Knowledge Check

AWS Module 10 Knowledge Check

Question 1

Which statement about Amazon EC2 Auto Scaling is accurate?

It can launch Amazon EC2 instances in multiple Availability Zones ✓
It can launch new Amazon EC2 instances based on a schedule
It can launch Amazon EC2 instances, but customers must terminate instances after they are no longer needed
It requires the customer to use Reserved Instances only

Question 2

A devops engineer detected that the demand on a fleet of Amazon EC2 instances in an Auto Scaling group increases by a set amount on weekend days. Which type of scaling is the MOST appropriate in this case?

Dynamic
Scheduled ✓
Predictive
Manual

Question 3

A devops engineer launches a fleet of Amazon EC2 instances in an Auto Scaling group behind an Application Load Balancer. The EC2 instances must maintain 50 percent average CPU utilization. Which type of scaling is appropriate to use based on CPU utilization usage?

Simple scaling
Manual scaling
Target tracking scaling ✓
Step scaling

Question 4

How can a user vertically scale an Amazon RDS database?

By sharding the database
By adding read replicas
By creating dedicated read and write nodes
By changing the instance class or size ✓

Question 5

How can an AWS customer horizontally scale an Amazon Aurora database?

By creating Amazon CloudWatch alarms
By adding Aurora Replica instances by using Aurora Auto Scaling ✓
By changing the instance type
By creating a scaling policy

Question 6

How does Amazon DynamoDB perform automatic scaling?

It changes the instance type in response to changes in processing load
It adds and removes database instances in response to changes in traffic
It adjusts the provisioned throughput capacity in response to traffic patterns ✓
It adds read replicas in response to increased read demand

Question 7

A fleet of Amazon EC2 instances is launched in an Amazon EC2 Auto Scaling group. The instances run an application that uses a custom protocol on TCP port 42000. Connections from client systems on the internet must balance across the instances. Which load balancing solution is the best solution?

Network Load Balancer ✓
Application Load Balancer
Classic Load Balancer
Gateway Load Balancer

Question 8

A company must build a highly available website that uses server-side scripts to serve dynamic HTML. Which solution provides the HIGHEST availability for the LEAST cost and complexity?

The customer deploys a second web server in another Region. Amazon Route 53 uses failover routing for disaster recovery (DR)
An Auto Scaling group launches Amazon EC2 instances, which are served by an Application Load Balancer. DNS name resolution points to the load balancer ✓
Amazon S3 hosts the website. DNS name resolution points to the S3 bucket
An Auto Scaling group launches Amazon EC2 instances, which are served by a Network Load Balancer. Amazon Route 53 uses latency-based routing

Question 9

Users in location A connect to an application in Region A. Users in location B connect to the same application in Region B. If the application in Region A becomes unhealthy, traffic for location A must be redirected to the application in Region B. Which solution meets this requirement?

Use an Application Load Balancer with Amazon CloudWatch alarms
Use latency-based routing in Amazon Route 53 with Amazon CloudWatch alarms
Use geoproximity routing and a Network Load Balancer that is attached to both Regions
Use geolocation routing with failover records in Amazon Route 53 ✓

Question 10

A software engineer has created an AWS account for their own personal development and testing. They want the account to stay within the AWS Free Tier and to not generate unexpected costs. Which approach will work and will require the LEAST effort?

Sign in to the AWS Management Console each month and check the billing dashboard
Create a service control policy (SCP) to restrict all services that are not included in the AWS Free Tier
Create an Amazon CloudWatch metric to monitor account billing and limit it to $0
Create an Amazon CloudWatch alarm to send an email message when the account billing exceeds $0 ✓