You are troubleshooting a problem with a wireless solution that uses MQTT. At what Layer of the OSI Model should troubleshooting begin?

• A.Layer 1
• B.Layer 5
• C.Layer 6
• D.Layer 4

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What is the spacing between ZigBee channels when operating in the 2.4 GHz frequency band?

• A.1 MHz
• B.5 MHz
• C.25 MHz
• D.2 MHz

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What best describes a proof of concept implementation?

• A.Testing for software bugs that might impact the end user
• B.A limited-scope prototype deployment in the target environment to test and demonstrate capabilities in the real world
• C.A full-scale test deployment in the target environment for users to work with
• D.A demonstration provided by the manufacturer in their facility

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What is a common characteristic of Industrial IoT (IIoT) devices that is not a characteristic of all IoT devices?

• A.Use of standardized protocols
• B.Ruggedized devices constructed for operating in harsh environments
• C.Transmission of small amounts of data throughout the day
• D.Use of proprietary protocols

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What is a fundamental structural feature of JSON? (Choose the single best answer.)

• A.It is a compressed data structure optimized for low bandwidth applications
• B.It is a data structure stored in MySQL databases for configuration management
• C.It is an encrypted data structure optimized for secure applications
• D.It is a plaintext data structure that consists of free-form Key:Value pairs

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