Artificial Intelligence and Machine Learning Since CloudTrail and CloudWatch collect logging and metric data from Route 53 operations, this can be stored and analyzed with AI/ML tools offered by AWS and its business partners. Companies such as Splunk and others offer services in this space. Check the AWS Marketplace for the latest information. Redshift Redshift […]

DNS Logging and Monitoring Amazon Web Services has integrated Route 53 into its management applications for ease of use and insight into its operations. Since all interactions with Route 53 are an API call behind the scenes, these records can be natively sent to CloudTrail for a record of activities and analysis. The CloudWatch monitoring […]

Timers Since DNS is a distributed database, there must be a mechanism to ensure that the data remains fresh in the nonauthoritative servers. When a resolver requests a record, it will store that information locally in case it is needed again. However, if it remains in the local cache, the primary, or authoritative, server may […]

DNS Resolution Process Figure 2.3 illustrates the steps involved with a standard DNS query and the interactions from the different levels of the DNS hierarchy as the client types a URL into a browser window until the IP address is returned. The client types in the browser a web page to load such as www.tipofthehat.com. The […]

DNS Hierarchy DNS is a highly distributed database that contains a hierarchy that flows from very general information at the top of the stack to specific host information at the bottom, as shown in Figure 2.2. Distributed root servers are at the top of the DNS hierarchy and are used to direct queries to the top-level […]

DNS Overview DNS is a distributed service that operates globally in all IP-based networks. DNS clients run on networking devices such as smartphones, tablets, laptops, all the way to huge server clusters running in AWS. DNS services the client requests for information to connect to devices given a domain name and returning an IP address. […]

THE AWS CERTIFIED ADVANCED NETWORKING – SPECIALTY EXAM OBJECTIVES COVERED IN THIS CHAPTER MAY INCLUDE, BUT ARE NOT LIMITED TO, THE FOLLOWING: Objective 1.2: Design DNS solutions that meet public, private, and hybrid requirements. DNS and Route 53 Before we go into all of the details of DNS and Route 53 needed to ace the […]

Review Questions

Written Lab Written Lab 1.1: Create an HTTP API by Using the AWS Management Console https://l030ogly41.execute-api.us-west-2.amazonaws.com (for example) curlhttps://l030ogly41.execute-api.us-west-2.amazonaws.com (for example) Note: Since there is not a live web server, you will not see any data. Review Questions The following questions are designed to test your understanding of this chapter’s material. For more information on how to […]

Exam Essentials Understand the architecture of AWS CloudFront. Know that cached data is stored at edge locations based on demand. Regional edge caches are intermediate data stores for the local edge location to refresh content without having to go back to the originating source. Know the details of CloudFront invalidations and the protocols supported. Know […]