CDN Cost Optimization & Traffic Management 3

Question 1

What CDN cost optimization technique involves compressing text-based responses before delivering them to end users?

Accepted Answer

Gzip or Brotli compression

Answer

Gzip and Brotli compression reduce the byte size of text responses, directly lowering egress data transfer costs.

Question 2

A media company streams live events globally. Which CDN traffic management strategy best handles sudden audience spikes?

Accepted Answer

Multi-CDN failover with auto-scaling

Answer

Multi-CDN failover with auto-scaling distributes load across providers and dynamically adjusts capacity, preventing bottlenecks during live event spikes.

Question 3

Which HTTP header instructs a CDN to NOT cache a response and always fetch fresh content from origin?

Accepted Answer

Cache-Control: no-store

Answer

Cache-Control: no-store tells both CDN edge nodes and browsers not to store any version of the response, forcing every request to the origin.

Question 4

A global e-commerce site wants to reduce CDN costs for product images. Which combination of techniques provides the greatest savings?

Accepted Answer

Convert images to WebP format and set long cache TTLs

Answer

WebP provides superior compression ratios versus JPEG/PNG, and long TTLs maximize cache hit rates, both reducing bytes transferred and origin requests.

Question 5

What is the primary purpose of CDN traffic shaping in a cost optimization context?

Accepted Answer

To prioritize or throttle specific traffic types to control bandwidth costs

Answer

Traffic shaping lets CDN operators throttle lower-priority traffic and reserve bandwidth for high-value content, preventing unexpected egress cost overruns.

(CDN) Content Delivery Network Certification Practice Test

(CDN) Content Delivery Network Certification Practice Test

CDN Cost Optimization & Traffic Management 3