Amazon (SAP-C01) Exam Questions And Answers page 80
You have launched an EC2 instance with four (4) 500 GB EBS Provisioned IOPS volumes attached. The EC2 instance is EBS-Optimized and supports 500 Mbps throughput between EC2 and EBS. The four EBS volumes are configured as a single RAID 0 device, and each Provisioned IOPS volume is provisioned with 4,000 IOPS (4,000 16KB reads or writes), for a total of 16,000 random IOPS on the instance. The EC2 instance initially delivers the expected 16,000 IOPS random read and write performance. Sometime later, in order to increase the total random I/O performance of the instance, you add an additional two 500 GB EBS Provisioned IOPS volumes to the RAID. Each volume is provisioned to 4,000 IOPs like the original four, for a total of 24,000 IOPS on the EC2 instance. Monitoring shows that the EC2 instance CPU utilization increased from 50% to 70%, but the total random IOPS measured at the instance level does not increase at all.
What is the problem and a valid solution?
What is the problem and a valid solution?
Designing highly available, cost-efficient, fault-tolerant, scalable systems
Designing enterprise-wide scalable operations on AWS
You have recently joined a startup company building sensors to measure street noise and air quality in urban areas. The company has been running a pilot deployment of around 100 sensors for 3 months each sensor uploads 1KB of sensor data every minute to a backend hosted on AWS.
During the pilot, you measured a peak or 10 IOPS on the database, and you stored an average of 3GB of sensor data per month in the database.
The current deployment consists of a load-balanced auto scaled Ingestion layer using EC2 instances and a PostgreSQL RDS database with 500GB standard storage.
The pilot is considered a success and your CEO has managed to get the attention or some potential investors. The business plan requires a deployment of at least 100K sensors which needs to be supported by the backend. You also need to store sensor data for at least two years to be able to compare year over year Improvements.
To secure funding, you have to make sure that the platform meets these requirements and leaves room for further scaling.
Which setup win meet the requirements?
During the pilot, you measured a peak or 10 IOPS on the database, and you stored an average of 3GB of sensor data per month in the database.
The current deployment consists of a load-balanced auto scaled Ingestion layer using EC2 instances and a PostgreSQL RDS database with 500GB standard storage.
The pilot is considered a success and your CEO has managed to get the attention or some potential investors. The business plan requires a deployment of at least 100K sensors which needs to be supported by the backend. You also need to store sensor data for at least two years to be able to compare year over year Improvements.
To secure funding, you have to make sure that the platform meets these requirements and leaves room for further scaling.
Which setup win meet the requirements?
Designing highly available, cost-efficient, fault-tolerant, scalable systems
Designing enterprise-wide scalable operations on AWS
You have set up a huge amount of network infrastructure in AWS and you now need to think about monitoring all of this. You decide CloudWatch will best fit your needs but you are unsure of the pricing structure and the limitations of CloudWatch.
Which of the following statements is TRUE in relation to the limitations of CloudWatch?
Which of the following statements is TRUE in relation to the limitations of CloudWatch?
Designing highly available, cost-efficient, fault-tolerant, scalable systems
Implementing cost control strategies
You have setup an Auto Scaling group. The cool down period for the Auto Scaling group is 7 minutes. The first scaling activity request for the Auto Scaling group is to launch two instances. It receives the activity question at time "t", and the first instance is launched at t+3 minutes, while the second instance is launched at t+4 minutes.
How many minutes after time "t" will Auto Scaling accept another scaling activity request?
How many minutes after time "t" will Auto Scaling accept another scaling activity request?
Designing highly available, cost-efficient, fault-tolerant, scalable systems
You have set up Auto Scaling to automatically scale in. Consequently, you must decide which instances Auto Scaling should end first.
What should you use to configure this?
What should you use to configure this?
Designing highly available, cost-efficient, fault-tolerant, scalable systems
You have subscribed to the AWS Business and Enterprise support plan.
Your business has a backlog of problems, and you need about 20 of your IAM users to open technical support cases.
How many users can open technical support cases under the AWS Business and Enterprise support plan?
Your business has a backlog of problems, and you need about 20 of your IAM users to open technical support cases.
How many users can open technical support cases under the AWS Business and Enterprise support plan?
Designing highly available, cost-efficient, fault-tolerant, scalable systems
You have written a CloudFormation template that creates 1 Elastic Load Balancer fronting 2 EC2 Instances.
Which section of the template should you edit so that the DNS of the load balancer is returned upon creation of the stack?
Which section of the template should you edit so that the DNS of the load balancer is returned upon creation of the stack?
Designing highly available, cost-efficient, fault-tolerant, scalable systems
Designing for security and compliance
You must architect the migration of a web application to AWS. The application consists of Linux web servers running a custom web server. You are required to save the logs generated from the application to a durable location.
What options could you select to migrate the application to AWS? (Choose two.)
What options could you select to migrate the application to AWS? (Choose two.)
Designing highly available, cost-efficient, fault-tolerant, scalable systems
Designing enterprise-wide scalable operations on AWS
You need a persistent and durable storage to trace call activity of an IVR (Interactive Voice Response) system. Call duration is mostly in the 2-3 minutes timeframe. Each traced call can be either active or terminated. An external application needs to know each minute the list of currently active calls. Usually there are a few calls/second, but once per month there is a periodic peak up to 1000 calls/second for a few hours. The system is open 24/7 and any downtime should be avoided. Historical data is periodically archived to files. Cost saving is a priority for this project.
What database implementation would better fit this scenario, keeping costs as low as possible?
What database implementation would better fit this scenario, keeping costs as low as possible?
Designing highly available, cost-efficient, fault-tolerant, scalable systems
Designing enterprise-wide scalable operations on AWS
You need to develop and run some new applications on AWS and you know that Elastic Beanstalk and CloudFormation can both help as a deployment mechanism for a broad range of AWS resources.
Which of the following is TRUE statements when describing the differences between Elastic Beanstalk and CloudFormation?
Which of the following is TRUE statements when describing the differences between Elastic Beanstalk and CloudFormation?
Designing highly available, cost-efficient, fault-tolerant, scalable systems
Designing enterprise-wide scalable operations on AWS
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