FREE AWS Cloud Essentials Questions and Answers

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What can you do with the AWS Marketplace?

Correct! Wrong!

Explanation:
AWS Marketplace is an online store that allows software vendors to list, market, and sell their software products to AWS customers. AWS Marketplace offers a wide selection of commercial and open-source software products, including machine learning tools, business software, and security solutions, among others. AWS customers can easily discover, purchase, and deploy software products directly from AWS Marketplace, which can help reduce the time and effort required to procure and manage software licenses. Additionally, AWS Marketplace provides flexible pricing options, including hourly, monthly, annual, and multi-year subscriptions, and offers integrated billing and management through the AWS Marketplace Management Portal.

Which AWS database service provides historical information about changes to your application?

Correct! Wrong!

Explanation:
AWS Quantum Ledger Database (QLDB) is a fully managed database service that provides a transparent, immutable, and cryptographically verifiable ledger for applications that need to maintain a complete and verifiable history of their data changes. QLDB uses an append-only journal to record all application data changes and uses cryptographic hashes to ensure the integrity and immutability of the data. QLDB provides a SQL-like API that allows developers to query the ledger and retrieve historical data at any point in time. QLDB is designed for use cases that require an immutable and tamper-proof audit trail, such as financial transactions, supply chain management, and identity and access management.

What is the name of the service that enables server-free code execution?

Correct! Wrong!

Explanation:
AWS Lambda is a serverless computing service that allows you to run code without needing to provision, manage, or scale any servers. With Lambda, you can simply upload your code in a supported language (such as Node.js, Python, Java, or C#), and AWS will take care of deploying and running your code in a scalable and fault-tolerant manner. Lambda automatically provisions the necessary compute resources based on the incoming request volume and scales them up or down as needed. You only pay for the computing time used to execute your code, with no upfront costs or long-term commitments. Lambda is well-suited for a wide range of use cases, including web and mobile backends, data processing, and real-time stream processing.

Which service enables you to lessen the complexity and development time of machine learning (ML)?

Correct! Wrong!

Explanation:
WS SageMaker is a service that can help reduce the development time and complexity of Machine Learning (ML) by providing a fully managed platform to build, train, and deploy ML models at scale. It offers a range of features such as built-in algorithms, pre-built models, automatic model tuning, and managed infrastructure, that can help streamline the ML development process and accelerate time-to-value. Additionally, SageMaker provides an integrated development environment (IDE) for data scientists to develop, debug, and deploy models in a collaborative environment, which can help improve efficiency and productivity.

Which software enables you to control and visualize your AWS costs?

Correct! Wrong!

Explanation:
AWS Cost Explorer is a tool that lets you visualize and manage your AWS costs. It provides an interactive web-based interface that allows you to view your AWS usage and costs across multiple accounts, services, and periods. With Cost Explorer, you can view your cost and usage trends, identify cost drivers, and analyze cost anomalies. Cost Explorer also provides several pre-built reports, such as daily and monthly cost and usage reports, which can help you understand your AWS costs and usage patterns. Additionally, Cost Explorer allows you to create custom reports and dashboards, set up cost alerts, and forecast your AWS costs based on your usage patterns. Cost Explorer is available to all AWS customers at no additional charge.

What can the AWS DynamoDB Accelerator do?

Correct! Wrong!

Explanation:
AWS DynamoDB Accelerator (DAX) is a fully managed, in-memory cache for DynamoDB that can significantly improve the performance of read-intensive workloads. DAX caches the most frequently accessed data from DynamoDB tables and provides low-latency access to this data, which can help reduce the read times of non-relational data and improve application response times. By offloading read traffic from DynamoDB, DAX can also help reduce the workload on DynamoDB tables and improve their overall performance and scalability. DAX is compatible with the DynamoDB API and can be easily integrated into existing DynamoDB applications with minimal code changes.

Which AWS service enables the development of text chatbots?

Correct! Wrong!

Explanation:
Amazon Lex is an AWS service that enables you to build conversational chatbots that can be integrated with messaging platforms, mobile applications, and voice interfaces. Amazon Lex uses natural language understanding (NLU) technology to enable chatbots to understand and interpret user requests, and it can respond with customized and context-aware responses. With Amazon Lex, you can build chatbots that can handle a wide range of use cases, such as customer support, appointment scheduling, and information retrieval. Amazon Lex also provides pre-built integration with other AWS services, such as AWS Lambda, Amazon Connect, and Amazon DynamoDB, which can help you build and deploy chatbots quickly and easily. Additionally, Amazon Lex provides easy-to-use tools to train your chatbot models and test your chatbots before deploying them to production.

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