Which of the following is a benefit of operating in the AWS Cloud?
A. The ability to migrate on-premises network devices to the AWS Cloud B. The ability to expand compute, storage, and memory when needed C. The ability to host custom hardware in the AWS Cloud D. The ability to customize the underlying hypervisor layer for Amazon EC2
Answer: B Explanation: One of the benefits of operating in the AWS Cloud is the ability to expandcompute, storage, and memory when needed, which enables users to scale theirapplications and resources up or down based on demand. This also helps users optimizetheir costs and performance. The ability to migrate on-premises network devices to theAWS Cloud, the ability to host custom hardware in the AWS Cloud, and the ability tocustomize the underlying hypervisor layer for Amazon EC2 are not benefits of operating inthe AWS Cloud, as they are either not possible or not recommended by AWS
Question # 172
Which AWS service or feature enables users to encrypt data at rest in Amazon S3?
A. 1AM policies B. Server-side encryption C. Amazon GuardDuty D. Client-side encryption
Answer: B Explanation: Server-side encryption is an encryption option that Amazon S3 provides toencrypt data at rest in Amazon S3. With server-side encryption, Amazon S3 encrypts anobject before saving it to disk in its data centers and decrypts it when you download theobjects. You have three server-side encryption options to choose from: SSE-S3, SSE-C,and SSE-KMS. SSE-S3 uses keys that are managed by Amazon S3. SSE-C allows you tomanage your own encryption keys. SSE-KMS uses keys that are managed by AWS KeyManagement Service (AWS KMS)5.
Question # 173
A company runs a MySQL database in its on-premises data center. The company wants to run a copy of this database in the AWS Cloud. Which AWS service would support this workload?
A. Amazon RDS B. Amazon Neptune C. Amazon ElastiCache for Redis D. Amazon Quantum Ledger Database (Amazon QLDB)
Answer: A Explanation: Amazon Relational Database Service (Amazon RDS) is a web service thatmakes it easier to set up, operate, and scale a relational database in the cloud. It providescost-efficient and resizable capacity, while automating time-consuming administration taskssuch as hardware provisioning, database setup, patching, and backups. Amazon RDSsupports six popular database engines: Amazon Aurora, PostgreSQL, MySQL, MariaDB,Oracle Database, and SQL Server. Amazon RDS can support running a copy of a MySQLdatabase in the AWS Cloud, as it offers compatibility, scalability, and availability features.
Question # 174
A company wants to set up a high-speed connection between its data center and its applications that run on AWS. The company must not transfer data over the internet. Which action should the company take to meet these requirements?
A. Transfer data to AWS by using AWS Snowball. B. Transfer data to AWS by using AWS Storage Gateway. C. Set up a VPN connection between the data center and an AWS Region. D. Set up an AWS Direct Connect connection between the company network and AWS.
Answer: D Explanation: AWS Direct Connect is a cloud service solution that makes it easy toestablish a dedicated network connection from a customer’s premises to AWS. AWS DirectConnect does not involve the public internet, and therefore can reduce network costs,increase bandwidth throughput, and provide a more consistent network experience thaninternet-based connections. AWS Snowball is a petabyte-scale data transport service thatuses secure devices to transfer large amounts of data into and out of the AWS Cloud. AWSStorage Gateway is a hybrid cloud storage service that gives customers on-premisesaccess to virtually unlimited cloud storage. A VPN connection enables customers toestablish a secure and private connection between their network and AWS.
Question # 175
A company has an application that runs periodically in an on-premises environment. The application runs for a few hours most days, but runs for 8 hours a day for a week at the end of each month. Which AWS service or feature should be used to host the application in the AWS Cloud?
A. Amazon EC2 Standard Reserved Instances B. Amazon EC2 On-Demand Instances C. AWS Wavelength D. Application Load Balancer
Answer: B Explanation: Amazon EC2 On-Demand Instances are instances that let you pay for compute capacity by the hour or second (minimum of 60 seconds) with no long-termcommitments. This frees you from the costs and complexities of planning, purchasing, andmaintaining hardware and transforms what are commonly large fixed costs into muchsmaller variable costs. On-Demand Instances are suitable for applications with short-term,irregular, or unpredictable workloads that cannot be interrupted, such as periodicapplications that run for a few hours most days, but run for 8 hours a day for a week at theend of each month2. Amazon EC2 Standard Reserved Instances are instances thatprovide you with a significant discount (up to 75%) compared to On-Demand Instancepricing. In exchange, you select a term and make an upfront payment to reserve a certainamount of compute capacity for that term. Reserved Instances are suitable for applicationswith steady state or predictable usage that require reserved capacity3. AWS Wavelength isa service that enables developers to build applications that deliver ultra-low latency tomobile devices and users by deploying AWS compute and storage at the edge of the 5Gnetwork. Wavelength is suitable for applications that require single-digit millisecond latencies, such as game and live video streaming, machine learning inference at the edge,and augmented and virtual reality (AR/VR). Application Load Balancer is a service thatoperates at the request level (layer 7) and distributes incoming application traffic acrossmultiple targets, such as EC2 instances, containers, Lambda functions, and IP addresses.Application Load Balancer is suitable for applications that need advanced routingcapabilities, such as microservices or container-based architectures.
