CV0-004 Operations and Support Practice Test 5 — 15 Questions

Question 1

A cloud administrator needs to monitor CPU utilization of a group of EC2 instances and automatically add more instances when utilization exceeds 80% for 5 minutes. Which AWS service should the administrator use to define this scaling policy?

Accepted Answer

AWS Auto Scaling. Auto Scaling groups can use step scaling policies to add instances based on CloudWatch alarms. The scenario describes a step scaling policy triggered by a CloudWatch alarm on CPU utilization.

Answer

AWS Config

Answer

AWS CloudTrail

Answer

AWS Systems Manager

Question 2

A company wants to implement a disaster recovery strategy with an RTO of 15 minutes and an RPO of 1 hour for a critical application running on AWS. Which approach would best meet these requirements?

Accepted Answer

Continuous replication to a warm standby environment with automated failover. Continuous replication to a standby environment with automatic failover provides the lowest RTO and RPO, meeting the requirements.

Answer

Backup to AWS S3 and restore using AWS CloudFormation

Answer

Cross-region replication with a read replica and manual promotion

Answer

Daily snapshots of EBS volumes to another region

Question 3

A cloud engineer is configuring a dashboard to monitor costs across multiple projects. The company uses tags to track costs by project, environment, and team. Which AWS tool allows the engineer to create custom cost and usage reports filtered by tags?

Accepted Answer

AWS Cost Explorer. AWS Cost Explorer allows filtering by tags and creating custom reports for cost analysis.

Answer

AWS Trusted Advisor

Answer

AWS Budgets

Answer

AWS Billing Conductor

Question 4

A cloud administrator is troubleshooting a performance issue where an application occasionally experiences high latency. The application runs on AWS and uses EC2, ELB, and RDS. Which combination of tools would best help trace the request flow and identify the bottleneck?

Accepted Answer

AWS X-Ray and VPC Flow Logs. AWS X-Ray provides end-to-end tracing, and VPC Flow Logs capture network traffic details, together helping pinpoint latency sources.

Answer

AWS Trusted Advisor and AWS Personal Health Dashboard

Answer

Amazon CloudWatch Logs and AWS Shield

Answer

AWS CloudTrail and AWS Config

Question 5

A company wants to be notified when their monthly AWS spending exceeds $10,000. Which AWS service should they use to set up this alert?

Accepted Answer

AWS Budgets. AWS Budgets allows setting cost budget thresholds and sending alerts via email or SNS when spending exceeds the limit.

Answer

AWS Trusted Advisor

Answer

AWS Cost Explorer

Answer

AWS CloudWatch Alarms

Question 6

A cloud administrator needs to apply security patches to a fleet of 50 Linux servers running on AWS without interrupting business hours. Which approach should the administrator use to schedule patching during a maintenance window?

Accepted Answer

Use AWS Systems Manager Patch Manager with a maintenance window. AWS Systems Manager Patch Manager allows defining maintenance windows for automated patching, minimizing disruption.

Answer

Create a Lambda function that stops instances, patches them, and restarts

Answer

Manually SSH into each server and run yum update

Answer

Use AWS Config to apply patch baselines

Question 7

A company is using Azure VMs and wants to centralize logs from multiple applications for security analysis. The logs must be retained for 2 years. Which Azure service should they use?

Accepted Answer

Azure Log Analytics. Azure Log Analytics (now part of Azure Monitor) provides centralized log management and configurable retention up to 2 years (or more with archive).

Answer

Azure Activity Log

Answer

Azure Application Insights

Answer

Azure Storage Analytics

Question 8

A cloud architect is designing a disaster recovery plan for a critical application that requires an RPO of 15 minutes and an RTO of 1 hour. The application runs on GCP Compute Engine with persistent disks. Which backup strategy best meets these requirements?

Accepted Answer

Schedule snapshots every 15 minutes and store in a different region. Snapshot schedules can be as frequent as every 10 minutes, and snapshots can be restored quickly, meeting the RPO and RTO.

Answer

Use gcloud compute instances move to move instances to another region

Answer

Use persistent disk synchronous replication to another zone

Answer

Schedule daily snapshots to a different region

Question 9

A cloud administrator notices that an Auto Scaling group is launching and terminating instances too frequently, causing instability. What should the administrator adjust to reduce this flapping behavior?

Accepted Answer

Increase the cooldown period. Increasing the cooldown period gives instances time to stabilize before additional scaling actions, reducing flapping.

Answer

Disable the cooldown period

Answer

Decrease the cooldown period

Answer

Increase the scale-out threshold

Question 10

A company uses AWS and wants to receive alerts when CPU utilization of an EC2 instance exceeds 90% for 10 minutes. Which AWS service should be used to create this alarm?

Accepted Answer

Amazon CloudWatch Alarms. CloudWatch Alarms monitor metrics and trigger actions based on thresholds and duration.

Answer

AWS CloudTrail

Answer

AWS Config

Answer

AWS Trusted Advisor

Question 11

A cloud engineer needs to implement a solution to automatically scale an application based on the number of messages in an SQS queue. The goal is to keep the queue length short. Which Auto Scaling policy type should the engineer use?

Accepted Answer

Target tracking scaling. Target tracking scaling maintains a target metric value (e.g., queue length), adjusting capacity automatically.

Answer

Step scaling

Answer

Simple scaling

Answer

Scheduled scaling

Question 12

A company uses GCP and wants to ensure that log entries from Compute Engine instances are automatically exported to BigQuery for analysis. The logs must include structured JSON data. Which GCP service should be configured to route logs?

Accepted Answer

Cloud Logging using sinks. Cloud Logging can route logs to BigQuery using sinks. It accepts structured logs in JSON format.

Answer

Cloud Audit Logs

Answer

Cloud Functions

Answer

Cloud Monitoring

Question 13

A cloud administrator is configuring cost management for a multi-account AWS environment. The company wants to allocate costs by department and project. Which TWO steps should the administrator take to achieve this? (Choose two.)

Accepted Answer

Activate cost allocation tags in the Billing console. Tagging resources and enabling cost allocation tags in AWS allow cost breakdown by department and project. AWS Cost Explorer can then filter by these tags.

Answer

Enable AWS Cost Explorer

Answer

Create separate AWS accounts for each department

Answer

Use AWS Budgets to set spending limits

Question 14

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.)

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 15

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