AZ-104: Microsoft Azure Administrator Full Course - How does CDN work?

This video tutorial explains how Azure CDN works to deliver content quickly and reliably by caching content on edge servers close to users. It covers the process of DNS resolution, routing requests to the nearest point of presence, and fetching files from origin servers if not cached. The importance of time to live (TTL) settings for cache management is discussed, along with how to configure CDN profiles and endpoints in the Azure portal.

What is the primary benefit of using Azure CDN for delivering content?

• Enhanced data security

• Reduced server costs

• Faster and more reliable content delivery

• Increased storage capacity

How does DNS contribute to the CDN process?

• It stores the content on edge servers

• It resolves domain names and routes requests to the best point of presence

• It manages user authentication

• It compresses files for faster delivery

What happens if an edge server does not have the requested file in its cache?

• The file is compressed and stored

• The user is redirected to another server

• The file is fetched from the origin server

• The request is denied

What is the default time to live (TTL) for cached files in Azure CDN?

• 7 days

• 3 days

• 14 days

• 30 days

What must be done to ensure updated content is available via CDN after modification?

• Delete the old content from the origin server

• Wait for the CDN to refresh its content after the TTL

• Manually refresh the CDN cache

• Increase the TTL