Free DevOps Engineering on AWS Certification MCQ Questions and Answers

Question 1

When considering AWS Elastic Beanstalk, the \'Swap Environment URLs\' option most directly assists in what?

Accepted Answer

Blue-Green Deployments

Answer

Immutable Rolling Deployments

Answer

Mutable Rolling Deployments

Answer

Canary Deployments

Question 2

Amazon CloudTrail logs ____ activities described by the CloudTrail _____ APIs by default.

Accepted Answer

bucket-level; RESTful

Answer

object-level; RESTful

Answer

bucket-level; SDK

Answer

object-level; SDK

Question 3

You need your DynamoDB-backed API to remain operational amid a catastrophic regional AWS failure. During a significant failure event, you can accept a few minutes of lag or slowness, but the system should resume regular functioning after those few minutes.
What is an effective strategy?

Accepted Answer

Set up DynamoDB cross-region replication in a master-standby configuration, with a single standby in another region. Create an Auto Scaling Group behind an ELB in each of the two regions DynamoDB is running in. Add a Route53 Latency DNS Record with DNS Failover, using the ELBs in the two regions as the resource records.

Answer

Set up a DynamoDB Multi-Region table. Create a cross-region ELB pointing to a cross-region Auto Scaling Group, and direct a Route53 Latency DNS Record with DNS Failover to the cross-region ELB.

Answer

Set up DynamoDB cross-region replication in a master-standby configuration, with a single standby in another region. Create a cross-region ELB pointing to a cross-region Auto Scaling Group, and direct a Route53 Latency DNS Record with DNS Failover to the cross-region ELB.

Answer

Set up a DynamoDB Multi-Region table. Create an Auto Scaling Group behind an ELB in each of the two regions DynamoDB is running in. Add a Route53 Latency DNS Record with DNS Failover, using the ELBs in the two regions as the resource records.

Question 4

What is the anticipated behavior when Ansible is called with 'ansible-playbook -i localhost playbook.yml'?

Accepted Answer

Ansible won\'t run, this is invalid command line syntax

Answer

Ansible will run the playbook on the host named 'localhost\'

Question 5

Which language is not supported while creating custom Ansible modules?

Accepted Answer

All of the languages listed are supported

Answer

Bash

Answer

C++

Answer

Python

Question 6

Which of the following statements concerning establishing proxy support for Amazon Inspector agent on a Windows-based system is correct?

Accepted Answer

Amazon Inspector agent supports proxy usage on Windows-based systems through the use of the  WinHTTP proxy.

Answer

Amazon inspector agent supports proxy usage on Windows-based systems through awsagent.env configuration file.

Answer

Amazon Inspector proxy support on Windows-based systems is achieved throgh installing proxy-enabled version of the agent which comes with preconfigured files that you need to edit to match your environment.

Answer

Amazon Inspector agent supports proxy usage on Linux-based systems but not on Windows.

Question 7

A table in an Amazon RDS MySQL DB instance must be dropped and repopulated at each deployment for an n-tier application. This procedure can take several minutes, and the web tier cannot be accessed until it is completed. The web layer is currently set up as an Amazon EC2 Auto Scaling group, with instances terminated and replaced at each deployment. An AWS CodeBuild task does a SQL query to populate the MySQL table.
What steps should be taken to make sure that the web tier does not go online before the database is fully configured?

Accepted Answer

Use an EC2 Auto Scaling lifecycle hook to pause the configuration of the web tier until the table is populated.

Answer

Use AWS Step Functions to monitor and maintain the state of data population. Mark the database in service before continuing with the deployment.

Answer

Modify the launch configuration of the Auto Scaling group to pause user data execution for 600 seconds, allowing the table to be populated.

Answer

Use Amazon Aurora as a drop-in replacement for RDS MySQL. Use snapshots to populate the table with the correct data.