AWS Cloudfront

When a user in India requests content through CloudFront for the first time, what happens?

• A) CloudFront edge location fetches from origin, keeps 2 copies - one for user, one for cache.
  

• B) The request goes directly to the origin server in the US
  

• C) CloudFront returns an error since content isn't cached
  

• D) The request is blocked until cache is populated

What does "X-Cache: Hit from CloudFront" indicate?

• A) An error occurred while fetching content
  

• B) Content was fetched from the origin server
  

• C) The cache is about to expire

  
  

• D) Content was served from CloudFront's edge cache

What is the default cache duration (TTL) in CloudFront?

• A) 300 seconds (5 minutes)
  

• B) 1800 seconds (30 minutes)
  

• C) 3600 seconds (1 hour)
  

• D) 86400 seconds (24 hours)

What happens when you create an invalidation with path "/*"?

• A) Only the homepage cache is cleared
  

• B) Cache is cleared from all edge locations globally
  

• C) Cache is cleared only from the nearest edge location
  

• D) The distribution is deleted and recreated

How can you prevent direct access to your EC2 origin server?

• A) Only use HTTPS protocol
  

• B) Configure CloudFront to add custom headers and validate them at the application
  

• C) Disable public IP on EC2
  

• D) Use a different port number

What is the AWS managed prefix list for CloudFront?

• A)com.amazonaws.global.cloudfront.origin-facing
  

• B) com.amazonaws.cloudfront.global

• C) aws.cloudfront.managed.list
  

• D) cloudfront.aws.prefix.list

What does Origin Access Control (OAC) do for S3 buckets?

• A) Makes S3 bucket public
  

• B) Allows CloudFront to access private S3 buckets while keeping them inaccessible from internet
  

• C) Encrypts data in S3
  

• D) Increases S3 transfer speed

For an e-commerce platform with multiple content types, what's the best CloudFront approach?

• A) Create separate distributions for each content type
  

• B) Use a single distribution with multiple cache behaviors
  

• C) Use only one origin for all content
  

• D) Disable caching for all paths

By default, how does CloudFront handle query strings like "/users?page=2&size=10"?

• A) Each query variation is cached separately
  

• B) Query strings are forwarded to origin
  

• C) CloudFront ignores query strings and returns same cached content
  

• D) Query strings cause cache invalidation

What does the "Age: 2621" header indicate?

• A) Time until cache expires
  

• B) Number of requests served
  

• C) CloudFront distribution age

  
  

• D) Time in seconds the object has been in cache.