Hosted zones concept in AWS - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

Understanding the purpose of a hosted zone

What is the main purpose of a hosted zone in AWS Route 53?

A It stores DNS records for a specific domain to route internet traffic.

B It hosts the website files and content for a domain.

C It manages user permissions for AWS services.

D It monitors network traffic for security threats.

💡 Hint

Think about what DNS does for a domain name.

A hosted zone in AWS Route 53 is a container that holds DNS records for a domain. These records tell the internet where to send traffic for that domain.

❓ Architecture

intermediate

Choosing the correct hosted zone type

You want to create DNS records that are only accessible within your private AWS network (VPC). Which type of hosted zone should you create?

A Private hosted zone

B Public hosted zone

C Hybrid hosted zone

D Global hosted zone

💡 Hint

Consider where the DNS records should be visible.

A private hosted zone is used to create DNS records that are only visible inside one or more specified VPCs, keeping them private within your AWS network.

❓ Configuration

advanced

Effect of deleting a hosted zone

What happens to the DNS resolution of a domain if you delete its hosted zone in AWS Route 53?

A AWS automatically creates a new hosted zone with default records.

B DNS resolution continues normally without interruption.

C DNS resolution stops because the DNS records are removed.

D The domain is automatically transferred to another AWS account.

💡 Hint

Think about what DNS needs to resolve a domain.

Deleting a hosted zone removes all DNS records for that domain, so DNS resolution fails because there is no information to direct traffic.

❓ security

advanced

Securing access to private hosted zones

Which AWS feature should you use to restrict which users can create or modify records in a private hosted zone?

A AWS Shield

B AWS Config

C AWS CloudTrail

D AWS Identity and Access Management (IAM) policies

💡 Hint

Think about controlling user permissions.

IAM policies allow you to control which users or roles can create, update, or delete DNS records in hosted zones, including private ones.

❓ service_behavior

expert

Behavior of alias records in hosted zones

In AWS Route 53, what is a key difference between alias records and standard CNAME records within a hosted zone?

A Alias records are deprecated and replaced by CNAME records.

B Alias records can point directly to AWS resources and do not incur DNS query charges, while CNAME records point to domain names and incur charges.

C Alias records only work for private hosted zones, while CNAME records only work for public hosted zones.

D Alias records require manual IP updates, while CNAME records automatically update IP addresses.

💡 Hint

Consider cost and integration with AWS services.

Alias records can point directly to AWS resources like load balancers or S3 buckets and do not incur additional DNS query charges. CNAME records point to domain names and may incur charges.