Amazon Route 53

Highly available and scalable cloud Domain Name System (DNS) web service

Amazon Route 53 is a highly available and scalable cloud Domain Name System (DNS) web service that translates domain names to IP addresses. It can also route requests to AWS resources or to infrastructure outside of AWS.

5 minutes 5 Questions

Concepts covered: Domain Name System (DNS), Domain Registration, Health Checks, Amazon Route 53 Traffic Flow, Resolver Rules, Routing Policies, Private DNS, Hosted Zones, Record Sets, Alias Records

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AWS Certified Solutions Architect - Amazon Route 53 Example Questions

Test your knowledge of Amazon Simple Storage Service (S3)

Question 1

What is a weighted routing policy in Amazon Route 53?

A policy that chooses the endpoint with the highest availability A policy that allows traffic to be routed to different endpoints based on different weights A policy that selects an endpoint based on the location of the user A policy that chooses the endpoint with the lowest latency

Correct Answer: A policy that allows traffic to be routed to different endpoints based on different weights

A weighted routing policy in Amazon Route 53 allows traffic to be routed to different endpoints based on different weights. This is useful for load balancing or for routing traffic to different endpoints for A/B testing.

Question 2

What is DNSSEC in Amazon Route 53?

A routing policy for connecting to Amazon S3 A security protocol for adding digital signatures to DNS records A tool for monitoring the health of EC2 instances An encryption protocol for outgoing traffic

Correct Answer: A security protocol for adding digital signatures to DNS records

DNSSEC is a security protocol for adding digital signatures to DNS records, ensuring the authenticity and integrity of DNS data. It helps protect against forgery or tampering of DNS data, reducing the risk of DNS-related attacks, such as cache poisoning or man-in-the-middle attacks.

Question 3

What is the purpose of a health check in Amazon Route 53?

To monitor the health of resources such as web servers or mail servers and avoid directing traffic to them if they are unhealthy. To distribute traffic to multiple resources in a weighted or failover manner. To prevent unauthorized access to the hosted zone by checking the authentication of requests. To optimize the latency of the website by measuring the time it takes to respond to each request.

Correct Answer: To monitor the health of resources such as web servers or mail servers and avoid directing traffic to them if they are unhealthy.

Health checks are used to monitor the health of resources such as web servers or mail servers and avoid directing traffic to them if they are unhealthy. In addition, health checks can be used to enforce the performance of an SLA. DNS traffic management policies like failover and geolocation routing can use health checks to manage traffic according to the state of the target servers. The health check verifies whether the endpoints of a DNS name such as URLs and IP addresses are reachable and available to handle requests.

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