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NEW QUESTION # 61
A company is using AWS CloudTrail and wants to ensure that SysOps administrators can easily verify that the log files have not been deleted or changed.
Which action should a SysOps administrator take to meet this requirement?
Answer: C
Explanation:
CloudTrail can produce digest files and sign log files to detect tampering. Enabling log file integrity validation ensures that any modification or deletion of delivered log files can be detected by verification against the digests and signatures, providing verifiable evidence of tampering or non-tampering for each log file. This is the standard mechanism used to assure SysOps that logs have not been altered after delivery.
NEW QUESTION # 62
A company runs an application on hundreds of Amazon EC2 instances in three Availability Zones. The application calls a third-party API over the public internet. A CloudOps engineer must provide the third party with a list of static IP addresses so that the third party can allow traffic from the application.
Which solution will meet these requirements?
Answer: A
Explanation:
A NAT gateway uses an Elastic IP address for outbound internet access from private subnets. By creating one NAT gateway in a public subnet in each Availability Zone and routing private subnet outbound traffic through the NAT gateway in the same Availability Zone, the company gets a small, stable list of public source IP addresses to give to the third party. This is also highly available because each Availability Zone has its own NAT gateway path. Option B is impossible because a single Elastic IP address cannot be associated with hundreds of instances simultaneously. Option C is wrong because Network Load Balancers handle inbound traffic distribution, not outbound internet NAT for API calls. Option D is operationally poor and does not provide a scalable centralized static egress pattern.
NEW QUESTION # 63
A company runs custom statistical analysis software on a cluster of Amazon EC2 instances. The software is highly sensitive to network latency between nodes, although network throughput is not a limitation.
Which solution will minimize network latency?
Answer: A
Explanation:
The AWS Cloud Operations and Compute documentation explains that placement groups control how EC2 instances are physically arranged within AWS data centers to optimize network performance.
Among the available placement strategies:
Cluster placement groups place instances physically close together within a single Availability Zone, connected through high-bandwidth, low-latency networking (ideal for tightly coupled, HPC, or distributed workloads).
Spread placement groups distribute instances across distinct racks or Availability Zones for fault tolerance, increasing latency.
Partition placement groups separate instances into partitions for isolation, not latency reduction.
Therefore, to minimize latency for workloads such as computational clusters, the CloudOps engineer should use a cluster placement group. This placement ensures single-digit microsecond latency and enhanced packet rate performance between instances.
Elastic IPs (Option B) do not influence internal networking. Jumbo frames (Option C) can marginally improve throughput but do not reduce propagation latency. Spread placement (Option D) increases distance, worsening latency.
Hence, Option A - using a cluster placement group - delivers the lowest possible network latency and is AWS's best-practice design for HPC-style clusters.
NEW QUESTION # 64
A company runs applications on Amazon EC2 instances. Many of the instances are not patched. The company has a tagging policy. All the instances are tagged with details about the owners, application, and environment.
AWS Systems Manager Agent (SSM Agent) is installed on all the instances.
A SysOps administrator must implement a solution to automatically patch all existing and future instances that have "Prod" in the environment tag. The SysOps administrator plans to create a patch policy in Systems Manager Patch Manager.
Which solution will meet the patching requirements with the LEAST operational overhead?
Answer: B
Explanation:
Comprehensive and Detailed Explanation From Exact Extract of AWS CloudOps Documents:
The correct answer is A because AWS Systems Manager Patch Manager natively supports tag-based targeting, which automatically includes both existing and future instances that match specified tag criteria.
AWS CloudOps documentation states that patch policies can target managed nodes by instance tags, allowing administrators to dynamically scope patching operations without additional automation.
By defining the patch policy target as instances with an environment tag value of "Prod," Patch Manager automatically applies patch baselines to all matching instances. Any new EC2 instance launched with the same tag is included automatically, requiring no manual intervention or additional services. This approach delivers the least operational overhead while remaining fully scalable and compliant.
Options B, C, and D are incorrect because they introduce unnecessary complexity by adding AWS Lambda functions, resource groups, or EventBridge rules. AWS CloudOps best practices emphasize using native Systems Manager capabilities whenever possible to reduce operational burden and failure points.
References:
AWS Systems Manager User Guide - Patch Manager Tag-Based Targeting
AWS SysOps Administrator Study Guide - Automation and Patch Management
AWS Well-Architected Framework - Operational Excellence
NEW QUESTION # 65
A company with millions of subscribers needs to automatically send notifications every Saturday.
The company already uses Amazon SNS to send messages but has historically sent them manually.
Which solution will meet these requirements in the MOST operationally efficient way?
Answer: C
Explanation:
Per the AWS Cloud Operations and Event Management documentation, Amazon EventBridge provides native scheduling capabilities that can trigger events at defined intervals--such as weekly, daily, or cron-based schedules.
Creating an EventBridge rule that runs every Saturday and publishes a message to an SNS topic fully automates the notification process without maintaining servers or manual jobs. This approach is serverless, highly reliable, and fully managed by AWS.
EC2 cron jobs (Option A) require instance management, patching, and cost overhead.
SNS subscriptions (Option C) handle message delivery, not scheduling.
Step Functions (Option D) are designed for complex workflows, not simple scheduled triggers.
Thus, Option B provides the most operationally efficient CloudOps solution by integrating EventBridge scheduled events with SNS topics for automated, recurring notifications.
NEW QUESTION # 66
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