Question # 176
A company wants to launch its web application in a second AWS Region. The company needs to determine which services must be regionally configured for this launch. Which AWS services can be configured at the Region level? (Select TWO.)
A. Amazon EC2 B. Amazon Route 53 C. Amazon CloudFront D. AWS WAF E. Amazon DynamoDB
Answer: B,DExplanation: Amazon Route 53 and AWS WAF are AWS services that can be configured at the Region level. Amazon Route 53 is a highly available and scalable cloud DomainName System (DNS) web service that lets you register domain names, route traffic toresources, and check the health of your resources. AWS WAF is a web application firewallthat helps protect your web applications or APIs against common web exploits that mayaffect availability, compromise security, or consume excessive resources. Amazon EC2,Amazon CloudFront, and Amazon DynamoDB are AWS services that can be configured atthe global level or the Availability Zone level .
Question # 177
A company has created an AWS Cost and Usage Report and wants to visualize the report. Which AWS service should the company use to ingest and display this information?
A. Amazon QuickSight B. Amazon Pinpoint C. Amazon Neptune D. Amazon Kinesis
Answer: A Explanation: Amazon QuickSight is an AWS service that provides business intelligenceand data visualization capabilities. Amazon QuickSight enables you to ingest, analyze, anddisplay data from various sources, such as AWS Cost and Usage Reports, Amazon S3,Amazon Athena, Amazon Redshift, and Amazon RDS. You can use Amazon QuickSight tocreate interactive dashboards and charts that show insights and trends from your data. Youcan also share your dashboards and charts with other users or embed them into yourapplications.
Question # 178
A company is looking for a managed machine learning (ML) service that can recommend products based on a customer's previous behaviors. Which AWS service meets this requirement?
A. Amazon Personalize B. Amazon SageMaker C. Amazon Pinpoint D. Amazon Comprehend
Answer: A Explanation: The AWS service that meets the requirement of providing a managedmachine learning (ML) service that can recommend products based on a customer’sprevious behaviors is Amazon Personalize. Amazon Personalize is a fully managedservice that enables developers to create personalized recommendations for customersusing their own data. Amazon Personalize can automatically process and examine thedata, identify what is meaningful, select the right algorithms, and train and optimize apersonalized recommendation model2. Amazon SageMaker, Amazon Pinpoint, andAmazon Comprehend are other AWS services related to machine learning, but they do notprovide the specific functionality of product recommendation.
Question # 179
Which benefits can customers gain by using AWS Marketplace? (Select TWO.)
A. Speed of business B. Fewer legal objections C. Ability to pay with credit cards D. No requirement for product licenses for any products E. Free use of all services for the first hour
Answer: A,B Explanation: AWS Marketplace is a digital catalog that offers thousands of softwareproducts and solutions from independent software vendors (ISVs) and AWS partners.Customers can use AWS Marketplace to find, buy, and deploy software on AWS. Some ofthe benefits of using AWS Marketplace are:Speed of business: You can quickly and easily discover and deploy software thatmeets your business needs, without having to go through lengthy procurementprocesses. You can also use AWS Marketplace to test and compare differentsolutions before making a purchase decision. Fewer legal objections: You can benefit from standardized contract terms andconditions that are pre-negotiated between AWS and the ISVs. This reduces thetime and effort required to review and approve legal agreements.
Question # 180
A company wants to use guidelines from the AWS Well-Architected Framework to limit human error and facilitate consistent responses to events. Which of the following is a Well-Architected design principle that will meet these requirements?
A. Use AWS CodeDeploy. B. Perform operations as code. C. Migrate workloads to a Dedicated Host. D. Use AWS Compute Optimizer.
Answer: B Explanation: This is a design principle of the operational excellence pillar of the AWSWell-Architected Framework. Performing operations as code means using scripts,templates, or automation tools to perform routine tasks, such as provisioning, configuration,deployment, and monitoring. This reduces human error, increases consistency, andenables faster recovery from failures. You can learn more about the operational excellencepillar from this whitepaper or this digital course.