Free Amazon Web Services CLF-C02 Practice Exam with Questions & Answers | Set: 5

AWS Global Accelerator is a service that improves network performance by sending traffic through the AWS worldwide network infrastructure. It uses the AWS global network to direct TCP or UDP traffic to a healthy application endpoint in the closest AWS Region to the client. This provides improvements in terms of latency, throughput, and jitter. Global Accelerator also introduces features such as TCP termination at the edge, jumbo frame support, and large receive side window and TCP buffers to optimize data transfer12. Route table, AWS Transit Gateway, and Amazon VPC are not services or features that improve network performance by sending traffic through the AWS worldwide network infrastructure. Route table is a resource that defines how traffic is routed within a VPC3. AWS Transit Gateway is a service that enables you to connect your VPCs and on-premises networks to a single gateway4. Amazon VPC is a service that lets you provision a logically isolated section of the AWS Cloud where you can launch AWS resources in a virtual network that you define5. References: Achieve up to 60% better performance for internet traffic with AWS Global Accelerator, Improving Performance on AWS and Hybrid Networks, Route tables, AWS Transit Gateway, Amazon Virtual Private Cloud (VPC)

Amazon Redshift is a fast, fully managed, petabyte-scale data warehouse service that makes it simple and cost-effective to analyze all your data using your existing business intelligence tools. You can start small with no commitments, and scale to petabytes for less than a tenth of the cost of traditional solutions. Amazon Redshift does not require manual hardware and software management, as AWS handles all the tasks such as provisioning, patching, backup, recovery, failure detection, and repair12. Amazon Redshift also offers serverless capabilities, which allow you to access and analyze data without any configurations or capacity planning. Amazon Redshift automatically scales the data warehouse capacity to deliver fast performance for even the most demanding and unpredictable workloads3. Therefore, Amazon Redshift meets the requirements of the company, compared to the other options.

The other options are not suitable for the company’s requirements, because:

Amazon DocumentDB (with MongoDB compatibility) is a fast, scalable, highly available, and fully managed document database service that supports MongoDB workloads. It is not designed for petabyte-scale data warehousing or analytics4.

Amazon Neptune is a fast, reliable, and fully managed graph database service that makes it easy to build and run applications that work with highly connected datasets. It is not designed for petabyte-scale data warehousing or analytics5.

Amazon ElastiCache is a fully managed in-memory data store and cache service that supports Redis and Memcached. It is not designed for petabyte-scale data warehousing or analytics.

What is Amazon Redshift? - Amazon Redshift

Amazon Redshift Features - Amazon Redshift

Amazon Redshift Serverless - Amazon Redshift

What Is Amazon DocumentDB (with MongoDB compatibility)? - Amazon DocumentDB (with MongoDB compatibility)

What Is Amazon Neptune? - Amazon Neptune

[What Is Amazon ElastiCache for Redis? - Amazon ElastiCache for Redis]

Understanding EC2 Image Builder: EC2 Image Builder is a fully managed service that simplifies the creation, maintenance, validation, and testing of Amazon Machine Images (AMIs).

Why Use EC2 Image Builder:

Automation: Automates the creation and management of AMIs, reducing manual efforts and the risk of errors.

Customization: Allows you to customize the images to include necessary software, configurations, and security settings.

Compliance: Ensures that the images comply with your security and operational standards through continuous monitoring and testing.

How to Implement EC2 Image Builder:

Create a Recipe: Define an image recipe specifying the base image and components to be included.

Build Pipeline: Set up an image pipeline that automates the building and testing of the AMI based on a schedule or trigger.

Distribute Images: Use the produced AMIs across multiple AWS regions and accounts as needed.

EC2 Image Builder

According to theAWS Shared Responsibility Model, AWS is responsible for the security "of" the cloud (such as protecting the infrastructure, including hardware, software, networking, and facilities that run AWS Cloud services). In contrast, customers are responsible for security "in" the cloud. This includes configuring and using AWS services securely.

D. Use AWS Identity and Access Management (IAM) according to the principle of least privilegeis a customer's responsibility. Customers must manage their credentials, control access to resources, and ensure that IAM policies follow the principle of least privilege, which means granting only the permissions necessary to perform a task.

Why other options are not suitable:

A. Patch the Amazon DynamoDB operating system: AWS is responsible for managing and patching the infrastructure for managed services like DynamoDB.

B. Secure Amazon CloudFront edge locations by allowing physical access according to the principle of least privilege: AWS handles physical security of its edge locations.

C. Protect the hardware that runs AWS services: AWS is responsible for protecting the physical hardware that runs AWS services.

Migration Evaluator is a cloud-based service that provides organizations with a comprehensive assessment of their current IT environment and estimates the cost savings and performance improvements that can be achieved by migrating to AWS. Migration Evaluator helps users build a data-driven business case for AWS by discovering over-provisioned on-premises instances,providing recommendations for cost-effective AWS alternatives, and analyzing existing licenses and cost comparisons of Bring Your Own License (BYOL) and License Included (LI) options

The ability to scale resources up and down based on application load is tied to the advantage of "Stop guessing capacity." This feature allows users to scale resources automatically to match the demand, thereby avoiding over-provisioning or under-provisioning of resources. "Go global in minutes," "Benefit from massive economies of scale," and "Trade fixed expense for variable expense" are other advantages of cloud computing, but they do not specifically address scaling resources up and down based on load.

