Explanation:
Enabling CloudFront Origin Shield (Option A) adds an additional caching layer between the edge locations and the origin, which consolidates caching and significantly reduces the load on the origin while potentially improving cache hit ratios. Increasing the TTL (Time to Live) values (Option E) ensures that objects are retained in the cache for longer periods, directly leading to an increased cache hit ratio since fewer requests will have to fetch data from the origin. Other options like changing protocol policies or enabling automatic compression do not directly increase cache hit ratios.
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Question 30.
A SysOps administrator notices that the cache hit ratio for an Amazon CloudFront distribution is less than 10%. The SysOps administrator needs to increase the cache hit ratio for the distribution, improve network performance, and reduce the load on the origin. Which combination of actions should the SysOps administrator take to meet these requirements? (Choose two.)
A
Enable CloudFront Origin Shield for the required AWS Regions.
B
Change the viewer protocol policy to use HTTPS only.
C
Add a second origin. Create an origin group that includes both origins. Activate CloudFront origin failover.
D
Turn on automatic compression of objects in the cache behavior settings.
E
Increase the CloudFront TTL values in the cache behavior settings.
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