CV0-004 Operations and Support Practice Test 6 — 15 Questions

Question 1

A cloud engineer is planning a disaster recovery drill for a critical application that spans multiple availability zones. The drill must validate RTO and RPO without affecting production. Which THREE actions should the engineer include? (Choose three.)

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Perform a failover to the secondary environment using production data. Performing a failover in a non-production environment validates recovery steps. Monitoring recovery time measures RTO, and verifying data integrity checks RPO.

Answer

Terminate production instances to simulate a disaster

Answer

Delete all backups to ensure they are not used during the drill

Question 2

A company uses AWS CloudFormation to manage infrastructure. The operations team needs to be alerted when a stack update fails. Which TWO methods can be used to send notifications? (Choose two.)

Accepted Answer

Configure CloudFormation to send events to an SNS topic. CloudFormation can use SNS topics for stack events. CloudWatch Events (now Amazon EventBridge) can also match stack update failures and trigger notifications.

Answer

Use AWS Trusted Advisor to monitor CloudFormation

Answer

Enable CloudTrail to log stack updates and send logs to CloudWatch Logs

Answer

Use AWS Config to detect stack failures

Question 3

A cloud architect needs to monitor CPU utilization across a fleet of EC2 instances and receive an alert when the average CPU exceeds 80% for 10 minutes. Which AWS service should be used to collect the metric and trigger the alert?

Accepted Answer

Amazon CloudWatch. CloudWatch collects metrics and can trigger alarms based on thresholds.

Answer

AWS Systems Manager

Answer

AWS Config

Answer

AWS CloudTrail

Question 4

A company wants to track cloud spending by department and project. Which strategy should be implemented to enable cost attribution?

Accepted Answer

Implement a resource tagging strategy. Resource tagging allows filtering and grouping costs by tags like department or project.

Answer

Use a single account for all workloads

Answer

Enable detailed billing reports

Answer

Use AWS Organizations only

Question 5

A cloud operations team is configuring auto-scaling for a web application. They want to add two instances when CPU utilization exceeds 80% for five minutes, and remove one instance when CPU drops below 30% for five minutes. Which type of scaling policy should they use?

Accepted Answer

Step scaling. Step scaling allows adding or removing a specific number of instances based on the size of the alarm breach.

Answer

Simple scaling

Answer

Scheduled scaling

Answer

Target tracking scaling

Question 6

A cloud administrator needs to centralize logs from multiple AWS services, including VPC flow logs and application logs, to enable searching and querying. Which solution should be used?

Accepted Answer

Amazon CloudWatch Logs. CloudWatch Logs is the central log service that can collect logs from various sources and allow querying with Logs Insights.

Answer

AWS CloudTrail

Answer

Amazon S3 with Athena

Answer

AWS Config

Question 7

An organization wants to automate patching of their EC2 instances running Windows Server. They need to schedule patching during a maintenance window and ensure minimal downtime. Which AWS service should they use?

Accepted Answer

AWS Systems Manager Patch Manager. AWS Systems Manager Patch Manager automates patching and can be scheduled via maintenance windows.

Answer

AWS OpsWorks

Answer

Amazon Inspector

Answer

AWS CloudFormation

Question 8

A company is planning its disaster recovery strategy for a critical application. The application runs on EC2 with data in EBS volumes. The RTO is 2 hours and RPO is 15 minutes. Which approach meets these requirements most cost-effectively?

Accepted Answer

Cross-region continuous replication of EBS volumes. Continuous replication to another region achieves a low RPO (minutes) and can be failed over quickly to meet RTO.

Answer

Hourly AMI backups to the same region

Answer

Pilot light with replication every 30 minutes

Answer

Daily snapshots to the same region

Question 9

A cloud engineer needs to troubleshoot network connectivity issues between two subnets. Which feature can help capture and analyze network traffic metadata?

Accepted Answer

VPC Flow Logs. VPC Flow Logs capture IP traffic metadata for analysis.

Answer

Amazon Inspector

Answer

AWS Config

Answer

AWS CloudTrail

Question 10

A company uses Azure and wants to set up an alert that triggers when the average CPU of a virtual machine exceeds 90% for the past 15 minutes. The alert should send an email to the operations team. Which Azure resources are needed?

Accepted Answer

Azure Monitor metric alert and action group with email. Azure Monitor alerts evaluate metrics and trigger actions like sending emails via action groups.

Answer

Azure Log Analytics and Logic App

Answer

Azure Advisor recommendation

Answer

Azure Service Health alert

Question 11

A cloud operations team wants to analyze application performance and identify slow database queries. They need a distributed tracing solution. Which service should they use?

Accepted Answer

AWS X-Ray. AWS X-Ray provides distributed tracing to trace requests through applications and identify performance bottlenecks.

Answer

Amazon Inspector

Answer

AWS CloudTrail

Answer

Amazon CloudWatch Logs Insights

Question 12

An organization wants to receive notifications in a Slack channel when a new VM instance is created. Which combination of cloud services should be used?

Accepted Answer

Logging service log-based metric and event-driven function with webhook. A logging service can trigger an event-driven function via a log-based metric when a VM is created, and the function sends a message to Slack via webhook.

Answer

Monitoring alert policy with Slack notification channel

Answer

Scheduler and event-driven function

Answer

Pub/sub messaging service and container service

Question 13

A cloud administrator is configuring auto-scaling for a batch processing application that uses an SQS queue. The number of jobs varies unpredictably. Which metric is most appropriate for scaling the worker instances?

Accepted Answer

SQS queue depth (ApproximateNumberOfMessages). SQS queue depth (approximate number of messages) directly indicates the backlog of work and is a common metric for scaling workers.

Answer

Memory utilization of workers

Answer

Network throughput

Answer

CPU utilization of workers

Question 14

A company wants to reduce cloud costs by identifying underutilized EC2 instances. Which AWS service provides rightsizing recommendations?

Accepted Answer

AWS Compute Optimizer. AWS Compute Optimizer analyzes utilization and recommends instance type changes to save costs.

Answer

AWS Budgets

Answer

AWS Trusted Advisor

Answer

AWS Cost Explorer

Question 15

A cloud operations team is designing a disaster recovery plan that includes regular testing. Which TWO activities should be part of the DR testing process? (Select TWO.)

Accepted Answer

Chaos engineering experiments. Scheduled drills validate the plan, and chaos engineering tests resilience.

Answer

Updating security patches

Answer

Reviewing billing reports

Answer

Performing daily backups