Amazon RDS is a fully managed relational database service that supports several database engines, including PostgreSQL. Amazon RDS can run a managed PostgreSQL database that provides online transaction processing (OLTP), which is a type of database workload that handles frequent read and write operations on small amounts of data. Amazon RDS for PostgreSQL offers high performance, availability, scalability, security, and compatibility with the PostgreSQL community edition. Amazon RDS also provides automated backups, point-in-time recovery, encryption, monitoring, and maintenance for PostgreSQL databases. References:

Hosted PostgreSQL - Amazon RDS for PostgreSQL

OLTP Database, MySQL And PostgreSQL ManagedDatabase - Amazon Aurora

PostgreSQL options on AWS: Self- managed, managed, and serverless

Amazon Elastic File System (Amazon EFS)is a scalable, fully managed, shared file storage service that is accessible from multiple Amazon EC2 instances. EFS is designed to provide highly available and durable file storage that can be mounted across multiple instances, making it ideal for shared file access.

Why other options are not suitable:

A. AWS Direct Connect: A network service to establish a dedicated network connection to AWS, not a file-sharing solution.

B. AWS Snowball Edge: A data transfer device for migrating data to and from AWS, not for ongoing file sharing.

C. AWS Backup: A service for centralized backup management, not for sharing files between EC2 instances.

 Amazon Neptune is a fully managed graph database service on AWS. A graph database is a type of database that stores and queries data as a network of nodes and edges, representing entities and relationships. Graph databases are useful for applications that deal with highly connected data, such as social networks, recommendation engines, fraud detection, and knowledge graphs45. Amazon Neptune is a fast, reliable, and scalable graph database service that supports two popular graph models: property graphs and RDF. Amazon Neptune also supports two open standards for querying graphs: Apache TinkerPop Gremlin and SPARQL. Amazon Neptune handles the heavy lifting of managing the database, such as provisioning, patching, backup, recovery, encryption, and replication456. References: 4: Managed Graph Database - Amazon Neptune - AWS, 5: Amazon Neptune – A Fully Managed Graph Database Service, 6: Working with AWS Neptune. Neptune is a fully-managed graph … - Medium

AWS provides an Attestation of Compliance (AOC) report for specific AWS services to assist companies in achieving Payment Card Industry Data Security Standard (PCI DSS) compliance in the cloud. This report demonstrates that AWS services meet the necessary PCI DSS requirements. AWS does not offer physical inspections of data centers by appointment, nor does it provide certifications for any application running on AWS. Additionally, AWS does not provide professional PCI compliance services; companies must manage their PCI compliance in their environment.

AWS CodeStar is a service that enables you to quickly develop, build, and deploy applications on AWS. It provides a unified user interface for managing your application lifecycle, including code repositories, build pipelines, deployments, and project dashboards. AWS CodeStar also integrates with other AWS services, such as AWS CodeCommit, AWS CodeBuild, AWS CodeDeploy, and AWS CodePipeline, to create a complete CI/CD pipeline for your application12. References:

AWS CodeStar

AWS Certified Cloud Practitioner Exam Guide

Security groups and network ACLs are two AWS services that can be used to block network traffic to an instance. Security groups are virtual firewalls that control the inbound and outbound traffic for your instances at the instance level. You can specify which protocols, ports, and source or destination IP addresses are allowed or denied for each instance. Security groups are stateful, which means that they automatically allow return traffic for any allowed inbound or outbound traffic123. Network ACLs are virtual firewalls that control the inbound and outbound traffic for your subnets at the subnet level. You can create rules to allow or deny traffic based on protocols, ports, and source or destination IP addresses. Network ACLs are stateless, which means that you have to explicitly allow return traffic for any allowed inbound or outbound traffic456. References: 1: Security groups for your VPC - Amazon Virtual Private Cloud, 2: Security Groups for Your VPC - Amazon Elastic Compute Cloud, 3: AWS Security Groups: Everything You Need to Know, 4: Network ACLs - Amazon Virtual Private Cloud, 5: Control traffic to subnetsusing network ACLs - Amazon Virtual Private Cloud, 6: AWS Network ACLs: Everything You Need to Know

Elasticity is a characteristic of the AWS Cloud that helps users eliminate underutilized CPU capacity. Elasticity refers to the ability to dynamically provision and de-provision computing resources as per demand, ensuring that the application or service always has the required resources to operate efficiently. Elasticity helps users optimize performance and costs, as theyonly pay for the resources they use and avoid wasting resources when the demand is low345. References: 3: Which characteristic of the aws cloud helps users eliminate …, 4: AWS Elastic Load Balancing and Application Load Balancer, 5: Which characteristic of the AWS Cloud helps users eliminate …

Spot Instances are a type of EC2 instance that let you bid on unused compute capacity, which AWS offers at a discount of up to 90% compared to On-Demand prices1. Spot Instances are suitable for fault-tolerant, stateless, or flexible applications that can handle interruptions2. Spot Instances can be interrupted with a two-minute warning when EC2 needs the capacity back3. The other options are not pricing models that will interrupt a running EC2 instance if capacity becomes temporarily unavailable

 The AWS service or tool that provides recommendations to help users get rightsized Amazon EC2 instances based on historical workload usage data is AWS Compute Optimizer. AWS Compute Optimizer is a service that analyzes the configuration and performance of the AWS resources, such as Amazon EC2 instances, and provides recommendations for optimal resource types and sizes based on the workload patterns and metrics. AWS Compute Optimizer helps users improve the performance, availability, and cost efficiency of their AWS resources. AWS Pricing Calculator, AWS App Runner, and AWS Systems Manager are not the best services or tools to use for this purpose. AWS Pricing Calculator is a tool that helps users estimate the cost of using AWS services based on their requirements and preferences. AWS App Runner is a service that helps users easily and quickly deploy web applications and APIs without managing any infrastructure. AWS Systems Manager is a service that helps users automate and manage the configuration and operation of their AWS resources and applications34