Describe Steps to Build a Custom Dashboard to Present Data Collected from Cisco APIs 350-901 Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   Which of the following is a common way for a backend service to expose data to a dashboard frontend?

   • ABy embedding the data directly into the HTML page
   • BBy writing data to a CSV file that the frontend reads directly
   • CBy providing a RESTful API that returns JSON data
   • DBy sending data via email to the frontend
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2. 7application · medium

   A dashboard displays the number of active Webex meetings over time. The backend fetches data from the Webex API, which returns timestamps in ISO 8601 format with timezone offsets. The frontend charting library expects Unix timestamps in milliseconds. What should the backend do to prepare the data for the frontend?

   • ASend the ISO 8601 strings to the frontend and let the charting library convert them.
   • BStore the timestamps as strings in the database and display them as labels on the chart.
   • CConvert the ISO 8601 strings to Unix timestamps in milliseconds before sending the JSON response.
   • DRemove the timezone offset from the timestamps to simplify the data.
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4. 8application · medium

   A dashboard aggregates data from Cisco DNA Center and Cisco Meraki. DNA Center returns interface utilization as a percentage (e.g., 45.2), while Meraki returns it as a string like '45.2%'. The frontend charting library expects numeric values. What is the best way to handle this discrepancy in the backend?

   • APass the raw values to the frontend and let the charting library parse them automatically.
   • BConvert all values to a common numeric format (e.g., float) and strip any non-numeric characters before sending to the frontend.
   • CStore the raw values in a database and display them as-is in the dashboard without any transformation.
   • DUse a frontend library that can handle both strings and numbers without any preprocessing.
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5. 9expert · hard

   A dashboard backend fetches data from Cisco Meraki API every 5 minutes and stores it in a time-series database. The developer notices that the API occasionally returns duplicate records for the same device and timestamp. The dashboard should display the most recent value. Which approach should the developer implement?

   • AIgnore the duplicates and rely on the next fetch to correct the data.
   • BDelete all records for the device and re-insert the new data.
   • CAppend all records to the database and let the frontend deduplicate them.
   • DUse the database's upsert feature to overwrite existing records with the same timestamp and device ID.
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6. 10foundation · easy

   What is the purpose of pagination when retrieving data from Cisco APIs?

   • ATo authenticate the user before allowing access to the data
   • BTo increase the speed of the API response by compressing the data
   • CTo break large result sets into smaller, manageable pages
   • DTo sort the data in a specific order before returning it
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