Your IT group maintains an application on AWS to provide development and testing platforms for your developers. Currently each environment consists of an m1.small EC2 instance. Your developers report to your group performance degradation as they increase network load in the test environment. How would you mitigate these performance issues in the test environment?

Your IT group maintains an application on AWS to provide development and testing platforms for your developers. Currently each environment consists of an m1.small EC2 instance. Your developers report to your group performance degradation as they increase network load in the test environment. How would you mitigate these performance issues in the test environment?

• Upgrade the m1.small to a larger instance type.
• Add an additional ENI to the test instance.
• Use the EBS optimized option to offload EBS traffic.
• Configure Amazon CloudWatch to provision more network bandwidth when network utilization exceeds 80 percent.

Explanation

Note that the EBS optimized option is not available for this EC2 instance.

An Amazon EBS-optimized instance uses an optimized configuration stack and provides additional, dedicated capacity for Amazon EBS I/O. This optimization provides the best performance for your EBS volumes by minimizing contention between Amazon EBS I/O and other traffic from your instance

Source

https://docs.aws.amazon.com/prescriptive-guidance/latest/sql-server-ec2-best-practices/ebs-optimize.html

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You have a customer expecting massive IOPS needs (15,000 IOPS) in a critical business application. What type of storage should you consider?

 You have a customer expecting massive IOPS needs (15,000 IOPS) in a critical business application. What type of storage should you consider?

• SSD
• Provisioned IOPS
• Turbo IOPS
• Optimized networking

Explanation

Provisioned IOPS can support up to 20,000 IOPS.

Provisioned IOPS volumes, backed by solid-state drives (SSDs), are the highest performance Elastic Block Store (EBS) storage volumes designed for your critical, IOPS-intensive and throughput-intensive workloads that require low latency.

Source 

https://aws.amazon.com/ebs/provisioned-iops/#:~:text=Provisioned%20IOPS%20volumes%2C%20backed%20by,workloads%20that%20require%20low%20latency

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Your company maintains part of its services in a local data center and part in the AWS cloud. Which of the following cloud types best describes your company’s cloud implementation?

Your company maintains part of its services in a local data center and part in the AWS cloud. Which of the following cloud types best describes your company’s cloud implementation?

• Private
• Hybrid
• Public
• Community 

Explanation

A hybrid cloud is a cloud computing environment that uses a mix of on-premises, private cloud and third-party, public cloud services, with orchestration between the two platforms.

AWS Storage Gateway is a set of hybrid cloud storage services that provide on-premises applications with access to virtually unlimited cloud storage.

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Your engineer is concerned about high CPU utilization on several of your EC2 instances. What service should you use to monitor this?

Your engineer is concerned about high CPU utilization on several of your EC2 instances. What service should you use to monitor this?

• Service Catalog
• CloudWatch
• Trusted Advisor
• Config

Explanation

CloudWatch is the primary monitoring tool in AWS.

Amazon CloudWatch monitors your Amazon Web Services (AWS) resources and the applications you run on AWS in real time. You can use CloudWatch to collect and track metrics, which are variables you can measure for your resources and applications.

CloudWatch enables you to monitor your complete stack (applications, infrastructure, network, and services) and use alarms, logs, and events data to take automated actions and reduce mean time to resolution (MTTR). This frees up important resources and allows you to focus on building applications and business value.

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____ is the type of billing used in for AWS?

 ____ is the type of billing used in for AWS?

• Pay-as-you-terminate
• Pay-for-reservations
• Pay-as-you-go
• Pay-as-you-estimate

Explanation

AWS uses a pay-as-you-go pricing model.

AWS offers you a pay-as-you-go approach for pricing for the vast majority of our cloud services. With AWS you pay only for the individual services you need, for as long as you use them, and without requiring long-term contracts or complex licensing.

There are three fundamental drivers of cost with AWS: compute, storage, and outbound data transfer.

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Which would not be considered a major benefit of IaaS?

Which would not be considered a major benefit of IaaS?

• Eliminating security concerns
• Reducing CapEx
• Increasing speed and agility
• Leveraging AWS expertise

Explanation

Even when you engage in Infrastructure as a Service (IaaS)with AWS, you are still responsible for aspects of securing the infrastructure.

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What is the default duration of time that CloudFront will keep files at Edge Locations?

What is the default duration of time that CloudFront will keep files at Edge Locations?

• 6 hours
• 12 hours
• 24 hours
• 48 hours

Explanation

By default, if no cache control header is set, each Edge Location checks for an updated version of your file whenever it receives a request more than 24 hours after the previous time it checked the origin for changes to that file. This is called the “expiration period.” You can set this expiration period to be as short as 0 seconds or as long as you’d like by setting the cache control headers on your files in your origin. Amazon CloudFront uses these cache control headers to determine how frequently it needs to check the origin for an updated version of the file. For an expiration period set to 0 seconds, Amazon CloudFront will revalidate every request with the origin server. If your files don’t change very often, it is best practice to set a long expiration period and implement a versioning system to manage updates to your files.

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