DevOps Engineering on AWS Certification High Availability, Fault Tolerance, and Auto Scaling

Question 1

Which AWS Auto Scaling policy adjusts capacity based on a target value for a specific metric, such as 70% CPU utilization?

Accepted Answer

Target Tracking Scaling

Answer

Step Scaling

Answer

Simple Scaling

Answer

Scheduled Scaling

Question 2

What is the purpose of an EC2 Auto Scaling lifecycle hook?

Accepted Answer

To pause instance launch or termination so custom actions can be performed

Answer

To set the desired capacity of an Auto Scaling group

Answer

To trigger a CloudWatch alarm on scaling events

Answer

To define the scaling policies for the group

Question 3

Which AWS service provides managed service discovery for microservices running on ECS or EC2?

Accepted Answer

AWS Cloud Map

Answer

Amazon Route 53

Answer

AWS App Mesh

Answer

Elastic Load Balancing

Question 4

Which ELB type is optimized for handling millions of requests per second with ultra-low latency at the TCP layer?

Accepted Answer

Network Load Balancer

Answer

Application Load Balancer

Answer

Gateway Load Balancer

Answer

Classic Load Balancer

Question 5

What does an EC2 Auto Scaling warm pool enable?

Accepted Answer

Pre-initialized instances that can be quickly launched to handle demand spikes

Answer

A pool of reserved instances for cost savings

Answer

A staging environment for testing new AMIs

Answer

A secondary Auto Scaling group for blue/green deployments

Question 6

Which Route 53 routing policy distributes traffic based on the geographic location of DNS queries?

Accepted Answer

Geolocation routing

Answer

Latency-based routing

Answer

Weighted routing

Answer

Failover routing