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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Monitoring, Logging, Analysis, Remediation, and Performance Optimization | 22% | - Collect and interpret metrics, logs, and events
|
| Topic 2: Deployment, Provisioning, and Automation | 20% | - Deploy and provision resources consistently
|
| Topic 3: Reliability and Business Continuity | 22% | - Implement backup, restore, and disaster recovery strategies
|
| Topic 4: Security and Compliance | 18% | - Implement identity and access management
|
| Topic 5: Networking and Content Delivery | 18% | - Configure and maintain AWS networking services
|
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NEW QUESTION # 167
A company uses default settings to create an AWS Lambda function. The function needs to access an Amazon RDS database that is in a private subnet of a VPC. The function has the correct IAM permissions to access the database. The private subnet has appropriate routing configurations and is accessible from within the VPC. However, the Lambda function is unable to connect to the RDS instance.
What is the likely reason the Lambda function cannot connect to the RDS instance?
Answer: A
Explanation:
By default, a newly created AWS Lambda function is not attached to a customer VPC. In its default configuration, Lambda runs in an AWS-managed network environment and can reach public internet endpoints, but it does not automatically have network-level connectivity into private subnets within a VPC. Accessing an Amazon RDS instance that is placed in a private subnet requires the Lambda function to be configured for VPC access. This means selecting the target VPC, choosing subnets (typically private subnets with appropriate routing), and associating one or more security groups with the Lambda function's elastic network interfaces (ENIs). Once configured, Lambda creates ENIs in the selected subnets and uses them to communicate with resources such as RDS inside the VPC.
In this scenario, the RDS database is in a private subnet and is reachable from within the VPC, but the Lambda function cannot connect. The most likely cause is that the function was created with default settings and therefore was not deployed into the VPC that contains the database.
IAM permissions are not sufficient for network connectivity; IAM controls authorization to call AWS APIs, while VPC attachment and security groups control the network path.
NEW QUESTION # 168
A CloudOps engineer configured AWS Backup to capture snapshots from a single Amazon EC2 instance that has one Amazon EBS volume attached. On the first snapshot, the EBS volume has
10 GiB of data. On the second snapshot, the EBS volume still contains 10 GiB of data, but 4 GiB have changed. On the third snapshot, 2 GiB of data have been added to the volume, for a total of
12 GiB. How much total storage is required to store these snapshots?
Answer: D
Explanation:
Amazon EBS snapshots are incremental after the first snapshot. The first snapshot stores the full
10 GiB of used data, the second stores only the 4 GiB of changed blocks, and the third stores only the additional 2 GiB of new data. The total snapshot storage required is 16 GiB.
NEW QUESTION # 169
A company is using an Amazon Aurora MySQL DB cluster that has point-in-time recovery, backtracking, and automatic backups enabled. A CloudOps engineer needs to be able to roll back the DB cluster to a specific recovery point within the previous 72 hours. Restores must be completed in the same production DB cluster.
Which solution will meet these requirements?
Answer: D
Explanation:
Comprehensive Explanation (250-350 words):
Amazon Aurora backtracking allows a DB cluster to be rewound to a specific point in time without creating a new DB cluster. This feature is designed for fast recovery from logical errors, such as accidental data changes, within a configured backtrack window. Because backtracking operates directly on the existing cluster, it satisfies the requirement that the restore occur in the same production DB cluster.
Point-in-time recovery (Option D) restores data by creating a new DB cluster, which violates the requirement. Option A involves promoting a replica, which does not allow rolling back to an arbitrary historical point. Option B introduces unnecessary complexity and is not supported for restoring directly into the same cluster.
Backtracking provides near-instant rollback and minimal operational disruption, making it the correct solution.
NEW QUESTION # 170
An environment consists of 100 Amazon EC2 Windows instances. The Amazon CloudWatch agent is deployed and running on all EC2 instances with a baseline configuration file to capture log files. There is a new requirement to capture DHCP log files that exist on 50 of the instances.
What is the MOST operationally efficient way to meet this new requirement?
Answer: D
Explanation:
The CloudWatch agent supports modular configuration using the append-config option, which allows additional log sources to be added without overwriting the existing baseline configuration. This makes it ideal for incremental log collection changes across large fleets.
By creating a separate configuration file specifically for DHCP logs and using Systems Manager Run Command, the CloudOps engineer can remotely update only the relevant instances in a scalable and automated manner. This approach avoids manual login and preserves the existing baseline configuration.
Options B and C require manual intervention on each instance, which is not scalable or operationally efficient.
Option D captures additional logs indiscriminately and does not specifically target DHCP logs, potentially increasing noise and cost.
Therefore, Option A is the most efficient and AWS-recommended approach.
NEW QUESTION # 171
A company has a microservice that runs on a set of Amazon EC2 instances. The EC2 instances run behind an Application Load Balancer (ALB).
A CloudOps engineer must use Amazon Route 53 to create a record that maps the ALB URL to example.com.
Which type of record will meet this requirement?
Answer: A
Explanation:
An alias record is the recommended Route 53 record type to map domain names (e.g., example.com) to AWS- managed resources such as an Application Load Balancer. Alias records are extension types of A or AAAA records that support AWS resources directly, providing automatic DNS integration and no additional query costs.
AWS documentation states:
"Use alias records to map your domain or subdomain to an AWS resource such as an Application Load Balancer, CloudFront distribution, or S3 website endpoint." A and AAAA records are used for static IP addresses, not load balancers. CNAME records cannot be used at the root domain (e.g., example.com). Thus, Option C is correct as it meets CloudOps networking best practices for scalable, managed DNS resolution to ALBs.
References:* AWS Certified CloudOps Engineer - Associate (SOA-C03) Exam Guide - Domain 5:
Networking and Content Delivery* Amazon Route 53 Developer Guide - Alias Records* AWS Well- Architected Framework - Reliability and Performance Efficiency Pillars* Elastic Load Balancing - Integrating with Route 53
NEW QUESTION # 172
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