Changing the Concept of CLF-C02 Exam Preparation 2024
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NEW QUESTION # 166
A company has a set of ecommerce applications. The applications need to be able to send messages to each other. Which AWS service meets this requirement?
- A. Amazon Kinesis Data Streams
- B. Elastic Load Balancing
- C. AWS Auto Scaling
- D. Amazon Simple Queue Service (Amazon SOS)
Answer: D
Explanation:
Amazon Simple Queue Service (Amazon SQS) is a fully managed message queuing service that lets you send, store, and receive messages between software components at any volume, without losing messages or requiring other services to be available1. Amazon SQS is designed to provide a simple and reliable way for customers to decouple and connect components (microservices) together using queues2. Queues are an important mechanism for providing fault tolerance and scalability in distributed systems, and help decouple different parts of your application3. The other options are not AWS services that are used specifically for sending messages between applications
NEW QUESTION # 167
Which best practice for cost governance does this example show?
- A. Tagging enforcement
- B. Architecture optimization
- C. Cost allocation
- D. Resource controls
Answer: B
Explanation:
Explanation
Architecture optimization is the best practice for cost governance that this example shows. Architecture optimization is the process of designing and implementing AWS solutions that are efficient, scalable, and cost-effective. By using specific AWS services to improve efficiency and reduce cost, the company is following the architecture optimization best practice. Some of the techniques for architecture optimization include using the right size and type of resources, leveraging elasticity and scalability, choosing the most suitable storage class, and using serverless and managed services2.
NEW QUESTION # 168
Which AWS services are connectivity services for a VPC? (Select TWO.)
- A. Amazon Connect
- B. AWS Site-to-Site VPN
- C. AWS Identity and Access Management (IAM)
- D. AWS Direct Connect
- E. AWS Key Management Service (AWS KMS)
Answer: B
Explanation:
AWS Site-to-Site VPN and AWS Direct Connect are AWS services that are connectivity services for a VPC. AWS Site-to-Site VPN is a service that enables you to securely connect your on-premises network or branch office site to your Amazon Virtual Private Cloud (Amazon VPC). You can establish VPN connections over the internet or over AWS Direct Connect1. AWS Direct Connect is a service that lets you establish a dedicated network connection between your network and one of the AWS Direct Connect locations. Using AWS Direct Connect, you can create a private connection between AWS and your datacenter, office, or colocation environment, which can reduce your network costs, increase bandwidth throughput, and provide a more consistent network experience than internet-based connections2. Amazon Connect is a service that lets you set up and manage a contact center in the cloud, but it does not provide network connectivity between the VPC and your on-premises network. AWS Key Management Service (AWS KMS) is a service that makes it easy for you to create and manage cryptographic keys and control their use across a wide range of AWS services and in your applications, but it does not provide network connectivity between the VPC and your on-premises network. AWS Identity and Access Management (IAM) is a service that enables you to manage access to AWS services and resources securely, but it does not provide network connectivity between the VPC and your on-premises network.
NEW QUESTION # 169
Which AWS service or feature offers security for a VPC by acting as a firewall to control traffic in and out of subnets?
- A. Network ACL
- B. Security groups
- C. AWSWAF
- D. AWS Security Hub
Answer: A
Explanation:
A network access control list (network ACL) is a feature that acts as a firewall for controlling traffic in and out of one or more subnets in a virtual private cloud (VPC). AWS Security Hub is a service that provides a comprehensive view of the security posture of AWS accounts and resources. Security groups are features that act as firewalls for controlling traffic at the instance level. AWS WAF is a web application firewall that helps protect web applications from common web exploits.
NEW QUESTION # 170
A company is building a serverless architecture that connects application data from multiple data sources. The company needs a solution that does not require additional code.
Which AWS service meets these requirements?
- A. Amazon CloudWatch
- B. Amazon Simple Queue Service (Amazon SQS)
- C. Amazon EventBridge
- D. AWS Lambda
Answer: C
Explanation:
Explanation
Amazon EventBridge is the service that meets the requirements of building a serverless architecture that connects application data from multiple data sources without requiring additional code. Amazon EventBridge is a serverless event bus service that allows you to easily connect your applications with data from AWS services, SaaS applications, and your own applications. You can use Amazon EventBridge to create rules that match events and route them to targets such as AWS Lambda functions, Amazon SNS topics, Amazon SQS queues, or other AWS services. Amazon EventBridge handles the event ingestion, delivery, security, authorization, and error handling for you34
NEW QUESTION # 171
A company hosts a large amount of data in AWS. The company wants to identify if any of the data should be considered sensitive.
