AWS Quiz - Zaid Khreasat

As a Web Developer, you need to analyze and debug production, distributed applications that have a microservices architecture. Which monitoring AWS service would be most useful for you?

• Amazon CloudWatch

• AWS Config

• AWS X-Ray

• AWS CloudTrail

Answer explanation

Explanation AWS X-Ray helps developers analyze and debug production, distributed applications, such as those built using a microservices architecture. With X-Ray, you can understand how your application and its underlying services are performing to identify and troubleshoot the root cause of performance issues and errors. X-Ray provides an end-to-end view of requests as they travel through your application, and shows a map of your application's underlying components. You can use X-Ray to analyze both applications in development and in production, from simple three-tier applications to complex microservices applications consisting of thousands of services.

As a Cloud Developer, you need to access your AWS resources remotely through the AWS Command Line Interface (CLI). Which authentication method will you use in this case?

• MFA

• User name and password

• SSH key pairs

• Access keys

Answer explanation

Explanation Before you run any commands using the AWS CLI, you need to set your default credentials - access keys.

Your company wants to use AWS Snowmobile to migrate data from on-premises data center to AWS Cloud. What is the storage capacity per Snowmobile?

• 10 PB

• 50 PB

• 100 PB

• 1 EB

Answer explanation

AWS Snowmobile is an Exabyte-scale data transfer service used to move extremely large amounts of data to AWS. You can transfer up to 100PB per Snowmobile, a 45-foot long ruggedized shipping container, pulled by a semi-trailer truck. Snowmobile makes it easy to move massive volumes of data to the cloud, including video libraries, image repositories, or even a complete data center migration. Transferring data with Snowmobile is more secure, fast and cost effective.

Which AWS serverless service can you use to analyze data in Amazon 53 bucket using SQL?

• Amazon QuickSight

• Amazon Aurora

• Amazon Athena

• Amazon Kinesis

Answer explanation

Amazon Athena is an interactive query service that you can use to analyze data in Amazon S3 using ANSI SQL. Athena is serverless, so there's no infrastructure to manage. Athena scales automatically and is simple to use, so you can start analyzing your datasets within seconds.

An e-commerce company using the AWS Cloud has access to a variety of data types, including raw and preprocessed data. They wants to start using this data for its machine learning pipeline, but also wants to make sure the data is highly available and located in a centralized repository. As a Data Engineer, what approach should you recommend to this company?

• They should use Amazon FSx for Lustre to host the data for training.

• They should create a data lake using Amazon 53 as the data storage layer.

• They should use Amazon Elastic Block Store (EBS) volumes to store the data with data backup.

• They should store unstructured data in Amazon DynamoDB and structured data in Amazon RCM

Answer explanation

Amazon Simple Storage Service (S3) is the largest and most performant object storage service for structured and unstructured data and the storage service of choice to build a data lake. With Amazon 53, you can cost-effectively build and scale a data lake of any size in a secure environment where data is protected by 99.999999999% (119s) of durability.

Imagine you are responsible for the architecture of your company's cloud resources and need to support for a new relational database. You plan to run this database using Amazon EC2 instance. Which Amazon EC2 instance type should you use?

• General purpose

• Compute optimized

• Storage optimized

• Memory optimized

Answer explanation

Memory optimized instances are designed to deliver fast performance for workloads that process large data sets in memory.

Compute optimized instances are ideal for compute bound applications that benefit from high performance processors. Instances belonging to this family are well suited for batch processing workloads, media transcoding. high performance web servers. high performance computing (HPC), scientific modeling, dedicated gaming servers and ad server engines, machine learning inference and other compute intensive applications.

General purpose instances provide a balance of compute, memory and networking resources, and can be used for a variety of diverse workloads. These instances are ideal for applications that use these resources in equal proportions such as web servers and code repositories.

Storage optimized instances are designed for workloads that require high, sequential read and write access to very large data sets on local storage. They are optimized to deliver tens of thousands of low-latency, random I/O operations per second (10PS) to applications.

Which of the following best describes Infrastructure as a Service (laaS) model?

• Platforms that allow developers to run their code for short periods on cloud servers.

• Services that hide the complexity of an infrastructure behind a simple interface.

• Services that give you direct control over underlying compute and storage resources.

• Services that provide a service to end users through a public network.

Answer explanation

Infrastructure as a Service, sometimes abbreviated as laaS, contains the basic building blocks for cloud IT and typically provide access to networking features, computers (virtual or on dedicated hardware), and data storage space. Infrastructure as a Service provides you with the highest level of flexibility and management control over your IT resources and is most similar to existing IT resources that many IT departments and developers are familiar with today.

A as Cloud Developer, you need to choose between Amazon EC2 instance stores and Amazon EBS volumes. What is the main difference between these services?

• Instance stores are ephemeral. Amazon EBS volumes are persistent.

• Instance stores are persistent, Amazon EBS volumes are ephemeral.

• Instance stores have a higher latency connecting to EC2 instances. Amazon EBS volumes have a lower latency connecting to EC2 instances.

• Instance stores are only available in SSD options, Amazon EBS volumes are available in SSD and HDD options.

Answer explanation

The instance store is ideal for temporary storage. because the data stored in instance store volumes is not persistent through instance stops, terminations. or hardware failures.

For data you want to retain longer, or if you want to encrypt the data, use Amazon Elastic Block Store (Amazon EBS) volumes instead. EBS volumes preserve their data through instance stops and terminations, can be easily backed up with EBS snapshots, can be removed from one instance and reattached to another, and support full-volume encryption.

Which machine type family should you use for your game servers (AAAM game)?

• Storage Optimized machines

• Memory Optimized machines

• General Purpose machines

• Compute Optimized machines

Answer explanation

Compute optimized instances are ideal for compute bound applications that benefit from high performance processors. Instances belonging to this family are well suited for batch processing workloads, media transcoding, high performance web servers, high performance computing (HPC), scientific modeling, dedicated gaming servers and ad server engines, machine learning inference and other compute intensive applications.

Which AWS service provides recommendations that help you follow AWS best practices?

• Amazon Cloud Watch

• Amazon Guard Duty

• AWS Trusted Advisor

• AWS CloudTrail

Answer explanation

AWS Trusted Advisor provides recommendations that help you follow AWS best practices. Trusted Advisor evaluates your account by using checks. These checks identify ways to optimize your AWS infrastructure, improve security and performance, reduce costs, and monitor service quotas. You can then follow the check recommendations to optimize your services and resources.