Flashcards

Amazon Route 53

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

5 minutes 5 Questions

Amazon Route 53 is AWS's highly available and scalable Domain Name System (DNS) web service. It provides several key functions: 1. Domain Registration: Allows you to register domain names for your applications. 2. DNS Routing: Translates user-friendly domain names like www.example.com into IP add…

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 Route 53

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 chooses the endpoint with the lowest latency A policy that selects an endpoint based on the location of the user

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

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 optimize the latency of the website by measuring the time it takes to respond to each request. To prevent unauthorized access to the hosted zone by checking the authentication of requests. To distribute traffic to multiple resources in a weighted or failover manner.

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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