Which AWS service will meet the requirement?
- A. Amazon CloudWatch
- B. Amazon Inspector
- C. Amazon Macie
- D. AWS Identity and Access Management (IAM)
Answer: C
Explanation:
Explanation
Amazon Macie is a fully managed service that uses machine learning and pattern matching to help you detect, classify, and better protect your sensitive data stored in the AWS Cloud1. Macie can automatically discover and scan your Amazon S3 buckets for sensitive data such as personally identifiable information (PII), financial information, healthcare information, intellectual property, and credentials1. Macie also provides you with a dashboard that shows the type, location, and volume of sensitive data in your AWS environment, as well as alerts and findings on potential security issues1.
The other options are not suitable for identifying sensitive data in AWS. Amazon Inspector is a service that helps you find security vulnerabilities and deviations from best practices in your Amazon EC2 instances2. AWS Identity and Access Management (IAM) is a service that helps you manage access to your AWS resources by creating users, groups, roles, and policies3. Amazon CloudWatch is a service that helps you monitor and troubleshoot your AWS resources and applications by collecting metrics, logs, events, and alarms4.
References:
1: What Is Amazon Macie? - Amazon Macie
2: What Is Amazon Inspector? - Amazon Inspector
3: What Is IAM? - AWS Identity and Access Management
4: What Is Amazon CloudWatch? - Amazon CloudWatch
NEW QUESTION # 172
A company wants to migrate its high-performance computing (HPC) application to Amazon EC2 instances. The application has multiple components. The application must have fault tolerance and must have the ability to fail over automatically.
Which AWS infrastructure solution will meet these requirements with the LEAST latency between components?
- A. Regional edge caches
- B. Multiple Availability Zones
- C. Multiple AWS Regions
- D. Multiple edge locations
Answer: B
Explanation:
Using EC2 instances in multiple Availability Zones is an AWS infrastructure solution that meets the requirements of migrating a high performance computing (HPC) application to AWS with fault tolerance and failover capabilities, and with the least latency between components. An Availability Zone is a physically isolated location within an AWS Region that has its own power, cooling, and network connectivity. EC2 instances within the same Region can communicate with each other using low-latency private IP addresses. By using EC2 instances in multiple Availability Zones, the company can achieve fault tolerance and failover for their HPC application, because they can distribute the workload and data across different locations that are independent of each other. If one Availability Zone becomes unavailable or impaired, the company can redirect the traffic and data to another Availability Zone without affecting the performance and availability of the application5
NEW QUESTION # 173
Which AWS service offers object storage?
- A. Amazon DynamoDB
- B. Amazon RDS
- C. Amazon S3
- D. Amazon Elastic File System (Amazon EFS)
Answer: C
Explanation:
Explanation
Amazon S3 is the AWS service that offers object storage. Object storage is a technology that stores and manages data in an unstructured format called objects. Each object consists of the data, metadata, and a unique identifier. Object storage is ideal for storing large amounts of unstructured data, such as photos, videos, email, web pages, sensor data, and audio files1. Amazon S3 provides industry-leading scalability, data availability, security, and performance for object storage2.
Amazon RDS is the AWS service that offers relational database storage. Relational database storage is a technology that stores and manages data in a structured format called tables. Each table consists of rows and columns that define the attributes and values of the data. Relational database storage is ideal for storing structured or semi-structured data, such as customer records, inventory, transactions, and analytics3.
Amazon Elastic File System (Amazon EFS) is the AWS service that offers file storage. File storage is a technology that stores and manages data in a hierarchical format called files and folders. Each file consists of the data and metadata, and each folder consists of files or subfolders. File storage is ideal for storing shared data that can be accessed by multiple users or applications, such as home directories, content repositories, media libraries, and configuration files4.
