Which statement about CDNs describes their role in web content delivery?

Which statement about CDNs describes their role in web content delivery?

• A. CDNs distribute content across globally dispersed servers to reduce latency and improve load times.
• B. CDNs store all content exclusively on the origin server.
• C. CDNs are used only for video streaming.
• D. CDNs replace the need for DNS.

Answer: (A)

The main idea being tested is how CDNs improve web content delivery by bringing content closer to users. A CDN works by distributing copies of web assets across a network of edge servers located around the world. When someone requests a page, the CDN serves those assets from the nearest edge server, which cuts the distance data travels, lowers latency, and speeds up page loads. This behavior is exactly what the statement describes: content is distributed across globally dispersed servers to reduce latency and improve load times. CDNs aren’t just about storing everything on the origin server, and they aren’t limited to video streaming. They cache and deliver various types of content to reduce load on the origin and speed up delivery. They also don’t replace DNS; DNS remains essential for directing requests to the CDN, often via edge endpoints, rather than eliminating the need for name resolution.

The main idea being tested is how CDNs improve web content delivery by bringing content closer to users. A CDN works by distributing copies of web assets across a network of edge servers located around the world. When someone requests a page, the CDN serves those assets from the nearest edge server, which cuts the distance data travels, lowers latency, and speeds up page loads. This behavior is exactly what the statement describes: content is distributed across globally dispersed servers to reduce latency and improve load times.

CDNs aren’t just about storing everything on the origin server, and they aren’t limited to video streaming. They cache and deliver various types of content to reduce load on the origin and speed up delivery. They also don’t replace DNS; DNS remains essential for directing requests to the CDN, often via edge endpoints, rather than eliminating the need for name resolution.