PCA Question 87

Community Discussion

Written by other learners. Comments can disagree with the marked answer — check the official documentation when in doubt.

• Chose A5

  Cache Keys and Protocols: Cloud CDN uses cache keys to identify and store content in its cache. By default, the protocol (HTTP or HTTPS) is included in the cache key. This means that the same content served over HTTP and HTTPS will be cached separately, reducing the cache hit ratio. Omitting the Protocol: Customizing the cache keys to omit the protocol allows Cloud CDN to treat HTTP and HTTPS requests for the same content as identical. This increases the chance of a cache hit, as the CDN can serve the cached content regardless of the protocol used in the request. Improved Cache Hit Ratio: By consolidating the cache entries for HTTP and HTTPS versions of the content, you effectively increase the cache hit ratio. This leads to better performance, reduced latency, and lower costs.

• 1

  Answer is D

• 1

  Incorrect. While Cloud Storage is often an excellent origin for static content, simply migrating the content from a Compute Engine instance group to a Cloud Storage bucket does not by itself guarantee an improved cache hit ratio. The hit ratio depends on how the content is served and cached, not just where it's stored. The core issue remains how the cache keys are configured.