Cost and Performance Optimization

A SysOps administrator manages an Amazon RDS for MySQL instance that experiences high CPU utilization during business hours. The application is read-heavy. Which action will most effectively improve performance and reduce cost?

A SysOps administrator manages a web application running on Amazon EC2 instances that run 24/7 for the next 12 months. The workload is steady and predictable. Which EC2 purchasing option provides the highest cost savings for this use case?

A company runs a large number of EC2 instances across multiple accounts and regions. The finance team needs to track costs per project and department. Each EC2 instance must be tagged with a ProjectID and Department tag. A SysOps administrator needs to ensure that all newly launched EC2 instances are tagged automatically before they can be used, and that existing untagged instances are retroactively tagged. The tags must be propagated to cost reports in AWS Cost Explorer. Which combination of steps will achieve this with the least operational overhead?

A company runs a batch processing application on Amazon EC2 that runs for 2 hours every night. The workload can tolerate interruptions. Which EC2 purchasing option provides the lowest cost for this use case?

A company runs a web application on Amazon EC2 instances behind an Application Load Balancer (ALB). The application reads data from an Amazon RDS for MySQL database. During peak hours, the database CPU utilization is consistently high, and the application experiences increased latency. The SysOps administrator observes that 90% of database queries are read-only. Which combination of actions will both improve performance and optimize costs?

A company runs a web application on Amazon EC2 instances that are part of an Auto Scaling group. The application's traffic is predictable with regular peaks during business hours and low traffic at night. The SysOps administrator wants to optimize costs while ensuring that performance meets demand. The administrator also needs to minimize manual intervention. Which scaling policy should be used?

A company stores large volumes of log data in Amazon S3. The logs are accessed frequently for the first 30 days, then occasionally for the next 60 days, and after 90 days they are rarely accessed but must be retained for 7 years for compliance. The SysOps administrator wants to minimize storage costs while ensuring data is available when needed. Which S3 lifecycle policy configuration should be applied?

A company runs a read-heavy database workload on Amazon RDS for PostgreSQL with a primary instance and two read replicas. The SysOps administrator observes that the read replicas frequently experience high replica lag during peak hours, causing stale reads for the application. The administrator needs to reduce replica lag while optimizing costs. The workload is predictable, with spikes during business hours and low traffic at night. Which combination of actions should the administrator take?

A company runs a mix of Amazon EC2 instances and AWS Fargate tasks that are used for both production and development workloads. The usage is steady and predictable. The SysOps administrator wants to maximize cost savings across both compute services without having to manage specific instances or sizes. Which purchasing option should the administrator recommend?

A company runs a web application on Amazon EC2 instances in an Auto Scaling group. The application experiences steady traffic during business hours and very low traffic overnight. The SysOps administrator wants to optimize costs by using a mix of On-Demand and Spot Instances. The administrator also requires that the total capacity never falls below the baseline level needed during business hours, even if Spot Instances are reclaimed. Which combination of Auto Scaling features should be used?

A company runs a batch processing job on Amazon EC2 that runs for 2 hours every night. The job can tolerate interruptions and can resume from the last checkpoint. The SysOps administrator needs to minimize compute costs. Which EC2 purchasing option should be used?

A SysOps administrator wants to identify Amazon EC2 instances that are underutilized to reduce costs. The administrator needs recommendations for rightsizing instances based on historical CPU and memory usage. Which AWS service provides these recommendations?

A company wants to receive an alert when its AWS spending exceeds $5,000 in a month. The SysOps administrator needs to set up a proactive alert that monitors actual costs. Which AWS service should be used?

A company uses Amazon S3 to serve large files to users. The files are accessed frequently for the first 30 days after upload, then access drops significantly. The SysOps administrator wants to minimize storage costs while ensuring low-latency access for frequently accessed files and automatic optimization for changing access patterns. Which S3 storage class configuration should be used?

A company runs a batch processing job on Amazon EC2 instances that runs for 3 hours each night. The job can be interrupted and can resume from the last checkpoint without data loss. The SysOps administrator wants to minimize compute costs for this workload. Which Amazon EC2 purchasing option should be used?

A company uses Amazon S3 to store large files that are frequently accessed for the first 30 days after upload. After 30 days, access frequency drops significantly but users still need retrieval within minutes. The SysOps administrator wants to minimize storage costs while ensuring low-latency access for frequently accessed files and automatic optimization for changing access patterns. Which S3 storage class configuration should the company use?

