Monthly Archives: June 2023

10. [SAA/DVA] Routing Policy – Latency So let’s talk about a routing policy that’s super easy to understand, which is the latency based routing policy. Okay, so now let’s talk about latencybased routing policies. And the idea is that you want to redirect to the resource that is going to have the lowest latency. So […]

8. [SAA/DVA] Routing Policy – Simple Now let’s talk about routing policies for Route 53. So a routing policy is helping Route 52 respond to DNS queries and we shouldn’t be confused about the word routing, okay? This is not like when you have a load balancer and the actual lounger will route traffic to […]

6. [SAA/DVA] Route 53 – TTL Okay, so let’s have a look at TTLs. So a record TTL is a Time to live. And let’s take this example where a client is accessing our DNS, Route 53 and a web server. So we do a DNS request for My Apps example and we get an […]

3. [SAA/DVA] Route 53 – Registering a Domain Okay, so let’s open the Route 53 service, which is a scalable DNS management system. Okay, so as we can see, there’s only one hosted zone for me and one domain for me. That’s because I’ve already registered domain, but for you it should say zero hosted […]

17. [SAA] Direct Connect & Direct Connect Gateway Now let’s talk about Direct Connect, and you may also see it as DX in the exam. So it provides a dedicated private connection from a remote network into your VPC. So you need to set up that dedicated connection and it is using an AWS Direct […]

1. [SAA/DVA] What is a DNS? Okay, so before we talk about route 53, we have to talk about what is a DNS. So this is a basic level lecture, but at least it will help you understand how DNS works. And this is something you’ve been using behind the scenes every day, but you […]

14. VPC Flow Logs Troubleshooting for NACL and SG Just a quick lecture on how you could troubleshoot security group and knackle issues using flow logs. So let’s look at an incoming request. So this is remember the flow of an incoming request. And so it turns out that if you get right away an […]

12. [SAA] VPC Endpoints Our diagram is getting fuller and fuller by the day. So now let’s talk about how do we talk to AWS services. So, as we know, DynamoDB Cloud Watch S Three, these are all within the AWS cloud. Although if we want to access those right now from a private EC […]

10. [SAA] NACL & Security Groups Okay, in this lecture let’s talk about network sels and security group. So it is super important for you to understand the distinction because it can come up very often in the exam to understand what’s the difference between the network sels and security group. Now, for shortness purposes, […]

8. [SAA] NAT Gateways Talk about routing policies for Route 53. So a routing policy is helping Route 52 respond to DNS queries and we shouldn’t be confused about the word routing, okay? This is not like when you have a load balancer and the actual balancer will route traffic to the back end. Easy […]