Amazon DynamoDB is the AWS service that offers NoSQL database storage. NoSQL database storage is a technology that stores and manages data in a flexible format called documents or key-value pairs. Each document or key-value pair consists of the data and metadata, and can have different attributes and values depending on the schema. NoSQL database storage is ideal for storing dynamic or unstructured data that requires high performance, scalability, and availability, such as web applications, social media, gaming, and IoT.
NEW QUESTION # 174
Using Amazon Elastic Container Service (Amazon ECS) to break down a monolithic architecture into microservices is an example of:
- A. a loosely coupled architecture.
- B. a stateful architecture.
- C. a tightly coupled architecture.
- D. a stateless architecture.
Answer: A
Explanation:
Explanation
Using Amazon Elastic Container Service (Amazon ECS) to break down a monolithic architecture into microservices is an example of a loosely coupled architecture. A loosely coupled architecture is one where the components are independent and can communicate with each other through well-defined interfaces. This allows for greater scalability, flexibility, and resilience. A tightly coupled architecture is one where the components are interdependent and rely on each other for functionality. This can lead to increased complexity, fragility, and difficulty in changing or scaling the system. Amazon ECS OverviewAWS Well-Architected Framework
NEW QUESTION # 175
Which task can only an AWS account root user perform?
- A. Configuring AWS WAF
- B. Changing the AWS Support plan
- C. Creating an Amazon EC2 instance key pair
- D. Deleting AWS resources
Answer: B
Explanation:
The AWS account root user is the email address that you use to sign up for AWS. The root user has complete access to all AWS services and resources in the account. The root user can perform tasks that only the root user can do, such as changing the AWS Support plan, closing the account, and restoring IAM user permissions34
NEW QUESTION # 176
Which AWS service or feature offers HTTP attack protection to users running public-facing web applications?
- A. AWS Shield Standard
- B. Security groups
- C. Network ACLs
- D. AWS WAF
Answer: D
Explanation:
AWS WAF is the AWS service or feature that offers HTTP attack protection to users running public-facing web applications. AWS WAF is a web application firewall that helps users protect their web applications from common web exploits, such as SQL injection, cross-site scripting, and bot attacks. Users can create custom rules to define the web traffic that they want to allow, block, or count. Users can also use AWS Managed Rules, which are pre-configured rules that are curated and maintained by AWS or AWS Marketplace Sellers. AWS WAF can be integrated with other AWS services, such as Amazon CloudFront, Amazon API Gateway, and Application Load Balancer, to provide comprehensive security for web applications. [AWS WAF Overview] AWS Certified Cloud Practitioner - aws.amazon.com
NEW QUESTION # 177
A company needs to test a new application that was written in Python. The code will activate when new images are stored in an Amazon S3 bucket. The application will put a watermark on each image and then will store the images in a different S3 bucket.
Which AWS service should the company use to conduct the test with the LEAST amount of operational overhead?
- A. AWS Lambda
- B. Amazon EC2
- C. AWS CodeDeploy
- D. Amazon Lightsail
Answer: A
Explanation:
AWS Lambda is a compute service that lets you run code without provisioning or managing servers. AWS Lambda executes your code only when needed and scales automatically, from a few requests per day to thousands per second. You pay only for the compute time you consume - there is no charge when your code is not running. With AWS Lambda, you can run code for virtually any type of application or backend service - all with zero administration. AWS Lambda runs your code on a high-availability compute infrastructure and performs all of the administration of the compute resources, including server and operating system maintenance, capacity provisioning and automatic scaling, code monitoring and logging
NEW QUESTION # 178
Which AWS benefit is demonstrated by on-demand technology services that enable companies to replace upfront fixed expenses with variable expenses?
- A. Pay-as-you-go pricing
- B. Global reach
- C. Economies of scale
- D. High availability
Answer: A
Explanation:
Pay-as-you-go pricing is an AWS benefit that demonstrates the ability of users to replace upfront fixed expenses with variable expenses. With pay-as-you-go pricing, users only pay for the resources they consume, without any long-term contracts or commitments. This can lower the total cost of ownership and increase the return on investment. Pay-as-you-go pricing also provides flexibility and scalability, as users can adjust their resource usage according to their changing needs and demands. AWS Cloud Value FrameworkAWS Certified Cloud Practitioner - aws.amazon.com
NEW QUESTION # 179
A company is running an application that is hosted on Amazon EC2 instances. The usage of the EC2 instances is higher during daytime hours than nighttime hours. The company wants to optimize the number of EC2 instances based on this usage pattern.
