according to the way they relate to antennas. The areas it touches on include beamwidths, RF in addition to a physical line of sight & Fresnel zone clearance, polarization, passive gain, radio chains, spatial multiplexing (SM), and MIMO, among others. The other domain covered is centered on RF antennas, antenna-related systems, as well as accessories functionality. This covers antennas that are omni-directional, highly directional, and semi-directional. It also covers antenna orientation, lightning arrestors as well as grounding rods or wires, RF cables & connectors, and more.

• WLAN Network Infrastructure & Design Concepts

  This section is about the implementation of Power over Ethernet (PoE), the advantages, constraints, and differences of various infrastructures for WLAN, design considerations related to common deployments within wireless that include coverage needs, roaming considerations, capacity, security, throughput, and awareness on common proprietary elements relating to wireless networks. Another field is about considering and configuring the needed services for networks that are supporting wireless ones.

• RF Validation

  Under such a topic, candidates will be looking at verifying and documenting that design demands are met, including roaming, coverage, throughput, and connectivity alongside a validation survey for post-implementation. Also, to consider is the location and identification of sources associated with RF interference. Next is dealing with the performance of app testing to enable the validation of WLAN performance, which captures the network in addition to service availability, VoIP testing, throughput testing, and others. The last area to get into concerns the basic features associated with validation tools. Particularly, this explains using throughput testers in validating tasks, using validation software for wireless scanners, and using protocol analyzers to validate tasks, among other issues.

• WLAN Protocols & Devices

  This sector touches on the elements as well as functions that constitute an 802.11 wireless service set, terminology that relates to 802.11 MAC & PHY, MAC frame design, and the purpose of the three major frame types of 802.11. Also, it scrutinizes the process followed when locating and connecting to WLANs, access techniques for 802.11 channel, 802.11 MAC functioning, and the features, selection, and installation of WLAN gadgets, control, and the management of systems.

• Security for WLAN Network

  Included in the topic is the matter of the identification of weak options of security that shouldn't be utilized in WLANs for the enterprise. Also, included here is the identification and configuration of efficient security mechanisms targeted at enterprise WLANs, basic concepts relating to WPA3 & Opportunistic Wireless Encryption (OWE) as well as enhancements in comparison with WPA2, and common options of security as well as tools used within wireless based networks.

• Standards & Regulations for WLAN

  This tested area includes the roles played by WLAN as well as networking industry companies, the application of differing PHY (Physical Layer) solutions aimed at IEEE 802.11-2016 standard based on the amendment that includes supported widths, spatial streams, and data rate for a channel, and technologies and Modulation & Coding Schemes (MCS) related to spread spectrum. Also, such a domain deliberates OSI layers impacted by 802.11-2016 amendment and standard, the application of WLAN operation concepts for 802.11, and basic scenarios targeting 802.11 wireless networks.

Reference: https://www.cwnp.com/certifications/cwna

CWNP CWNA-108 Exam Syllabus Topics: