Exam Professional Cloud Network Engineer topic 1 question 185 discussion

Actual exam question from Google's Professional Cloud Network Engineer

Question #: 185
Topic #: 1

[All Professional Cloud Network Engineer Questions]

Your team deployed two applications in GKE that are exposed through an external Application Load Balancer. When queries are sent to www.mountkirkgames.com/sales and www.mountkirkgames.com/get-an-analysis, the correct pages are displayed. However, you have received complaints that www.mountkirkgames.com yields a 404 error. You need to resolve this error. What should you do?

A. Review the Service YAML file. Add a new path rule for the * character that directs to the base service. Reapply the YAML.
B. Review the Ingress YAML file. Add a new path rule for the * character that directs to the base service. Reapply the YAML.
C. Review the Ingress YAML file. Define the default backend. Reapply the YAML.
D. Review the Service YAML file. Define a default backend. Reapply the YAML.

Show Suggested Answer

Suggested Answer: C 🗳️

by b0b25 at Feb. 22, 2025, 4:08 a.m.

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n2183712847

3 months, 3 weeks ago

Selected Answer: C

C. Default backend needs to be defined

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Gwendal

5 months ago

Selected Answer: C

https://cloud.google.com/kubernetes-engine/docs/concepts/ingress#default_backend

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RKS_2021

5 months, 3 weeks ago

Selected Answer: C

Explanation: The issue here is that requests to www.mountkirkgames.com (without a path) are returning a 404 error, while requests to specific paths like /sales and /get-an-analysis work fine. This suggests that the Ingress does not have a default backend defined to handle requests that do not match a specific path rule. Why Option C is Correct? Ingress controllers in GKE route traffic based on path rules. If a request does not match any defined path, it is sent to the default backend. A missing default backend results in a 404 error for unmatched requests, which is exactly what is happening here. Solution: Update the Ingress YAML to define a default backend that will handle requests for www.mountkirkgames.com when no specific path is provided.

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