Given this API change: adding a new required field to the user creation endpoint without versioning, what is the likely result for existing clients?

medium📝 Predict Output Q13 of 15

Rest API - Versioning Strategies

AThe API will automatically update clients to send the new field.

BExisting clients will continue working without any issues.

CThe API will ignore the missing field and use a default silently.

DExisting clients will break because they don't send the new required field.

Step-by-Step Solution

Solution:

Step 1: Understand impact of adding required fields without versioning
Adding a required field means clients must send it or the API rejects the request.
Step 2: Predict behavior for old clients
Old clients don't send the new field, so their requests fail, causing breakage.
Final Answer:
Existing clients will break because they don't send the new required field. -> Option D
Quick Check:
Adding required field breaks old clients = D [OK]

Quick Trick: New required fields break old clients without versioning [OK]

Common Mistakes:

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