CWNP CWISA-103 Exam Dumps

LoRa:This refers to the underlying radio modulation technique using Chirp Spread Spectrum (CSS). It defines how data is physically encoded onto the wireless signal.

LoRaWAN:This is the network protocol built on top of LoRa. It manages device communication, network topology, and aspects like security. It operates at the MAC sublayer of the Data Link layer (Layer 2) of the OSI model

LoRa vs. LoRaWAN:Key takeaway is that LoRa is the physical layer technology, while LoRaWAN adds the networking layer for management.

LoRa Modulation:Technical explanations of Chirp Spread Spectrum (CSS).

LoRaWAN Specification:Official documentation detailing the network architecture and MAC layer functions.

OSI Model:Descriptions of the Data Link layer and its role in networking.

Encryption vs. Other Options:

Access Control:Limits who can access data, but doesn't make it unreadable.

Authentication:Validates user/device identity, but not focused on data confidentiality.

Authorization:Determines the actions a user is allowed, separate from securing the data itself.

How encryption works:Encryption uses algorithms and keys to turn plaintext into unreadable ciphertext. Only those with the correct key can decrypt it.

Data in motion vs. data at rest:Encryption protects sensitive information both when transmitted over the wireless network and when stored on devices.

Encryption standards and protocols:Resources on common wireless encryption types (WPA2, WPA3, TLS) and their implementation.

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

JavaScript (Browser Compatibility):Documentation of its near-universal support

Node-RED (Programming Model):Descriptions of how it uses JavaScript for node logic.

IIoT Environments:Industrial IoT (IIoT) often involves deployment in harsh environments (factories, plants, outdoor sites) with:

Extreme temperatures

Dust & Vibrations

Exposure to chemicals or moisture

Ruggedization:IIoT devices are designed to withstand these conditions, ensuring reliability and longevity.

Reference

IIoT:https://en.wikipedia.org/wiki/Industrial_Internet_of_things

Rugged Devices:Articles on ruggedized electronics will emphasize their importance in industrial settings.

Perception Layer:The foundation of an IoT system, it consists of sensors and actuators that:

Sense:Collect data about the environment or object being monitored.

Actuate:Potentially make changes based on commands (e.g., a smart valve opening/closing).

Transmit:Send gathered data to upper layers for processing.