Which AWS service or instance purchasing option should the company use to meet these requirements?
- A. Reserved Instances
- B. AWS CloudFormation
- C. AWS Auto Scaling
- D. Spot Instances
Answer: C
Explanation:
AWS Auto Scaling is the AWS service that allows users to optimize the number of EC2 instances based on the usage pattern, as it automatically adjusts the capacity to maintain steady and predictable performance at the lowest possible cost. Spot Instances are a way to reduce the cost of EC2 instances by bidding on unused EC2 capacity, but they are not suitable for applications that require steady and reliable performance. Reserved Instances are a way to reduce the cost of EC2 instances by committing to a certain amount of usage for a period of time, but they are not flexible to adjust to the usage pattern. AWS CloudFormation is a way to automate the creation and management of AWS resources, but it does not optimize the number of EC2 instances based on the usage pattern. These concepts are explained in the AWS Cloud Practitioner Essentials course3.
NEW QUESTION # 180
A company wants to create a globally accessible ecommerce platform for its customers. The company wants to use a highly available and scalable DNS web service to connect users to the platform.
Which AWS service will meet these requirements?
- A. Amazon Route 53
- B. Amazon VPC
- C. Amazon EC2
- D. Amazon RDS
Answer: A
Explanation:
Explanation
Amazon Route 53 is a highly available and scalable Domain Name System (DNS) web service that can route internet traffic to the company's ecommerce platform1. Route 53 can also register domain names, check the health of resources, and provide global DNS features2. Route 53 can connect users to the platform by translating human-readable names like www.example.com into the numeric IP addresses that computers use to communicate with each other2. References: 1: Amazon Route 53 | DNS Service | AWS; 2: What is Amazon Route 53? - Amazon Route 53
NEW QUESTION # 181
A company wants to create a globally accessible ecommerce platform for its customers. The company wants to use a highly available and scalable DNS web service to connect users to the platform.
Which AWS service will meet these requirements?
- A. Amazon Route 53
- B. Amazon VPC
- C. Amazon EC2
- D. Amazon RDS
Answer: A
Explanation:
Amazon Route 53 is a highly available and scalable Domain Name System (DNS) web service that can route internet traffic to the company's ecommerce platform1. Route 53 can also register domain names, check the health of resources, and provide global DNS features2. Route 53 can connect users to the platform by translating human-readable names like www.example.com into the numeric IP addresses that computers use to communicate with each other2. Reference: 1: Amazon Route 53 | DNS Service | AWS; 2: What is Amazon Route 53? - Amazon Route 53
NEW QUESTION # 182
A company wants to develop a shopping application that records customer orders. The application needs to use an AWS managed database service to store data.
Which AWS service should the company use to meet these requirements?
- A. Amazon ElastiCache
- B. Amazon RDS
- C. Amazon Neptune
- D. Amazon Redshift
Answer: B
Explanation:
Explanation
A is correct because Amazon RDS is the AWS service that provides a managed relational database service that supports various database engines, such as MySQL, PostgreSQL, Oracle, and SQL Server. B is incorrect because Amazon Redshift is the AWS service that provides a managed data warehouse service that is optimized for analytical queries. C is incorrect because Amazon ElastiCache is the AWS service that provides a managed in-memory data store service that supports Redis and Memcached. D is incorrect because Amazon Neptune is the AWS service that provides a managed graph database service that supports property graph and RDF models.
NEW QUESTION # 183
Who enables encryption of data at rest for Amazon Elastic Block Store (Amazon EBS)?
- A. AWS Trusted Advisor
- B. AWS Support
- C. AWS customers
- D. AWS Key Management Service (AWS KMS)
Answer: C
Explanation:
AWS customers are responsible for enabling encryption of data at rest for Amazon Elastic Block Store (Amazon EBS). Amazon EBS encryption offers a simple encryption solution for your EBS volumes that does not require you to build, maintain, and secure your own key management infrastructure. You can encrypt both the boot and data volumes of your EC2 instances. You can use AWS Key Management Service (AWS KMS) customer master keys (CMKs) or your own CMKs to encrypt your volumes2.
NEW QUESTION # 184
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