PCNE Configuring Network Services Practice Question
A company uses Traffic Director with Envoy sidecars to manage traffic in their service mesh. They want to perform canary deployments where 10% of traffic goes to the new version and 90% to the stable version. Which TWO Traffic Director resources should they configure? (Choose two.)
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
✓
A TrafficDirectorService with a traffic splitting policy (weighted clusters)
Traffic splitting is achieved through TrafficDirectorService with a weighted traffic policy. BackendService defines the service backends. Envoy Route Configuration is used for routing, but Traffic Director configures it automatically. HTTPRoute and gRPC filters are not used for traffic splitting.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
A TrafficDirectorService with a traffic splitting policy (weighted clusters)
Why this is correct
Defines the weighted distribution of traffic between versions.
- ✓
A BackendService defining the backend (version) for each traffic pool
Why this is correct
Each version is represented as a backend service.
- ✗
A gRPC filter in the Envoy configuration
Why it's wrong here
Not used for traffic splitting.
- ✗
An HTTPRoute resource
Why it's wrong here
Not a Traffic Director resource; HTTPRoute is used in other contexts.
- ✗
An Envoy Route Configuration with weighted clusters
Why it's wrong here
Traffic Director automatically generates route configurations; you don't configure them directly.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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