AWS Course - Mini Quizes - Q3

S09/Q13: Which AWS service can create complex graphs for fraud detection? A. Redshift B. Neptune C. QLDB D. Glue

Correct Anser: B Amazon Neptune is a fast, reliable, fully-managed graph database service that makes it easy to build and run applications that work with highly connected datasets. It can be used for knowledge graphs, fraud detection, recommendations engines, social networking, etc.

S09/Q15: A company would like to set up a fully managed MongoDB database. Which AWS database is best-suited for this task? 1. DocumentDB 2. ElastiCache 3. RDS 4. Neptune

Correct Answer: A Amazon DocumentDB (with MongoDB compatibility) is a fast, calable, highly available, and fully managed document database service that supports MongoDB workloads.

S09/Q11: Which AWS service is an immutable ledger database? A. QLDB B. EMR C. Managed Blockchain D. Inspector

Correct Answer: A Amazon QLDB is a fully managed ledger database that provides a transparent, immutable, and cryptographically verifiable transaction log owned by a central trusted authority. Amazon QLDB tracks each and every application data change and maintains a complete and verifiable history of changes over time.

S09/Q14: Which AWS serverless service can use machine learning-powered business intelligence to create interactive dashboards such as business analytics? A. Quicksight B. Aurora C. Athena D. Managed Blockchain

Correct Answer: A Amazon QuickSight is a fast, cloud-powered business intelligence (BI) service that makes it easy for you to deliver insights to everyone in your organization. You can create and publish interactive dashboards.

S09/Q12: You would like to set up a NoSQL database that can scale with no downtime and can handle millions of requests per second. Which AWS database is best suited for this work? A. DynamoDB B. RDS C. Redshift D. Athena

Correct Answer: A DynamoDB is a fast and flexible non-relational database service for any scale. It can scale with no downtime, it can process millions of requests per second, and is fast and consistent in performance.

S09/Q17: RDS Multi-AZ deployments' main purpose is high availability, while RDS Read replicas' main purpose is scalability. A. True B. False

Correct Answer: A RDS Multi-AZ deployments' main purpose is high availability, and RDS Read replicas' main purpose is scalability. Moreover, Multi-Region deployments' main purpose is disaster recovery and local performance.

S09/Q07: How can you create Hadoop clusters to analyze and process a vast amount of data? A. EMR B. Athena C. EC2 Instances D. Redshift

Correct Answer: A Amazon EMR is a web service that enables businesses, researchers, data analysts, and developers to easily and cost-effectively process vast amounts of data. EMR helps creating Hadoop clusters (Big Data) to analyze and process vast amount of data Amazon Elastic MapReduce (EMR) is an Amazon Web Services (AWS) tool for big data processing and analysis

S09/Q06: You would like to migrate databases to AWS while still being able to use the database during the migration. What service allows you to do this? A. Elastic MapReduce (EMR) B. Database Migration Service (DMS) C. AWS Storage Gateway D. Snowball

Correct Answer: B AWS Database Migration Service helps you migrate databases to AWS quickly and securely. The source database remains fully operational during the migration, minimizing downtime to applications that rely on the database.

S09/Q08: Which in-memory AWS database can you use to reduce the load off databases and has high performance, low latency? A. Redshift B. ElastiCache C. RDS D. DynamoDB

Correct Answer: B Amazon ElastiCache is a web service that makes it easy to deploy and run Memcached or Redis protocol-compliant server nodes in the cloud. ElastiCache caches are in-memory databases with high performance, low latency. They help reduce load off databases for read intensive workloads.

S10/Q02: You would like a serverless service to launch Docker containers with no infrastructure to provision. Which AWS service should you use? A. ECS B. Fargate C. ECR D. Lambda

Correct Answer: B Fargate allows you to launch Docker containers on AWS, and you don't need to provision and maintain the infrastructure (=no EC2 instances to manage). It is serverless. Wrong Answer: A ECS allows you to launch Docker containers on AWS, but you must provision and maintain the infrastructure. It is not serverless Wrong Answer: C Elastic Container Registry (ECR) is a service where you store your Docker image so they can be run by ECS or Fargate. Wrong Answer: D Lambda is a serverless service but does not launch Docker containers.

S10/Q01: How do you get charged in AWS Lambda? A. Per programming language B. Per number of functions C. Per call and per duration D. Per inactive time

Correct Answer: C In AWS Lambda, you are charged per request and compute time, that's it.

