You received reports from clients in another time zone that they experienced an outage of your website several hours before you arrived at work. What two AWS services could prove crucial in figuring out what happened? (Choose two.)
BC
In real world, when outage happened, the first thing is to check logs to find out who made the change, and what changes made before the outage happened. Then find out change content, to see if there is any relationship between outage and change. Most of outages caused by scheduled / unscheduled changes.
A. AWS Support could depend on you to tell them what happened. From my experience of dealing with Cisco, they always suggest you to upgrade to up-to-date IOS. It's kind of slow...
D. Flow logs can provide you with network layer 4 details, but outage could include application, database, etc...
B. CloudTail could tell you who made the change, and what change is about, and also the time, etc...
C. CloudWatch could tell you if there is any resource exhaustion, violation, pre-defined alarm triggered, etc...
C & D are correct.
The question is meant to trick you. Firget about the scenario, just read the question, it says..."What two AWS services could prove crucial in figuring out what happened?..."
For this, you go to VPC Flow logs and zoom into your interesting device as well as Cloudwatch to support further.
Cloud Trail is a tempting solution but it is a tool fundamentally designed to tell you WHO did something....but you must already know that someone DID something. So you first investigate using the application counters and metrics, not straight off to CloudTrail...
Since it is already an outage, chances are logs coming into VPC Flow Logs is very rate. So, we can check CloudTrail and CloudWatch to see if any deployment or resources got stopped/deleted. Then we can still check VPC Flow logs as a 3rd component. Will go with B & C
I think Trail has greater view and also faster way.
With Flog you can only know accept/reject. But what if someone changed R53 record or something else?
yes it's BC. vpc flow is more for traffic going in and out of your network interface in your vpc.
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