Which device caches web pages to speed up loading times and reduce network bandwidth?

Which device caches web pages to speed up loading times and reduce network bandwidth?

• A. Proxy Server
• B. Router
• C. Switch
• D. DNS Server

Answer: (A)

Caching web content happens when a middleman on the network stores copies of web pages so repeated requests can be served quickly from the local cache. A proxy server acts as that middleman: it fetches pages on behalf of clients and keeps copies locally. When the same page is requested again, the proxy can deliver the cached copy without reaching the remote web server, which speeds up loading and cuts down on data transferred over the network. This works well because web pages often contain shared resources (images, scripts, styles) that many users request, so storing them once at the proxy level yields big bandwidth and latency benefits. The proxy uses caching rules defined by HTTP headers to decide when a cached item is still fresh or needs to be revalidated with the origin server. In contrast, a router’s job is to move packets between networks, a switch focuses on forwarding frames within a local network, and a DNS server caches domain lookups to speed up name resolution—not the actual page content. That’s why a proxy server is the best fit for caching web pages to accelerate load times and reduce bandwidth.

Caching web content happens when a middleman on the network stores copies of web pages so repeated requests can be served quickly from the local cache. A proxy server acts as that middleman: it fetches pages on behalf of clients and keeps copies locally. When the same page is requested again, the proxy can deliver the cached copy without reaching the remote web server, which speeds up loading and cuts down on data transferred over the network.

This works well because web pages often contain shared resources (images, scripts, styles) that many users request, so storing them once at the proxy level yields big bandwidth and latency benefits. The proxy uses caching rules defined by HTTP headers to decide when a cached item is still fresh or needs to be revalidated with the origin server.

In contrast, a router’s job is to move packets between networks, a switch focuses on forwarding frames within a local network, and a DNS server caches domain lookups to speed up name resolution—not the actual page content. That’s why a proxy server is the best fit for caching web pages to accelerate load times and reduce bandwidth.