CLF-C02: AWS Certified Cloud Practitioner

72%

Question 221

What type of database is Amazon DynamoDB?
In-memory
Relational
Key-value
Graph




Answer is Key-value

Amazon DynamoDB is a fully managed, serverless, *key-value* NoSQL database designed to run high-performance applications at any scale

Question 222

Which AWS services offer gateway VPC endpoints that can be used to avoid sending traffic over the internet? (Choose two.)
Amazon Simple Notification Service (Amazon SNS)
Amazon Simple Queue Service (Amazon SQS)
AWS CodeBuild
Amazon S3
Amazon DynamoDB




Answers are;
D. Amazon S3
E. Amazon DynamoDB

Gateway type endpoints are available only for AWS services including S3 and DynamoDB. These endpoints will add an entry to your route table you selected and route the traffic to the supported services through Amazon’s private network.

Interface type endpoints provide private connectivity to services powered by PrivateLink, being AWS services, your own services or SaaS solutions, and supports connectivity over Direct Connect. More AWS and SaaS solutions will be supported by these endpoints in the future. Please refer to VPC Pricing for the price of interface type endpoints.

Reference:
https://aws.amazon.com/vpc/faqs/#:~:text=Gateway%20type%20endpoints%20are%20available
,services%20through%20Amazon's%20private%20network.

Question 223

A company has a serverless application that includes an Amazon API Gateway API, an AWS Lambda function, and an Amazon DynamoDB database.

Which AWS service can the company use to trace user requests as they move through the application's components?
AWS CloudTrail
Amazon CloudWatch
Amazon Inspector
AWS X-Ray




Answer is AWS X-Ray

CloudTrail - audit
Cloudwatch - monitor
Inspector - vulnerability management
X-Ray - tracing

AWS X-Ray provides a complete view of requests as they travel through your application and filters visual data across payloads, functions, traces, services, APIs, and more with no-code and low-code motions.

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

Question 224

A company needs to set up a petabyte-scale data warehouse in the AWS Cloud.

Which AWS service will meet this requirement?
Amazon DynamoDB
Amazon RDS
Amazon Redshift
Amazon ElastiCache




Answer is Amazon Redshift

Amazon Redshift is a fast, fully managed, petabyte-scale data warehouse service that makes it simple and cost-effective to efficiently analyze all your data using your existing business intelligence tools.

Question 225

Which benefit is included with an AWS Enterprise Support plan?
AWS Partner Network (APN) support at no cost.
Designated support from an AWS technical account manager (TAM)
On-site support from AWS engineers
AWS managed compliance as code with AWS Config




Answer is Designated support from an AWS technical account manager (TAM)

With an AWS Enterprise Support plan, one of the benefits is the availability of a designated AWS technical account manager (TAM). The TAM acts as a single point of contact and provides personalized guidance and assistance to help the customer optimize their AWS environment, resolve technical issues, and achieve their business goals. The TAM works closely with the customer to understand their specific needs and provides proactive support, architectural guidance, and best practices recommendations.

AWS performs automatic patching of Amazon EC2 instances as part of its shared responsibility model for managing security in the cloud. AWS manages the underlying infrastructure and provides patches and updates for the infrastructure components, including the hypervisor, network, and storage layers. However, customers are responsible for patching the operating system, applications, and software that they install on their EC2 instances.

Question 226

Which task does AWS perform automatically?
Encrypt data that is stored in Amazon DynamoDB.
Patch Amazon EC2 instances.
Encrypt user network traffic.
Create TLS certificates for users' websites.




Answer is Encrypt data that is stored in Amazon DynamoDB.

All user data stored in Amazon DynamoDB is fully encrypted at rest. DynamoDB encryption at rest provides enhanced security by encrypting all your data at rest using encryption keys stored in AWS Key Management Service (AWS KMS). This functionality helps reduce the operational burden and complexity involved in protecting sensitive data. With encryption at rest, you can build security-sensitive applications that meet strict encryption compliance and regulatory requirements.

