A microservice configured for Mutual TLS fails to authenticate its peer, and logs indicate 'unable to verify certificate'. What is the most probable cause?

medium📝 Analysis Q6 of 15

Microservices - Service Mesh

AThe microservice is using an unsupported TLS version

BThe microservice's private key is missing

CThe network connection is blocked by firewall

DThe peer's certificate is not signed by a CA in the local trust store

Step-by-Step Solution

Solution:

Step 1: Analyze the error message
'Unable to verify certificate' indicates trust validation failure.
Step 2: Identify trust store role
The trust store must contain the CA certificate that signed the peer's certificate for verification.
Final Answer:
The peer's certificate is not signed by a CA in the local trust store -> Option D
Quick Check:
Trust store must include CA certs to verify peers [OK]

Quick Trick: Missing CA cert in trust store causes verification failure [OK]

Common Mistakes:

MISTAKES

Confusing private key issues with trust failures
Assuming network issues cause certificate verification errors
Ignoring the importance of CA certificates in trust store

Master "Service Mesh" in Microservices

9 interactive learning modes - each teaches the same concept differently

Learn Why Deep Arch Try Challenge Design Recall Scale

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions

More Microservices Quizzes

A microservice configured for Mutual TLS fails to authenticate its peer, and logs indicate 'unable to verify certificate'. What is the most probable cause?

Step 1: Analyze the error message

Step 2: Identify trust store role

Final Answer:

Quick Check:

Want More Practice?