S09/Q09: What is the name of a central repository to store structural and operational metadata for data assets in AWS Glue? A. Glue Data Table B. Glue Data Dictionary C. Glue Data Catalog

Correct Answer: C The AWS Glue Data Catalog is a central repository to store structural and operational metadata for all your data assets. For a given data set, you can store its table definition, physical location, add business relevant attributes, as well as track how this data has changed over time. Wrong Answer: A - This does not exist

S09/Q04: You would like to use a serverless service to prepare data so it can be loaded for analytics. Which service would you use? A. Athena B. RDS C. Glue D. ElastiCache

Correct Answer: C AWS Glue is a fully managed extract, transform, and load (ETL) service that makes it easy for customers to prepare and load their data for analytics. Wrong Answer: A Amazon Athena is an interactive query service that makes it easy to analyze data in Amazon S3 using standard SQL. Athena is serverless, so there is no infrastructure to manage, and you pay only for the queries that you run. However, it does not have extract, transform, and load (ETL) capacity. Wrong Answer: B Amazon Relational Database Service (RDS) makes it easy to set up, operate, and scale a relational database in the cloud. It is not serverless, and it does not have extract, transform, and load (ETL) capacity.

S10/Q11: Which AWS serverless service can be used by developers to create APIs? A. ECR B. Lambda C. API Gateway

Correct Answer: C Amazon API Gateway is a fully managed serverless service that makes it easy for developers to create, publish, maintain, monitor, and secure APIs at any scale. Wrong Answer: A Amazon Elastic Container Registry (ECR) is a fully-managed Docker container registry that makes it easy for developers to store, manage, and deploy Docker container images. It is not used to create APIs. Wrong Answer: B AWS Lambda lets you run code without provisioning or managing servers. It is a serverless service, but it is not used to create APIs.

S09/Q16: Which exclusive DynamoDB feature is an in-memory cache that can improve your performance up to 10x? A. ElastiCache B. Edge Locations C. DynamoDB Accelerator D. Snowball Edge

Correct Answer: C Amazon DynamoDB Accelerator (DAX) is a fully managed, highly available, in-memory cache for Amazon DynamoDB that delivers up to a 10 times performance improvement—from milliseconds to microseconds—even at millions of requests per second. Wrong Answer: A Amazon ElastiCache is a web service that makes it easy to deploy, operate, and scale an in-memory cache in the cloud. Despite being an in-memory cache service, it is not exclusively for DynamoDB, and can be used for other databases for example.

S10/Q03: A complete cloud beginner would like to create a simple application with predictable pricing. What service should this person use? A. EC2 B. Lambda C. Lightsail D. EasyStart

Correct Answer: C Amazon Lightsail is designed to be the easiest way to launch and manage a virtual private server with AWS. Lightsail plans include everything you need to jumpstart your project - a virtual machine, SSD- based storage, data transfer, DNS management, and a static IP address - for a low, predictable price. It can be used to create a simple web application, a website or a dev/test environment.

S09/Q01: You want to create a decentralized blockchain on AWS. Which AWS service would you use? A. DocumentDB B. QLDB (Amazon Quantum Ledger Database) C. Managed Blockchain D. Quicksight

Correct Answer: C Amazon Managed Blockchain is a fully managed service that makes it easy to create and manage scalable blockchain networks using the popular open source frameworks Hyperledger Fabric and Ethereum. It allows multiple parties to execute transactions without the need of a trusted, central authority. Wrong Answer: B Amazon QLDB is a fully managed ledger database that provides a transparent, immutable, and cryptographically verifiable transaction log ‎owned by a central trusted authority. Amazon QLDB can be used to track each and every application data change and maintains a complete and verifiable history of changes over time.

S09/Q02: Which AWS database is a data warehouse? A. DynamoDB B. ElastiCache C. Redshift D. RDS

Correct Answer: C Amazon Redshift is a fully managed, petabyte-scale data warehouse service in the cloud. Wrong Answer: D Amazon Relational Database Service RDS) is a web service that makes it easier to set up, operate, and scale a relational database in the AWS Cloud. It provides cost-efficient, resizable capacity for an industry-standard relational database and manages common database administration tasks. It is not a data warehouse.

S09/Q10: Which of the following databases is a managed service with SQL capability suited for Online Transaction Processing (OLTP)? A. DynamoDB B. Redshift C. RDS D. MySQL on EC2

Correct Answer: C Amazon Relational Database Service (RDS) is a SQL managed service that makes it easy to set up, operate, and scale a relational database in the cloud. It is suited for OLTP workloads Wrong Answer: A DynamoDB is a fully managed NoSQL database Wrong Answer: B Redshift is a fully managed, SQL data warehouse service in the cloud. It is suited for OLAP workloads, not OLTP.

S10/Q04: What is the name of the software development platform that allows you to run applications the same way, regardless of where they are run? A. Dolphin B. Shark C. Docker D. ECS

Correct Answer: C Docker is a software development platform that allows you to run applications the same way, regardless of where they are run. It can scale containers up and down within seconds.

