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NEW QUESTION # 163
A SysOps administrator is configuring an Auto Scaling group of Amazon EC2 instances for an application.
The average CPU utilization of the instances in the Auto Scaling group must remain at approximately 40% when the load on the application changes.
Which solution will meet this requirement in the MOST operationally efficient manner?
Answer: A
Explanation:
Comprehensive and Detailed Explanation From Exact Extract of AWS CloudOps Documents:
The correct answer is D because target tracking scaling policies are designed to automatically maintain a specific metric at a desired target value with the least administrative effort. AWS CloudOps documentation states that target tracking works like a thermostat, continuously adjusting capacity to keep the selected metric close to the defined target.
By specifying a target value of 40% average CPU utilization, the Auto Scaling group automatically scales out or in based on real-time demand without requiring manual thresholds, multiple alarms, or predefined scaling steps. This approach is fully managed by AWS and is the most operationally efficient option.
Option A is incorrect because scheduled scaling is based on predictable traffic patterns and cannot respond dynamically to real-time load changes. Option B is incorrect because simple scaling reacts only after an alarm is triggered and does not continuously maintain a target value. Option C is less efficient because step scaling requires additional configuration and tuning of scaling steps.
AWS CloudOps best practices clearly recommend target tracking scaling policies for maintaining steady performance metrics with minimal operational overhead.
References:
Amazon EC2 Auto Scaling User Guide - Target Tracking Policies
AWS SysOps Administrator Study Guide - Auto Scaling and Automation
AWS Well-Architected Framework - Operational Excellence and Performance Efficiency
NEW QUESTION # 164
A company's CloudOps engineer maintains a highly available environment. The environment includes Amazon EC2 instances and an Amazon RDS Multi-AZ database. The EC2 instances are in an Auto Scaling group behind an Application Load Balancer.
Recently, the company conducted a failover test. The CloudOps engineer needs to decrease the failover time of the RDS database by at least 10%.
Which solution will meet this requirement?
Answer: C
Explanation:
Amazon RDS Proxy improves application resiliency during database failovers by pooling and managing database connections. During failover, applications that connect through RDS Proxy generally recover faster because the proxy reduces the need for clients to repeatedly establish new database connections and handle DNS/cache timing issues directly. Increasing the DB instance size might improve capacity, but it does not directly reduce failover duration. Moving to a single Availability Zone would reduce availability and is the opposite of the requirement. A cross-Region read replica is useful for disaster recovery, but manual promotion is slower and changes the recovery model. The question asks to reduce failover time for the existing highly available RDS environment, so using RDS Proxy and updating the application endpoint is the best operational choice.
NEW QUESTION # 165
A company must receive an email notification immediately when new Amazon EC2 instances launch in the company's main AWS production account. Which solution will meet this requirement?
Answer: C
Explanation:
Amazon EventBridge can detect EC2 instance launch events in near real time and route those events directly to an Amazon SNS topic. An email subscription to the SNS topic then sends the notification immediately to the company's specified email address with minimal operational overhead.
NEW QUESTION # 166
A company has a web application that is experiencing performance problems many times each night. A root cause analysis reveals sudden increases in CPU utilization that last 5 minutes on an Amazon EC2 Linux instance. A CloudOps engineer must find the process ID (PID) of the service or process that is consuming more CPU.
What should the CloudOps engineer do to collect the process utilization information with the LEAST amount of effort?
Answer: B
Explanation:
The CloudWatch agent procstat plugin is specifically designed to collect per-process metrics such as CPU usage by process ID. It allows continuous, automated monitoring without manual intervention and integrates directly with CloudWatch.
Default CloudWatch metrics provide only instance-level CPU utilization and do not expose process-level details. Manual logins and Lambda-based polling introduce unnecessary operational overhead and are not scalable.
Therefore, configuring the procstat plugin is the most efficient solution.
NEW QUESTION # 167
A company is running an application on premises and wants to use AWS for data backup. All of the data must be available locally. The backup application can write only to block-based storage that is compatible with the Portable Operating System Interface (POSIX).
Which backup solution will meet these requirements?
Answer: B
Explanation:
The Storage Gateway service enables hybrid cloud backup by presenting local block storage that synchronizes with AWS cloud storage. For scenarios where all data must remain available locally while still backed up to AWS, the correct mode is gateway-stored volumes.
AWS documentation defines:
"Use stored volumes if you want to keep all your data locally while asynchronously backing up point-in-time snapshots to Amazon S3 for durable storage." These volumes expose an iSCSI interface compatible with POSIX file systems, allowing direct use by on-premises backup software.
Gateway-cached volumes (Option C) store primary data in AWS with limited local cache, violating the "all data must be available locally" requirement. Options A and B are object-based storage solutions, not compatible with POSIX or block-based backup applications.
Therefore, Option D fully satisfies CloudOps reliability and continuity best practices by ensuring local availability, cloud durability, and POSIX compatibility for backups.
References (AWS CloudOps Documents / Study Guide):
* AWS Certified CloudOps Engineer - Associate (SOA-C03) Exam Guide - Domain 2: Reliability and Business Continuity
* AWS Storage Gateway User Guide - Stored Volumes Overview
* AWS Well-Architected Framework - Reliability Pillar
* AWS Hybrid Cloud Storage Best Practices
NEW QUESTION # 168
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