A SysOps administrator manages a fleet of Amazon EC2 instances. The administrator needs to identify underutilized instances and receive recommendations for instance type changes to reduce costs. Which AWS service should be used to provide these rightsizing recommendations?

A company stores video files in Amazon S3. The files are accessed frequently for the first week, then weekly for the next month, and then rarely after that. The files must be retained for 5 years and any access must be served within minutes. The SysOps administrator needs to minimize storage costs while meeting these requirements. Which lifecycle policy configuration is the most cost-effective?

A company runs a mix of Amazon EC2 instances, Amazon RDS databases, and AWS Lambda functions for production workloads. The workloads are steady-state and predictable. The SysOps administrator wants to reduce costs while maintaining flexibility to change instance families and regions. Which pricing model should be recommended?

A company stores application logs in Amazon S3. The logs are rarely accessed after the first 30 days, but must be retained for 7 years for compliance. The SysOps administrator wants to minimize storage costs while ensuring logs are available for retrieval within 12 hours if needed. Which S3 lifecycle configuration is the most cost-effective?

A company stores video files in Amazon S3. Files are accessed frequently for the first 30 days, then weekly for the next 6 months, and then rarely after that. Files must be retained for 5 years and any access must be served within minutes. The SysOps administrator wants to minimize storage costs. Which lifecycle policy is most cost-effective?

A company runs a web application on Amazon EC2 instances. The application's traffic pattern is unpredictable, often spiking to 3x normal load for short periods. The SysOps administrator needs to ensure that the application can handle spikes without performance degradation while minimizing costs. Which combination of purchasing options and scaling strategies should the administrator use?

A company runs a web application on Amazon EC2 instances that have variable traffic patterns. The application experiences steady baseline traffic with occasional spikes. The SysOps administrator wants to optimize costs while ensuring performance during spikes. Which pricing model should be used for the baseline capacity and for the burst capacity?

A company runs a batch processing job every night on Amazon EC2 instances. The job takes exactly 2 hours to complete and can be interrupted and resumed later. The SysOps administrator wants to minimize compute costs. Which purchasing option should be used?

A SysOps administrator wants to identify underutilized Amazon EC2 instances that could be downsized to reduce costs. The administrator needs a tool that provides recommendations based on historical utilization data. Which AWS service should the administrator use?

A company runs an e-commerce application on Amazon EC2 instances behind an Auto Scaling group. The application has a predictable baseline load from 8 AM to 8 PM daily and low load overnight. The SysOps administrator wants to optimize costs while ensuring sufficient capacity for the baseline load. Which purchasing option and scaling strategy should the administrator use?

A SysOps administrator notices that an Amazon RDS DB instance is running at 10% CPU utilization consistently. The instance has 8 vCPUs and 32 GB RAM. The application's performance is adequate. Which action will reduce costs without affecting performance?

A company runs a stateless web application on Amazon EC2 instances behind an Application Load Balancer. The application usage is consistent throughout the day and is expected to grow steadily over the next year. The SysOps administrator wants to minimize compute costs while ensuring capacity is available. Which purchasing option should the administrator use for the EC2 instances?

A company runs a batch processing application on Amazon EC2 instances. The application runs for 3 hours every night and can tolerate interruptions. The SysOps administrator needs to minimize compute costs. Which purchasing option should the administrator use?

A company runs a web application on Amazon EC2 instances that run 24/7. The application has a predictable and steady load. The SysOps administrator wants to minimize compute costs while ensuring the required capacity is always available. Which purchasing option should be used?

A company stores application log files in an Amazon S3 bucket. The logs are accessed frequently for the first 30 days, then rarely accessed but must be retrievable within 12 hours. After 1 year, the logs must be archived for compliance with a retention period of 5 years, during which retrievals are expected to be extremely rare (one or two per year) and retrieval time of 12 hours is acceptable. The SysOps administrator wants to minimize storage costs. Which S3 lifecycle policy configuration should be used?

A company runs a CPU-intensive batch processing job daily on a single Amazon EC2 instance. The job requires high compute performance but uses minimal memory. The instance is typically idle for the rest of the day. The SysOps administrator needs to minimize costs while ensuring the job completes within a 1-hour window. Which purchasing option and instance family should the administrator use?

A company runs a web application on Amazon EC2 instances in an Auto Scaling group. The application uses Amazon EBS volumes (gp2) for data storage. The SysOps administrator notices that the storage costs are high, and the application's IOPS requirements are consistently below 3000. The administrator wants to reduce storage costs without affecting performance. Which action should the administrator take?

