3.2 Configuring Cloud CDN. Considerations Include: PROFESSIONAL-CLOUD-NETWORK-ENGINEER Practice Questions (Page 3)

Questions 11–15

1. 11foundation · easy

   What is the purpose of an internet network endpoint group (NEG) in Cloud CDN?

   • ATo enable Cloud CDN on a managed instance group.
   • BTo route traffic to a Cloud Storage bucket.
   • CTo provide a private IP address for a VM.
   • DTo use an external endpoint as an origin for Cloud CDN.
   Reveal Solution Discussion Select an answer first
2. 12expert · hard

   A company runs a web application on Cloud Run that serves both static assets (immutable) and dynamic API responses (change frequently). They want to use Cloud CDN to reduce latency. The static assets are served from the same Cloud Run service. The team wants to optimize caching for both types of content. What is the best approach?

   • AUse two backend services: one for static assets with a long TTL and one for dynamic API responses with a short TTL, both pointing to the same Cloud Run service.
   • BUse a single backend service with a TTL of 3600 seconds and invalidate the cache for dynamic responses when they change.
   • CUse a single backend service with a TTL of 60 seconds for all content.
   • DSet the `Cache-Control` header on dynamic responses to `no-store`.
   Reveal Solution Discussion Select an answer first
4. 13application · medium

   A company uses a third-party object storage service (not Google Cloud Storage) to serve downloadable files. They want to use Cloud CDN to cache these files and improve download speeds for users worldwide. The third-party storage provides HTTP(S) access via a public URL. What is the correct configuration?

   • ACreate an internet NEG with the third-party storage's public endpoint and attach it to a backend service with Cloud CDN.
   • BCreate a backend bucket and point it to the third-party storage URL.
   • CEnable Cloud CDN directly on the third-party storage's domain.
   • DUse a Cloud Storage bucket as a proxy and copy files there periodically.
   Reveal Solution Discussion Select an answer first
5. 14application · medium

   A media company serves video thumbnails from a managed instance group (MIG) behind a global external Application Load Balancer. They enable Cloud CDN on the backend service. After deploying new thumbnail images to the MIG, users in some regions still see old images for up to an hour. The operations team needs to make the new images available globally as quickly as possible after each deployment. What should they do?

   • ASet the Cloud CDN cache mode to FORCE_CACHE_ALL with a TTL of 0 seconds.
   • BRestart all instances in the managed instance group to clear the origin cache.
   • CRun `gcloud compute url-maps invalidate-cdn-cache` with the URL prefix of the thumbnail directory.
   • DDelete and recreate the backend service to reset the CDN configuration.
   Reveal Solution Discussion Select an answer first
6. 15foundation · easy

   Which load balancer component is used to route traffic to a managed instance group origin with Cloud CDN?

   • ABackend service
   • BTarget proxy
   • CBackend bucket
   • DURL map
   Reveal Solution Discussion Select an answer first