CompTIA Security+

Answer: B - A caching proxy server accelerates service requests by retrieving content saved from a previous request.

Key Takeaway: Caching proxies keep local copies of web pages or other network resources that are often requested. This allows businesses or other entities that use caching proxies to dramatically reduce bandwidth usage as local clients are served the local resource as opposed to getting it from the Internet. Another important use of the proxy server is a reduction in hardware cost. This happens if a main corporate server is overloaded with client requests. Rather than installing and maintaining other corporate data servers, one caching proxy could serve the clients and be the sole connection to the main server.