A company runs a batch processing job every night that takes exactly 2 hours to complete. The job is time-sensitive and cannot tolerate interruptions. The SysOps administrator needs to minimize compute costs for the Amazon EC2 instances used during this job. The job runs every day and has predictable resource requirements. Which purchasing option should the administrator choose?

A company runs a web application on a fleet of Amazon EC2 instances. The application uses Amazon EBS volumes of type gp2 (General Purpose SSD). Each volume is 100 GB, which provides a baseline of 3000 IOPS (the minimum performance of gp2). The SysOps administrator monitors the volumes and finds that the average IOPS used is only 1,500, and the application performance is adequate. The administrator wants to reduce storage costs without affecting performance. Which action should the administrator take?

A company runs a web application on a fleet of Amazon EC2 instances that operate 24/7 with a steady and predictable load. The SysOps administrator wants to minimize compute costs while ensuring the required capacity is always available. Which EC2 purchasing option should the administrator use?

A company has an Amazon DynamoDB table that stores historical data. The table is accessed infrequently but when queried requires consistent single-digit millisecond latency. The SysOps administrator wants to minimize storage costs while maintaining the required performance. Which DynamoDB table class should the administrator use?

A company uses Amazon CloudFront to deliver content to a global audience. The origin is an Application Load Balancer in us-east-1. The SysOps administrator wants to reduce costs by minimizing the number of requests that reach the origin server. Which action should the administrator take?

A company runs a development Amazon EC2 instance that is only used during business hours (9 AM to 5 PM). The SysOps administrator wants to reduce compute costs. Which action should be taken?

A company runs a batch processing application on Amazon EC2 instances every night. The job takes exactly 1 hour to complete and is time-sensitive. The SysOps administrator wants to minimize compute costs while ensuring the job can be interrupted and resumed if needed. Which EC2 purchasing option is most cost-effective?

A company uses an Amazon DynamoDB table with on-demand capacity mode for a variable workload. The SysOps administrator notices high costs and wants to reduce them without affecting application performance. Which action should the administrator take?

A company runs a production Amazon DynamoDB table with provisioned capacity of 1000 write capacity units (WCU). The table experiences unpredictable spikes up to 2000 WCU, causing throttling. The SysOps administrator wants to minimize cost while handling the spikes. Which solution should be used?

A company uses an Amazon DynamoDB table with provisioned capacity. The average write usage is 500 write capacity units (WCU) but regularly spikes to 2,000 WCU during business hours. The SysOps administrator wants to reduce costs without affecting performance during the spikes. Which solution should the administrator implement?

A company runs a batch processing application on Amazon EC2 instances that runs every night for 2 hours. The job can be interrupted and resumed without any issue. The SysOps administrator wants to minimize compute costs for this workload. Which EC2 purchasing option should be used?

A company runs a production web application on a single Amazon EC2 instance. The application experiences a predictable and steady workload 24/7. The SysOps administrator wants to minimize compute costs for this instance while ensuring it remains available during the expected workload. Which EC2 purchasing option should the administrator use?

A company runs a batch processing job every Saturday for 3 hours. The job can be interrupted and resumed at any point. The SysOps administrator wants to minimize compute costs for this workload. Which EC2 purchasing option should the administrator use?

A company uses an Amazon DynamoDB table with on-demand capacity mode. The table handles a workload with a steady baseline of 500 writes per second but spikes to 2,000 writes per second for a few hours each day. The SysOps administrator wants to reduce costs without affecting application performance during spikes. Which action should the administrator take?

A company uses multiple AWS accounts and needs to generate a detailed cost and usage report that can be queried using Amazon Athena for custom analysis. Which AWS service should the administrator enable?

A SysOps administrator notices that some Amazon S3 objects have not been accessed for over 90 days and need to be retained for compliance purposes. The administrator wants to reduce storage costs by moving these objects to the lowest-cost storage class. Which action should the administrator take?

A company runs a web application on a fleet of Amazon EC2 instances behind an Application Load Balancer. The application has predictable traffic patterns with high traffic during business hours and low traffic at night. The SysOps administrator wants to reduce compute costs while ensuring the application remains responsive during peak hours. The administrator has already implemented Auto Scaling based on CPU utilization. Which additional action should the administrator take to optimize costs?

An EC2 Auto Scaling group runs a stateless web application with predictable daily peaks. Which two actions can reduce cost while preserving capacity during peak periods? (Choose 2.)