Distribution

5 minutes 5 Questions

A CloudFront distribution is a globally distributed network of caching servers. These servers are used to serve content to end-users with low latency and high data transfer speeds. Distributions have unique domain names or alternate domain names that identify them. AWS customers can create multiple…

Guide to AWS CloudFront Distribution

AWS CloudFront is a content delivery network offered by Amazon Web Services, and the 'Distribution' is a crucial component of it.

Why it is important:
Distributions in CloudFront are important because they speed up distribution of your static and dynamic web content to your end users. Consequently, the end users experience faster page load times to view the contents.

What it is:
A distribution is a globally distributed network of proxy servers deployed in multiple data centers. When you create a new distribution, you are essentially providing the configurations for CloudFront on how to deliver your content. The distribution has unique CloudFront.net domain name that you can use to distribute your files.

How it works:
When a viewer sends a request for your content, the CloudFront utilizes the distribution settings you have defined and routes the request to the nearest edge location with the least latency. Thus, ensuring efficient delivery of your content. There are two types of distribution: Web distribution for web distributions and RTMP for media streaming.

Answering questions on Distribution in an exam:
With the knowledge of the importance, meaning, and the function of AWS CloudFront Distribution, you will be better prepared for questions regarding this topic in an exam. One popular type of question could be to understand the difference between the two types of distribution. Also, expect scenario-based questions where you may need to decide the efficient distribution settings based on given requirements.

Exam Tips: Answering Questions on Distribution
1. Understand well the distribution concept and its types.
2. Focus on scenario-based questions and best practices for setting up efficient distribution.
3. Get clear with security and access control aspects related to distribution.
4. Make sure you are aware of the operation cost and optimization techniques.

Test mode:

Exam (Timed)

Practice (With explanations)

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Question 1

A company has an application needing regular access to an S3 bucket. They want to use CloudFront to cache and deliver the content minimizing latency. Which best configuration ensures this?

Create an S3 origin for the CloudFront distribution In the S3 bucket, enable Cross-Origin Resource Sharing (CORS) Configure an S3 Endpoint within a VPC Create an EC2 instance as the origin for the CloudFront distribution

Correct Answer: Create an S3 origin for the CloudFront distribution

To cache and deliver content stored in an S3 bucket, you should create a CloudFront distribution and use the S3 bucket as the origin. This ensures lower latency, as CloudFront caches content and delivers it through edge locations.

Question 2

A user has deployed an e-commerce website with multiple EC2 instances. The user wants to use CloudFront to optimize their site's page load times. What origin should they use for this use-case?

Create an S3 origin for the CloudFront distribution Create a custom origin with the application load balancer Bypass CloudFront and connect directly to the EC2 instance Use Amazon Route 53 with latency-based routing

Correct Answer: Create a custom origin with the application load balancer

For a dynamic website running on multiple EC2 instances, the best practice is to create a custom origin with an Application Load Balancer. This ensures the dynamic content is served from the EC2 instances, and optimizes page load times.

Question 3

You have a static website hosted on an S3 bucket. Due to GDPR requirements, your company needs to block access to the website from specific countries. What would be the most cost-efficient way to achieve this?

Configure Amazon Route 53 geolocation routing policy Host the website in multiple AWS Regions Use na Amazon WAF to block IP addresses Use CloudFront with Lambda@Edge

Correct Answer: Use CloudFront with Lambda@Edge

Using CloudFront with Lambda@Edge allows you to efficiently block access to your static website in specific countries by processing the viewer's request to determine the country and allow or block access accordingly.

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