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You want to request an access token using client credentials flow but your client_id contains special characters like '@' and '#'. How should you send the client_id in the request?

hard🚀 Application Q8 of Q15
Rest API - Authentication and Authorization
You want to request an access token using client credentials flow but your client_id contains special characters like '@' and '#'. How should you send the client_id in the request?
AURL-encode the client_id before sending in Authorization header
BSend client_id as plain text in JSON body
CInclude client_id in URL query without encoding
DReplace special characters with underscores before sending
Step-by-Step Solution
Solution:
  1. Step 1: Understand encoding requirements for special characters

    Special characters must be URL-encoded to avoid errors in HTTP headers.
  2. Step 2: Apply encoding to client_id in Authorization header

    Encode client_id before base64 encoding in Authorization header to preserve characters.
  3. Final Answer:

    URL-encode client_id before sending in Authorization header -> Option A
  4. Quick Check:

    Encode special chars in client_id for safe transmission [OK]
Quick Trick: Always URL-encode special chars in client_id before sending [OK]
Common Mistakes:
MISTAKES
  • Sending special chars unencoded causing errors
  • Modifying client_id by replacing chars
  • Sending client_id in URL query insecurely

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