How are Content delivery networks CDN on the internet useful 1 They reduce latency and congestion an...........

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How are Content delivery networks (CDN), on the internet, useful ?

1.They reduce latency and congestion and improve the overall efficiency in the delivery of internet traffic.

2.They offer a Secure Socket Layer for communication between various parties on the web.

3.They create Virtual Private Networks (VPN) on servers that can be only accessed by a dedicated key.

Select the correct answer using the codes below.

1 only

2 and 3 only

1 and 3 only

None of the above

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Explanation:

CDN is a system of distributed servers (network) that deliver pages and other Web content to a user, based on the geographic locations of the user, the origin of the webpage and the content delivery server.
This service is effective in speeding the delivery of content of websites with high traffic and websites that have global reach. The closer the CDN server is to the user geographically, the faster the content will be delivered to the user. CDNs also provide protection from large surges in traffic.
Servers nearest to the website visitor respond to the request. The content delivery network copies the pages of a website to a network of servers that are dispersed at geographically different locations, caching the contents of the page. This makes the entire process of accessing a website faster.

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