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Amazon DOP-C01 (AWS Certified DevOps Engineer - Professional) Exam is a professional-level certification that validates the candidate's expertise in DevOps practices and principles on the AWS platform. AWS Certified DevOps Engineer - Professional certification exam is designed for experienced DevOps engineers who have a deep understanding of the AWS services and can design, deploy, and manage highly scalable and fault-tolerant systems on the cloud. DOP-C01 Exam covers a range of topics, including continuous integration and delivery, infrastructure as code, monitoring and logging, security and compliance, and automation.

Amazon AWS Certified DevOps Engineer - Professional Sample Questions (Q99-Q104):

NEW QUESTION # 99
Which of the following will you need to consider so you can set up a solution that incorporates single sign-on
from your corporate AD or LDAP directory and restricts access for each user to a designated user folder in a
bucket? Choose 3 Answers from the options below

A. Using AWS Security Token Service to generate temporary tokens
B. Setting up a matching 1AM user for every user in your corporate directory that needs access to a folder
in the bucket
C. Tagging each folder in the bucket
D. Setting up a federation proxy or identity provider
E. Configuring 1AM role

Answer: A,D,E

Explanation:
Explanation
The below diagram showcases how authentication is carried out when having an identity broker. This is an
example of a SAML connection, but the same concept
holds true for getting access to an AWS resource.

For more information on federated access, please visit the below link:
* http://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_com
mon-scenarios_federated-users.htm I
* https://docs.aws.a mazon.com/IAM/latest/UserGuide/id_roles_create_for-idp_sam I.
html?icmpid=docs_iam_console
* https://aws.ama zon.com/blogs/secu
rity/writing-iam-policies-grant-access-to-user-specific-folders-in-an-amazon-s3-bucket/

NEW QUESTION # 100
What is the default maximum number of Roles per AWS account?

A. 0
B. 1
C. There is no limit.
D. 2

Answer: A

Explanation:
The default maximum number of Roles per AWS account is 250.
Reference: http://docs.aws.amazon.com/IAM/latest/UserGuide/LimitationsOnEntities.htm

NEW QUESTION # 101
A DevOps engineer notices that all Amazon EC2 instances running behind an Application Load Balancer in an Auto Scaling group are failing to respond to user requests. The EC2 instances are also failing target group HTTP health checks.
Upon inspection, the engineer notices the application process was not running in any EC2 instances. There are a significant number of out of memory messages in the system logs. The engineer needs to improve the resilience of the application to cope with a potential application memory leak. Monitoring and notifications should be enabled to alert when there is an issue.
Which combination of actions will meet these requirements? (Choose two.)

A. Enable the available memory consumption metric within the Amazon CloudWatch dashboard for the entire Auto Scaling group.
Create an alarm when the memory utilization is high. Associate an Amazon SNS topic to the alarm to receive notifications when the alarm goes off.
B. Change the Auto Scaling configuration to replace the instances when they fail the load balancer's health checks.
C. Change the target group health checks from HTTP to TCP to check if the port where the application is listening is reachable.
D. Use the Amazon CloudWatch agent to collect the memory utilization of the EC2 instances in the Auto Scaling group.
Create an alarm when the memory utilization is high and associate an Amazon SNS topic to receive a notification.
E. Change the target group health check HealthCheckIntervalSeconds parameter to reduce the interval between health checks.

Answer: B,D

NEW QUESTION # 102
You have an application consisting of a stateless web server tier running on Amazon EC2 instances behind load balancer, and are using Amazon RDS with read replicas. Which of the following methods should you use to implement a self-healing and cost-effective architecture?
Choose 2 answers from the optionsgiven below

A. Set up an Auto Scalinggroup for the database tier along with an Auto Scaling policy that uses the Amazon RDS read replica lag CloudWatch metric to scale out the Amazon RDS read replicas.
B. Set up an Auto Scalinggroup for the web server tier along with an Auto Scaling policy that uses the Amazon EC2 CPU utilization CloudWatch metric to scale the instances.
C. Use an Amazon RDS Multi-AZ deployment.
D. Use a larger Amazon EC2 instance type for the web server tier and a larger DB instance type for the data storage layer to ensure that they don't become unhealthy.
E. Set up scripts on each Amazon EC2 instance to frequently send ICMP pings to the load balancer in order to determine which instance is unhealthy and replace it.
F. Set up an Auto Scalinggroup for the web server tier along with an Auto Scaling policy that uses the Amazon RDS DB CPU utilization Cloud Watch metric to scale the instances.
G. Set up a third-party monitoring solution on a cluster of Amazon EC2 instances in order to emit custom Cloud Watch metrics to trigger the termination of unhealthy Amazon EC2 instances.

Answer: B,C

Explanation:
The scaling of CC2 Instances in the Autoscaling group is normally done with the metric of the CPU utilization of the current instances in the Autoscaling group For more information on scaling in your Autoscaling Group, please refer to the below link:
http://docs.aws.a mazon.com/autoscaling/latest/userguide/as-scaling-si mple-step.html Amazon RDS Multi-AZ deployments provide enhanced availability and durability for Database (DB) Instances, making them a natural fit for production database workloads. When you provision a Multi- AZ DB Instance, Amazon RDS automatically creates a primary DB Instance and synchronously replicates the data to a standby instance in a different Availability Zone (AZ). Cach AZ runs on its own physically distinct, independent infrastructure, and is engineered to be highly reliable. In case of an infrastructure failure, Amazon RDS performs an automatic failover to the standby for to a read replica in the case of Amazon Aurora), so that you can resume database operations as soon as the failover is complete. For more information on RDS Multi-AZ please refer to the below link:
https://aws.amazon.com/rds/details/multi-az/
Option A is invalid because if you already have in-built metrics from Cloudwatch, why would you want to spend more in using a a third-party monitoring solution.
Option B is invalid because health checks are already a feature of AWS CLB Option C is invalid because the database CPU usage should not be used to scale the web tier.
Option C is invalid because increasing the instance size does not always guarantee that the solution will not become unhealthy.
Option F is invalid because increasing Read-Replica's will not suffice for write operations if the primary DB fails.

NEW QUESTION # 103
After reviewing the last quarter's monthly bills, management has noticed an increase in the overall bill from
Amazon. After researching this increase in cost, you discovered that one of your new services is doing a lot of
GET Bucket API calls to Amazon S3 to build a metadata cache of all objects in the applications bucket. Your
boss has asked you to come up with a new cost-effective way to help reduce the amount of these new GET
Bucket API calls. What process should you use to help mitigate the cost?

A. Upload all files to an ElastiCache file cache server. Update your application to now read all file
metadata from the ElastiCache file cache server, and configure the ElastiCache policies to push all files
to Amazon S3 for long-term storage.
B. Create a new DynamoDB table. Use the new DynamoDB table to store all metadata about all objects
uploaded to Amazon S3. Any time a new object is uploaded, update the application's internal Amazon
S3 object metadata cache from DynamoDB.
C Using Amazon SNS, create a notification on any new Amazon S3 objects that automatical ly updates
a new DynamoDB table to store all
metadata about the new object. Subscribe the application to the Amazon SNS topic to update its internal
Amazon S3 object metadata cache from the DynamoDB table.