Reference:
https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/EncryptionAtRest.html

Question 227

A company wants to deploy some of its resources in the AWS Cloud. To meet regulatory requirements, the data must remain local and on premises. There must be low latency between AWS and the company resources.

Which AWS service or feature can be used to meet these requirements?
AWS Local Zones
Availability Zones
AWS Outposts
AWS Wavelength Zones




Answer is AWS Outposts

AWS Outposts allows customers to run AWS infrastructure and services on-premises for a consistent hybrid experience. With AWS Outposts, customers can have low-latency access to the same AWS services, APIs, and tools that they use in AWS Regions, while maintaining data residency and meeting regulatory requirements. This service enables customers to run compute, storage, and database services locally, and seamlessly connect to AWS services in the cloud.

AWS Local Zones and Availability Zones are both cloud data centers that provide high availability and fault tolerance for AWS resources. They do not provide the capability to run AWS services locally.

AWS Wavelength Zones provide ultra-low latency connectivity between 5G devices and AWS services, but they are not designed to run AWS services on customer premises.

Reference:
https://aws.amazon.com/blogs/compute/aws-local-zones-and-aws-outposts-choosing-the-right-technology-for-your-edge-workload/#:~:text=Unlike%20Outposts%2C%20which%20you%20deploy
,using%20for%20an%20AWS%20Region.

Question 228

Which AWS service is a highly available and scalable DNS web service?
Amazon VPC
Amazon CloudFront
Amazon Route 53
Amazon Connect




Answer is Amazon Route 53

Amazon Route 53 is a highly available and scalable Domain Name System (DNS) web service provided by AWS. It is designed to route end users to internet applications by translating domain names into IP addresses. Route 53 provides reliable and cost-effective domain registration, DNS routing, and health checking of resources within AWS or outside of it.

Reference:
https://aws.amazon.com/route53/

Question 229

A company would like to host its MySQL databases on AWS and maintain full control over the operating system, database installation, and configuration.

Which AWS service should the company use to host the databases?
Amazon RDS
Amazon EC2
Amazon DynamoDB
Amazon Aurora




Answer is Amazon EC2

To maintain full control over the operating system, database installation, and configuration, the company should use Amazon EC2 to host their MySQL databases on AWS.

Amazon EC2 provides full administrative access to the underlying operating system and hardware, giving users complete control over the configuration and management of their environment. This allows users to install and configure the specific software versions and components required for their database environment, including MySQL.

Amazon RDS, on the other hand, is a managed database service that provides automated database administration, backup and recovery, and scaling capabilities. While Amazon RDS supports MySQL databases, users do not have access to the underlying operating system and hardware, and therefore cannot have full control over the installation and configuration of their databases.

Here are some of the benefits of using Amazon EC2 to host MySQL databases:
Full control: You have full control over the operating system, database installation, and configuration.
Flexibility: You can choose the type of VM that you need, the amount of storage that you need, and the region that you want to host your databases in.
Cost-effectiveness: You can only pay for the resources that you use.

Reference:
https://www.youtube.com/watch?v=hUT1cyfPAts

Question 230

Which AWS service or feature is used to send both text and email messages from distributed applications?
Amazon Simple Notification Service (Amazon SNS)
Amazon Simple Email Service (Amazon SES)
Amazon CloudWatch alerts
Amazon Simple Queue Service (Amazon SQS)




Answer is Amazon Simple Notification Service (Amazon SNS)

Amazon Simple Notification Service (Amazon SNS) is a fully managed messaging service that enables the sending of both text messages (SMS) and email messages from distributed applications. It provides a publish-subscribe model, allowing messages to be sent to multiple subscribers or endpoints simultaneously.

With Amazon SNS, applications can send messages to a variety of endpoints, including email addresses, mobile devices (via SMS), AWS Lambda functions, HTTP endpoints, and more. It supports both text-based messages and email messages, making it a versatile solution for sending notifications, alerts, and other types of messages to users or systems.

Amazon SQS is a message queue service that allows you to decouple microservices and distributed systems. SQS is a good option for storing messages that need to be processed later. However, it is not a good option for sending text or email messages.

Reference:
https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-difference-from-amazon-mq-sns.html

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