A microservice is not forwarding the JWT token to downstream services. Which issue is the most probable cause?

medium📝 Analysis Q6 of 15

Microservices - Authentication and Authorization

AThe JWT token is encrypted and cannot be read

BThe JWT token is expired and cannot be forwarded

CThe downstream service does not support JWT authentication

DThe service code does not copy the 'Authorization' header when making outbound requests

Step-by-Step Solution

Solution:

Step 1: Check token forwarding
Forwarding requires explicitly copying the 'Authorization' header.
Step 2: Token expiration
Expiration affects validation, not forwarding.
Step 3: Downstream support
Does not prevent forwarding, only validation.
Step 4: Encryption
JWT tokens are base64 encoded, not encrypted.
Final Answer:
The service code does not copy the 'Authorization' header when making outbound requests -> Option D
Quick Check:
Forwarding requires explicit header copy. [OK]

Quick Trick: Always copy 'Authorization' header to downstream calls [OK]

Common Mistakes:

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