Final answer:
Option 1: CDNs improve website security.
Step-by-step explanation:
The statement that is true regarding a content delivery network (CDN) is Option 1: CDNs improve website security.
A CDN is a network of servers distributed across different geographical locations. These servers store and deliver website content to users based on their location, which helps improve website performance and security. By storing copies of website content in multiple locations, a CDN can protect against distributed denial of service (DDoS) attacks and mitigate the impact of traffic spikes.
CDNs do not slow down website loading times; in fact, they can improve loading speeds by delivering content from servers closer to the user. CDNs are not limited to small websites; they are used by websites of all sizes to enhance performance and security. Lastly, CDNs are not primarily used for local data storage; their main purpose is to deliver content efficiently.