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300-835 · Question #58

A software engineer must configure a Cisco TelePresence device and custom reporting dashboard to retrieve and display the temperature of the device every minute. Drag and drop the code snippets from…

The Options field in your question is empty ({}), so the specific code snippets weren't included. I'll explain the concept fully so you can map the reasoning to whatever snippets appear on your actual exam. --- Overall Goal The goal is to use Cisco xAPI (the programmatic…

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Question

A software engineer must configure a Cisco TelePresence device and custom reporting dashboard to retrieve and display the temperature of the device every minute. Drag and drop the code snippets from the bottom onto the boxes in the code to collect and send the data by using the xAPI. Not all options are used.

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Explanation

The Options field in your question is empty ({}), so the specific code snippets weren't included. I'll explain the concept fully so you can map the reasoning to whatever snippets appear on your actual exam.


Overall Goal

The goal is to use Cisco xAPI (the programmatic interface for Cisco collaboration devices like TelePresence) to:

  1. Query the device's internal temperature sensor
  2. Send that data to an external dashboard
  3. Repeat this automatically every 60 seconds

This is the correct approach because xAPI is the standard API for Cisco TelePresence/RoomOS devices - it exposes status, configuration, and commands over HTTP, WebSocket, or SSH. Temperature is a read-only Status value, not a command, so you query it via xStatus.


Key Concepts and Steps

1. Authentication / Session Setup

You must authenticate against the device (typically via HTTP Basic Auth or a session token) before any API call is accepted. Skipping this means every subsequent request returns 401 Unauthorized.

2. Query the Temperature - xStatus SystemUnit Hardware Temperature

This is the specific xAPI path for device temperature. Using the wrong path (e.g., a Configuration or Command path) would return no data or an error. The response is a JSON/XML object containing the temperature value in Celsius.

Why this path: xAPI organizes data into three trees:

  • xStatus - read current device state (temperature lives here)
  • xConfiguration - read/write settings
  • xCommand - trigger actions

3. Parse the Response

Extract the numeric temperature value from the returned payload. If skipped, you'd send raw JSON/XML to the dashboard instead of a clean value, likely breaking the display.

4. Send Data to the Dashboard

POST or PUT the temperature value to the reporting dashboard's endpoint (typically a REST API call with the value in the request body or query parameter). Order matters - you must have the value before you can send it.

5. Schedule Repetition Every 60 Seconds

Wrap the query+send logic in a timer/interval (e.g., setInterval in JavaScript, time.sleep(60) in a loop in Python, or a scheduler call). This is what achieves the "every minute" requirement. Without this, data is collected only once.


What Goes Wrong If Steps Are Skipped

Skipped StepResult
AuthenticationAll API calls fail with 401
Correct xStatus pathNo temperature data returned
Parsing the responseDashboard receives malformed data
Sending to dashboardData is collected but never displayed
Scheduling intervalOnly one reading, no recurring updates

Memory Tip

Think of it as AQPSS - Auth, Query, Parse, Send, Schedule. Each step feeds the next - you can't send what you haven't parsed, and you can't parse what you haven't queried.


If you share the actual code snippet options from the drag-and-drop, I can tell you exactly where each one belongs and why.

Topics

#xAPI#TelePresence Device#Sensor Data Collection#Custom Dashboard Integration

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