CLF-C02: AWS Certified Cloud Practitioner

53%

Question 161

What are AMIs NOT used for?
Add your own software license
Add your own configuration
Add your own operating-system
Add your own IP addresses




Answer is Add your own IP addresses

You cannot use AMIs to add your IP addresses. IP addresses are added to an instance as you create it.

Question 162

EBS Volumes CANNOT be attached to multiple EC2 instances at a time.
True
False




Answer is True

EBS Volumes can be attached to only one EC2 Instance at a time, but EC2 Instances can have multiple EBS Volumes attached to them.

Question 163

Which AWS service can identify the person who made the API request when an Amazon EC2 instance is terminated?
Amazon CloudWatch
AWS CloudTrail
AWS X-Ray
AWS Identity and Access Management (IAM)




Answer is AWS CloudTrail

Capture and consolidate user activity and API usage across AWS Regions and accounts on a single, centrally controlled platform.
CloudTrail tracks user mods and actions on resources and instances.
CloudWatch provides the data and actionable insights to monitor applications and resources.
X-Ray is a dev tool that analyzes an app to check for its dependencies and other links to other apps or resources.

Reference:
https://docs.aws.amazon.com/awscloudtrail/latest/userguide/cloudtrail-user-guide.html

Question 164

Which of the following AWS services should a client utilize to audit the change management of AWS resources?
AWS Config
AWS Trusted Advisor
Amazon CloudWatch
Amazon Inspector




Answer is AWS Config

AWS Config : auditing of changes to configurations, correct.
AWS Trusted Advisor : best practice assessments, wrong.
Amazon CloudWatch : performance monitoring, wrong.
Amazon Inspector : automated security assessments, wrong.

AWS Config is a service that enables you to assess, audit, and evaluate the configurations of your AWS resources. Config continuously monitors and records your AWS resource configurations and allows you to automate the evaluation of recorded configurations against desired configurations. With Config, you can review changes in configurations and relationships between AWS resources, dive into detailed resource configuration histories, and determine your overall compliance against the configurations specified in your internal guidelines. This enables you to simplify compliance auditing, security analysis, change management, and operational troubleshooting.

Reference:
https://aws.amazon.com/config/

Question 165

Which feature enables Amazon EC2 instances to be more elastic in response to changing workload demand?
Virtualization Management
Hardware management
Encryption management
Facilities management
Firewall management




Answer is Virtualization Management

Question 166

What is the unique advantage that Enterprise Support customers receive?
Access to a Technical Project Manager
Access to a Technical Account Manager
Access to a Cloud Support Engineer
Access to a Solutions Architect




Answer is Access to a Technical Account Manager

TAM is enterprise support plan.

Reference:
https://aws.amazon.com/premiumsupport/plans/enterprise/

Question 167

Which AWS services and/or features increase availability and mitigate the effect of failures while constructing a typical three-tier web application? (Select two.)
AWS Auto Scaling for Amazon EC2 instances
Amazon VPC subnet ACLs to check the health of a service
Distributed resources across multiple Availability Zones
AWS Server Migration Service (AWS SMS) to move Amazon EC2 instances into a different Region
Distributed resources across multiple AWS points of presence




Answers are;
A. AWS Auto Scaling for Amazon EC2 instances
C. Distributed resources across multiple Availability Zones


You can use Auto Scaling to help make sure that you are running the desired number of healthy EC2 instances across multiple Availability Zones. Auto Scaling can also automatically increase the number of EC2 instances during demand spikes to maintain performance and decrease capacity during less busy periods to optimize costs
https://d1.awsstatic.com/whitepapers/AWS_Cloud_Best_Practices.pdf
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Pay attention to 3 tier application, it includes & requires mostly multiple server to perform well

ACL are for security mainly. A network access control list (ACL) is an optional layer of security for your VPC that acts as a firewall for controlling traffic in and out of one or more subnets. You might set up network ACLs with rules similar to your security groups in order to add an additional layer of security to your VPC
https://docs.aws.amazon.com/vpc/latest/userguide/vpc-network-acls.html
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Point of Presence consists of Edge Locations and Regional Edge Cache and are used by CloudFront for CDN purpose

Question 168

Which AWS serverless platform services are included?
Amazon EC2, Amazon S3, Amazon Athena
Amazon Kinesis, Amazon SQS, Amazon EMR
AWS Step Functions, Amazon DynamoDB, Amazon SNS
Amazon Athena, Amazon Cognito, Amazon EC2




Answer is AWS Step Functions, Amazon DynamoDB, Amazon SNS

AWS provides a set of fully managed services that you can use to build and run serverless applications. Serverless applications don't require provisioning, maintaining, and administering servers for backend components such as compute, databases, storage, stream processing, message queueing, and more. You also no longer need to worry about ensuring application fault tolerance and availability. Instead, AWS handles all of these capabilities for you.

Serverless platform includes: AWS lambda, Amazon S3, DynamoDB, API gateway, Amazon SNS, AWS step functions, Amazon kinesis and developing tools and services.

Reference:
https://aws.amazon.com/serverless/

Question 169

Which change management actions, according to the AWS Well-Architected Framework, should be followed to ensure AWS Cloud reliability? (Select two.)
Use AWS Config to generate an inventory of AWS resources
Use service limits to prevent users from creating or making changes to AWS resources
Use AWS CloudTrail to record AWS API calls into an auditable log file
Use AWS Certificate Manager to whitelist approved AWS resources and services
Use Amazon GuardDuty to validate configuration changes made to AWS resources




Answers are;
A. Use AWS Config to generate an inventory of AWS resources
C. Use AWS CloudTrail to record AWS API calls into an auditable log file


AWS Certificate Manager is a service that lets you easily provision, manage, and deploy public and private Secure Sockets Layer/Transport Layer Security (SSL/TLS) certificates for use with AWS services and your internal connected resources. SSL/TLS certificates are used to secure network communications and establish the identity of websites over the Internet as well as resources on private networks. AWS Certificate Manager removes the time-consuming manual process of purchasing, uploading, and renewing SSL/TLS certificates. So cannot be D
service limits is about resource quantity so B is wrong
GuardDuty is about threat protection so E is wrong
Can only be and A and C

Reference:
https://d1.awsstatic.com/whitepapers/architecture/AWS-Reliability-Pillar.pdf
(Page 35)

Question 170

Which AWS services or functionalities enable failover across several AWS Regions to ensure high availability and low latency? (Select two.)
Amazon Route 53
Network Load Balancer
Amazon S3 Transfer Acceleration
AWS Global Accelerator
Application Load Balancer




Answers are;
A. Amazon Route 53
D. AWS Global Accelerator


A and D are Regional, B and E are zonal.

Reference:
https://docs.aws.amazon.com/whitepapers/latest/real-time-communication-on-aws/cross-region-dns-based-load-balancing-and-failover.html

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