Domain 3: Cloud Technology and Services

Question 1

What are the benefits in accessing a service such as S3 from the console or running the commands in the AWS CLI?

Answer 1

Using aws s3 commands in the AWS CLI helps to manage S3 objects.

Question 2

What do you use to connect public Amazon EC2 instances in a public subnet to the public internet?

Answer 2

Internet gateway.

Question 3

If you needed to use your existing server-bound software licenses, would you choose a dedicated host or shared host?

Answer 3

A dedicated host.

Question 4

Are EC2 instances an Availability Zone resilient service or a Regional resilient service?

Answer 4

Availability Zone resilient service.

Question 5

What is the local storage of an EC2 instances?

Answer 5

Instance Store.

Question 6

What type of storage would you choose if you needed persistent storage for your EC2 instance?

Answer 6

Elastic Block Store (EBS)

Question 7

Where would you check to find the Amazon EC2 instances ID, instance profile permissions, and kernel information?

Answer 7

You can get the instance ID, public keys, public IP address, and other information from the instance metadata using:
http://169.254.169.254/latest/meta-data/.

Question 8

Which AWS Snow Family service would you choose to transfer hundreds of petabytes of data and exabyte scale data sets into AWS?

Answer 8

AWS Snowmobile.

Question 9

Is an Amazon VPC a globally resilient service or a Regional resilient service?

Answer 9

Regional resilient service.

Question 10

Are network access control lists (network ACLs) stateful or stateless?

Answer 10

Stateless.

Question 11

Are security groups stateful or stateless?

Answer 11

Stateful.

Question 12

Can you use a NAT gateway in a private subnet?

Answer 12

No, NAT gateways sit in a public subnet to allow private resources access to the internet or the AWS public zones.

Question 13

What type of storage does S3 offer? Block, file, or object?

Answer 13

Object storage.

Question 14

What type of storage does EBS offer? Block, file or object?

Answer 14

Block storage.

Question 15

What type of storage does EFS? Block, file, or object?

Answer 15

File storage.

Question 16

What type of level service is Amazon Rekognition?

Answer 16

Rekognition is an AI service level.

Question 17

What type of level service is Amazon Sagemaker?

Answer 17

Sagemaker is a machine learning level service.

Question 18

What AWS analytic service can help you identify personable identifiable information (PII)?

Answer 18

Amazon Macie.

Question 19

What AWS analytic service is a query service?

Answer 19

Amazon Athena.

Question 20

Which AWS service would you use for inter-process and services messaging?

Answer 20

Amazon SQS

Question 21

What are benefits of running a database on Amazon RDS compared to an on-premises database?

Answer 21

1. RDS provides backups by default
   you can decide how frequently backups are completed. However, AWS manages the backing up of the data and the storing of the backup. Backups are automated based on the frequency that you define.
2. RDS database computer can be easily scaled
   can be scaled up or down based on demand. Often with little or no downtime. Database instances can also be scaled vertically to give it more memory or compute capacity.

Question 22

A systems admin wants to migrate a static website to AWS. The systems admin wants to stop paying for the compute power necessary to run the web servers.
Which AWS service will meet these requirements?

Answer 22

S3.
S3 provides object storage. Additionally, you can use S3 to host static website content, including HTML, JavaScript, and CSS files. With S3, you don’t need an always-running EC2 instance.

Question 23

A web developer has limited knowledge of AWS networking services such as VPC, Elastic Load Balancing, and Auto Scaling, but wants to host a highly available web app.
Which AWS service would automatically handle the deployment and reduce the complexity for the developer?

Answer 23

AWS Elastic Beanstalk.

gives you the ability to deploy and manage web apps in AWS Cloud without having to understand or manage the underlying infrastructure.

Question 24

Which AWS service automatically handles app health monitoring?

Answer 24

AWS Elastic Beanstalk.

Elastic Beanstalk gives you the ability to deploy and manage apps in AWS Cloud without you having to understand or manage the underlying infrastructure. Elastic Beanstalk also includes functionality to monitor the health of your app.

Question 25

A business-critical app requires multi-Region deployment to meet availability service level agreements (SLAs). Which AWS service or feature should be used for network routing and load balancing? for this app?

Answer 25

Route 53. Route 53 is a DNS service that can route traffic to resources. You can use Route 53 to implement traffic routing across multiple Regions to meet availability SLAs.

Question 26

What element defines an AWS Availability Zone?

Answer 26

**One or more physical data center with redundant power and network.** AWS infrastructure built with redundancy to avoid single points of failure. AZs have low-latency connections between them within a Region.

Question 27

What should AWS edge locations be used for?

Answer 27

1. **Delivering content closer to users.** Edge locations are used to host the content delivery network (CDN) service Amazon CloudFront, which gives you the ability to cache frequently accessed data closer to end users. This can reduce latency in data retrieval times for end users all over the world. 2. **Reducing the load on Amazon EC2 based web servers** When data is cached to an edge location and an end user requests data, the request is first routed to the edge location. If the data is found there, it’s returned to the end user and the request never reaches the back-end server.

Question 28

A company needs to securely deliver data, videos, apps, and APIs to users globally with low latency. Which AWS service will meet this requirement?

