Question 947 of 964
CCSP Cloud Application Security Practice Question
A security architect is designing a cloud-native application using microservices. They decide to implement mutual TLS (mTLS) for service-to-service communication in a Kubernetes cluster with hundreds of services. What is the primary challenge in managing mTLS certificates in this dynamic environment?
⚠ Common exam trap
Test-takers frequently confuse the operational challenge of certificate lifecycle management with perceived performance issues (latency) or compatibility concerns, when in fact mTLS is designed to work efficiently with modern protocols and the real difficulty is maintaining trust in a rapidly changing service mesh.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Certificate revocation and rotation
In a dynamic Kubernetes environment with hundreds of microservices, mTLS certificates must be frequently rotated and revoked to maintain security, especially as services scale up/down and pods are replaced. Manual certificate management is impractical, so automated solutions like SPIFFE/SPIRE or Istio’s Citadel are required to handle the lifecycle at scale. The primary challenge is not the encryption overhead but the operational complexity of ensuring every service has a valid, non-expired certificate and that compromised certificates can be promptly revoked across the mesh.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
High latency due to encryption overhead
Why it's wrong here
Latency overhead is minimal, especially with hardware acceleration.
- ✓
Certificate revocation and rotation
Why this is correct
Dynamic environments require automated, frequent certificate refreshes and effective revocation.
- ✗
Incompatibility with HTTP/2
Why it's wrong here
mTLS is fully compatible with HTTP/2.
- ✗
Increased complexity in load balancer configuration
Why it's wrong here
Load balancers can handle mTLS but certificate management is a broader challenge.
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Last reviewed: Jun 24, 2026
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