Free Practice Questions for CWNP CWISA-103 Exam

Smart Building Core Benefit: Smart building technologies primarily aim to optimize a building's operational efficiency through automation and data-driven insights.

Efficiency Examples:

Energy Management: Automated lighting and HVAC control based on occupancy and environmental conditions.

Maintenance: Predictive maintenance through IoT sensors reduces downtime.

Space Utilization: Optimization of space allocation based on real-time usage patterns.

References

Smart Buildings: https://en.wikipedia.org/wiki/Smart_building

Articles on Benefits of Smart Buildings: A quick search will yield many resources detailing these advantages.

OFDM vs. OFDMA:

OFDM (Orthogonal Frequency-Division Multiplexing): Divides a channel into multiple subcarriers for data transmission.

OFDMA (Orthogonal Frequency-Division Multiple Access): Extends OFDM by allowing multiple users to share subcarriers simultaneously, improving efficiency and spectral utilization.

References

OFDM: https://en.wikipedia.org/wiki/Orthogonal_frequency-division_multiplexing

OFDMA: https://en.wikipedia.org/wiki/Orthogonal_frequency-division_multiple_access

Signal Strength and Data Rate: In wireless links, weaker signal strength often directly correlates to reduced transmission speeds. Modern wireless technologies use adaptive modulation and coding, sacrificing speed for reliability when signals become weaker.

Noise and Interference: While these can impact performance, they don't inherently decrease simply because signal strength drops.

Latency: Latency can be affected by poor signal, but its primary drivers are distance and network congestion.

Outsourcing Knowledge Transfer: When outsourcing implementation, the service provider has firsthand knowledge of system setup and configuration. Clear documentation ensures this knowledge remains accessible to you after the project is complete.

Ongoing Support: While paid/free support options influence long-term maintenance, they won't substitute missing documentation about the specific setup.

Reducing Future Vendor Reliance: Detailed documentation helps mitigate over-reliance on the service provider for minor changes and troubleshooting, giving you more long-term autonomy.

Proof of Concept: A POC typically happens before outsourcing, and focuses on validating the solution's feasibility, not ensuring smooth knowledge transfer thereafter.

PHP's Cross-Platform Nature: PHP originated for server-side web development, but also has a command-line interface (CLI) enabling its use for scripts and automation tasks.

Other Options:

Some languages are OS-specific (but less frequent with modern scripting languages) .

Many languages work in web or command line, not both like PHP.

Key Modulation Differences:

ASK (Amplitude Shift Keying): Digital data is represented by changes in the amplitude (strength) of a carrier wave.

FSK (Frequency Shift Keying): Digital data is represented by changes in the frequency of a carrier wave.

References

ASK: https://en.wikipedia.org/wiki/Amplitude-shift_keying

FSK: https://en.wikipedia.org/wiki/Frequency-shift_keying

Customization and Integrations: The presence of APIs often suggests a system is integrated with other platforms or has custom-built elements.

Understanding Dependencies: Documenting used APIs helps clarify how different parts of the system interact and where potential issues might arise.

Troubleshooting Efficiency: Detailed API documentation aids in resolving problems, allowing staff to assess interconnected systems effectively.

Knowledge transfer: Future support teams won't have to reverse-engineer the system; documentation ensures smooth handover and understanding.

Browser Ubiquity: JavaScript has a native runtime environment within almost every modern web browser, making it the 'built-in' scripting language for web-based interfaces.

Node-RED: This IoT flow-based programming tool specifically uses JavaScript for its logic and automation functions.

Other Languages:

PHP: Primarily server-side for web applications

Python: Versatile language, used in some back-end IoT functions but not natively in browsers

R: Statistical and data analysis, not typically embedded in wireless solutions

Captive Portals for Guest Access: These are web pages that intercept users' requests before granting full internet access. They often require agreeing to terms, entering basic information, or viewing ads.

Hospitality Fit: Captive portals are simple to deploy, require minimal user setup, and provide control for the hospitality provider (e.g., usage limits).

Why Other Options Are Less Common:

NTLM: Microsoft authentication, mainly for corporate networks, too complex for casual guest use.

Kerberos: Complex authentication for enterprise, overkill for guest Wi-Fi

SIM Cards: Used in cellular devices, not for general Wi-Fi access.