200-901 Cisco Platforms and Development Practice Question

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✗

  personId

  Why it's wrong here

  personId identifies a Webex user account, but the stem specifies addressing the recipient by email address, which requires the toPersonEmail parameter. personId is correct when the sender already knows the person's Webex identifier rather than their email.

• ✓

  toPersonEmail

  Why this is correct

  The Webex messages endpoint accepts toPersonEmail to address a recipient directly by their email address. This satisfies the stem's requirement to send a message to a specific person identified by email, rather than by person ID or room ID.

• ✗

  recipientEmail

  Why it's wrong here

  recipientEmail is not a valid field of the POST /v1/messages request body; the API rejects unknown parameters. It is tempting because the goal is addressing a person by email, but Webex expects the resolved person identifier instead.

• ✗

  roomId

  Why it's wrong here

  roomId targets an existing Webex space, not an individual, so the message would post to a room rather than reach the person directly. It is the correct parameter when sending to a known space by its identifier.

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