Answer 28

CloudFront. CloudFront is a fast content delivery network (CDN) service that securely delivers data, videos, apps and APIs to users globally with low latency and high transfer speeds.

Question 29

A company needs a database for queries. The database must summarize columns of data for analytical reports. Which AWS service will meet these requirements?

Answer 29

Amazon Redshift. Redshift is a fully managed, petabyte-scale data warehouse service. You can use Redshift as a columnar database. Redshift can provide fast retrieval, which is often necessary in analytical apps.

Question 30

What is Amazon Neptune?

Answer 30

A fast, reliable, fully managed *graph* database service that makes it easy to build and run apps that work with highly connected datasets.

Question 31

What is Amazon Aurora?

Answer 31

A fully managed *relational* database engine that’s compatible with MySQL and PostgreSQL.

Question 32

What is DynamoDB?

Answer 32

A serverless, *NoSQL*, fully managed database with single digit millisecond performance at any scale.

Question 33

What AWS services offer compute capabilities?

Answer 33

1. EC2. Provides you with with the ability to provision virtual servers in the AWS Cloud. 2. AWS Lambda. a serverless service that provides you with the ability to run code without the need to provision or manage servers.

Question 34

Which AWS service can convert text to lifelike speech?

Answer 34

Amazon Polly. gives you the ability to create apps that talk. with Polly you can build entirely new categories of speech-enabled products.

Question 35

Which services or features support data replication across AWS Regions?

Answer 35

1. S3. supports cross-region replication. When cross-region replication is turned on, any new object that’s uploaded will be replicated to the destination S3 bucket. 2. RDS. One RDS DB instance resides in a single region. With RDS, you can create read replicas across Regions. RDS replicates any data from the primary DB instance to the read replicas across Regions.

Question 36

Which AWS service can be used to decouple apps?

Answer 36

Amazon Simple Queue Service (SQS) SQS is a fully managed message queue service that provides you with the ability to decouple and scale microservices, distributed systems, and serverless apps. Amazon SQS eliminates the complexity and overhead associated with managing and operating message-oriented middleware, and empowers developers to focus on differentiating work.

Question 37

Which AWS service can be used to provide an on-demand, cloud-based contact center?

Answer 37

Amazon Connect.

Question 38

Which AWS service can analyze a set of documents to generate valuable insights from text?

Answer 38

Amazon Comprehend. uses a pre-trained model to gain insights about the content of documents.

Question 39

Company is running an app replicated on 6 Linux-based EC2 instances across 2 AZs in a Region. The app needs shared access to data. The data is going to be frequently changed by the app within existing data files. Which AWS storage solution would meet the company’s needs with the LEAST operational overhead?

Answer 39

Elastic File Storage (EFS). a shared file system that gives EC2 instances the ability to share access to data in different AZs in the same Region.

Question 40

Company needs to establish a dedicated and isolated network connection between the company’s on premises data center and AWS. Which AWS service will meet this requirement?

Answer 40

AWS Direct Connect. can establish a secure and consistent network connection with dedicated links that are isolated from the internet.

Question 41

Company requires an encrypted connection from the company’s on-premises data center to AWS. The connection must use the company’s existing internet connection. Which solution will meet these requirements?

Answer 41

Site-to-Site VPN. creates an encrypted network path between your on-premises network and your cloud network. uses the internet.

Question 42

What is AWS Client VPN?

Answer 42

a managed, client-based VPN service. Client VPN give you the ability to securely access your AWS resources and resources in your on-premises network. You can access your resources from any location by using an OpenVPN-based VPN client. provides network connections for laptops, not data centers.

Question 43

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?

Answer 43

EC2.

Question 44

Which AWS service provides virtually unlimited throughput and scale?

Answer 44

DynamoDB

Question 45

What is Amazon Transcribe?

Answer 45

A speech recognition service that you can use to convert audio to text.

Question 46

What is Amazon Textract?

Answer 46

a service that uses ML to automatically extract text, handwriting, and data from scanned documents. Can use Textract to extract data from documents like IDs, receipts and invoices, forms tables and more.

Question 47

What is AWS CodeDeploy?

Answer 47

a deployment service used to automate app deployment on compute resources like EC2 instances, on-premises instances, serverless Lambda functions or ECS services.

Question 48

What is AWS Resource Access Manager (RAM)?

Answer 48

a service that gives you the ability to securely share AWS resources with any AWS account or within your Organization.

Question 49

What is AWS CloudFormation?

Answer 49

a service used to model, provision, and manage AWS resources with infrastructure as code. CloudFormation requires knowledge of networking services to provision the resources.

Question 50

What is Amazon Lightsail?

Answer 50

a virtual private server (VPS) provider and is the easiest way to get started with AWS for developers, small businesses, students, and other users who need a solution to build and host their apps on cloud. Provides developers compute, storage, and networking capacity and capabilities to deploy and manage websites and web apps in the cloud.

Question 51

Which AWS service provides serverless data integration?

Answer 51

AWS Glue •A serverless data integration service. You can use AWS Glue to prepare, move, and integrate data from multiple sources and manage all the data in one centralized location.