S10/Q06: Which AWS service allows you to launch Docker containers on AWS, but requires you to provision and maintain the infrastructure? A. ECR B. EC2 C. ECS D. Fargate

Correct Answer: C ECS allows you to launch Docker containers on AWS, but you must provision and maintain the infrastructure (i.e. EC2 instances). Wrong Answer: A Elastic Container Registry (ECR) is a service where you store your Docker image so they can be run by ECS or Fargate. Wrong Answer: B Amazon Elastic Compute Cloud (Amazon EC2) is a web service that provides secure, resizable compute capacity in the cloud. It does not allow you to launch Docker containers on AWS by itself. Wrong Answer: D Fargate allows you to launch Docker containers on AWS, and you don't need to provision and maintain the infrastructure (=no EC2 instances to manage). It is serverless.

S10/Q10: Where should you store your private Docker images so they can be run by ECS or Fargate? A. Elastic Docker Registry B. Elastic Docker File Registry C. Elastic Container Registry D. Elastic Private Container Registry

Correct Answer: C Elastic Container Registry (ECR) is a service where you store your Docker image so they can be run by ECS or Fargate. Wrong Answer: A This service does not exist. It is made up with words related to the service. Wrong Answer: B This service does not exist. It is made up with words related to the service. Wrong Answer: D This service does not exist. It is made up with words related to the service.

S10/Q07: Which of the following statements is INCORRECT regarding the definition of the term "serverless"? A. Serverless allows you to deploy functions as a service B. There are no servers C. You don't need to manage servers D. Lambda is the serverless pioneer

Correct Answer: C Serverless does not mean that there are no servers, you just do not manage, provision and see them, but they do exist.

S10/Q05: How would you best describe "event-driven" in AWS Lambda? A. Happens on a certain day B. Happens at a certain time C. Happens on a regular basis D. Happens when needed

Correct Answer: D "Event-driven" in Lambda means that functions are invoked when needed. They are triggered.

S10/Q09: A company needs to run thousands of jobs but would like to NOT manage the compute resources. What service can it use? A. ECS B. EC2 Spot Instances C. EC2 Instances D. Batch

Correct Answer: D AWS Batch enables developers, scientists, and engineers to easily and efficiently run hundreds of thousands of batch computing jobs on AWS. AWS Batch dynamically provisions the optimal quantity and type of compute resources (e.g., CPU or memory-optimized instances) based on the volume and specific resource requirements of the batch jobs submitted. Wrong Answer: A ECS allows you to launch Docker containers on AWS, but you must provision and maintain the infrastructure (i.e. EC2 instances). Wrong Answer: B You need to manage the compute resources with EC2 Spot Instances. Wrong Answer: C You need to manage the compute resources with EC2 Instances.

S09/Q03: Which AWS database is fully serverless and has SQL capabilities? A. RDS B. Aurora C. DynamoDB D. Athena

Correct Answer: D Amazon Athena is an interactive query service that makes it easy to analyze data in Amazon S3 using standard SQL. Athena is serverless, so there is no infrastructure to manage, and you pay only for the queries that you run. Wrong Answer: A Amazon Relational Database Service (RDS) makes it easy to set up, operate, and scale a relational database in the cloud. It has SQL capabilities but it is not fully serverless. Wrong Answer: B Amazon Aurora is a relational database engine that combines the speed and reliability of high-end commercial databases with the simplicity and cost-effectiveness of open source databases. It has SQL capabilities but it is not necessarily serverless. Wrong Answer: C DynamoDB is a fast and flexible non-relational database service for any scale. It is serverless but does not have SQL capabilities

S09/Q05: Which relational database is a proprietary technology from AWS and is cloud-optimized? A. DynamoDB B. Oracle C. Athena D. Aurora

Correct Answer: D Amazon Aurora is a MySQL and PostgreSQL-compatible relational database built for the cloud, that combines the performance and availability of traditional enterprise databases with the simplicity and cost-effectiveness of open source databases. It is a proprietary technology from AWS. Wrong Answer: A DynamoDB is a fast and flexible non-relational database service for any scale. While it is proprietary and it is cloud optimized, it is not a relational database. Wrong Answer: C Amazon Athena is an interactive query service that makes it easy to analyze data in Amazon S3 using standard SQL.

S10/Q08: Which of the following statements is NOT a feature of AWS Lambda? A. Integration with the whole AWS suite of services B. Virtual functions C. Automated and continuous scaling D. Definition of a minimum and a maximum of EC2 instances running

Correct Answer: D This is a feature of Auto Scaling Groups, not AWS Lambda.