CV0-004 Operations and Support — 20 Questions

Question 1

A cloud architect is designing a monitoring solution for a web application. Which service should they use to collect and visualize metrics such as CPU utilization and network throughput?

Accepted Answer

AWS CloudWatch. AWS CloudWatch is the service for collecting and visualizing metrics on AWS.

Answer

AWS CloudTrail

Answer

AWS Config

Answer

AWS Trusted Advisor

Question 2

A company wants to receive alerts when their cloud costs exceed a budget threshold. Which cost management feature should they use?

Accepted Answer

Cost anomaly detection alerts. Cost anomaly detection alerts notify when spending exceeds defined thresholds.

Answer

Rightsizing recommendations

Answer

Reserved Instance planning

Answer

Tagging strategy

Question 3

A cloud administrator is configuring automated scaling for a web application. The scaling policy should add two instances when CPU utilization exceeds 80% for five minutes. Which type of scaling policy should they implement?

Accepted Answer

Step scaling. Step scaling allows adding a specific number of instances based on a metric threshold breach.

Answer

Scheduled scaling

Answer

Dynamic scaling

Answer

Target tracking scaling

Question 4

A systems administrator notices that an application is slow to respond. They want to analyze the latency of individual requests across microservices. Which tool should they use?

Accepted Answer

AWS X-Ray. Distributed tracing tools like AWS X-Ray help identify latency across services.

Answer

CloudWatch Logs

Answer

VPC Flow Logs

Answer

AWS CloudTrail

Question 5

A company uses multiple AWS accounts. The cloud team wants to allocate costs to specific business units. What should they implement?

Accepted Answer

Tagging strategy. A tagging strategy with tags like environment, team, and project enables cost allocation.

Answer

Cost Explorer

Answer

AWS Budgets

Answer

AWS Organizations

Question 6

A cloud engineer is setting up automated patching for Linux instances in AWS. They need to define a maintenance window during which patches are applied. Which service should they use?

Accepted Answer

AWS Systems Manager Patch Manager. AWS Systems Manager Patch Manager provides automated patching with maintenance windows.

Answer

AWS Config

Answer

AWS OpsWorks

Answer

Amazon Inspector

Question 7

A company's disaster recovery plan requires them to restore a database to a specific point in time. Which backup strategy should they use?

Accepted Answer

Continuous replication for DR. Continuous replication enables point-in-time recovery by maintaining ongoing changes.

Answer

Cross-region replication

Answer

Full daily backup

Answer

Snapshot-based backup

Question 8

A cloud administrator is troubleshooting a network connectivity issue between two subnets. They suspect a security group or NACL is blocking traffic. Which tool should they use to analyze the traffic flow?

Accepted Answer

VPC Flow Logs. VPC Flow Logs capture network traffic metadata, helping identify dropped packets.

Answer

AWS X-Ray

Answer

AWS CloudTrail

Answer

AWS Config

Question 9

A cloud engineer needs to ensure that an auto-scaling group does not launch new instances immediately after a scale-in event to allow metrics to stabilize. Which feature should they configure?

Accepted Answer

Cooldown periods. Cooldown periods prevent premature scaling by allowing metrics to stabilize.

Answer

Health checks

Answer

Scheduled scaling

Answer

Lifecycle hooks

Question 10

A cloud administrator wants to be notified immediately via email when a critical alert is triggered. Which notification channel should they configure?

Accepted Answer

Email. Email is a typical notification channel for alerts.

Answer

AWS Config

Answer

Amazon SNS

Answer

AWS CloudTrail

Question 11

A company wants to reduce costs by identifying underutilized EC2 instances. Which tool should they use to get rightsizing recommendations?

Accepted Answer

AWS Compute Optimizer. AWS Compute Optimizer analyzes instance usage and recommends optimal sizes.

Answer

AWS Cost Explorer

Answer

AWS Trusted Advisor

Answer

AWS Budgets

Question 12

A cloud operations team is implementing structured logging for better querying. They have decided to use JSON format. What is a key benefit of structured logging over unstructured logging?

Accepted Answer

Enables querying specific fields. Structured logging (e.g., JSON) enables efficient querying and filtering of log data.

Answer

Easier to read for humans

Answer

Reduced storage costs

Answer

Faster log ingestion

Question 13

A cloud architect is designing a disaster recovery plan that includes testing. Which TWO activities are commonly performed as part of DR testing?

Accepted Answer

Chaos engineering. DR testing includes scheduled drills and chaos engineering to validate recovery procedures.

Answer

Reserved Instance planning

Answer

Rightsizing recommendations

Answer

Tagging resources

Question 14

A cloud engineer is troubleshooting a performance issue in a microservices application. Which THREE tools can help with distributed tracing and latency diagnosis?

Accepted Answer

GCP Cloud Trace. AWS X-Ray, Azure Application Insights, and GCP Cloud Trace are distributed tracing services.

Answer

AWS CloudTrail

Answer

VPC Flow Logs

Question 15

A company wants to implement automated patching for their cloud resources. Which TWO services are designed for patch management?

Accepted Answer

Azure Update Management. AWS Systems Manager Patch Manager and Azure Update Management are dedicated patch management services.

Answer

Amazon Inspector

Answer

GCP Cloud Audit Logs

Answer

AWS Config

Question 16

A cloud administrator needs to monitor CPU utilization for a fleet of EC2 instances and receive notifications when utilization exceeds 80%. Which AWS service should be used to create a metric alarm that triggers an SNS notification?

Accepted Answer

Amazon CloudWatch. Amazon CloudWatch is the AWS service for monitoring metrics and creating alarms. CloudWatch Alarms can be configured to trigger SNS notifications when a metric crosses a threshold.

Answer

AWS Config

Answer

AWS Trusted Advisor

Answer

AWS CloudTrail

Question 17

A company wants to centralize logs from multiple AWS services and analyze them using SQL-like queries. Which service should they use?

Accepted Answer

Amazon CloudWatch Logs Insights. Amazon CloudWatch Logs Insights allows querying log data using a SQL-like query language. CloudWatch Logs is the centralized log management service in AWS.

Answer

AWS CloudTrail

Answer

Amazon S3

Answer

AWS Config

Question 18

A cloud engineer is configuring an auto-scaling group and wants to add instances based on a sustained increase in CPU utilization above 80% for 5 minutes. Which scaling policy type should be used?

Accepted Answer

Step scaling policy. Step scaling policies allow you to define steps that respond to metric breaches with specific actions, such as adding a certain number of instances when CPU exceeds 80% for a specified period.

Answer

Target tracking scaling policy

Answer

Simple scaling policy

Answer

Scheduled scaling policy

Question 19

A cloud administrator needs to perform a disaster recovery test for a critical application running in a different AWS region. The RTO is 1 hour, and the RPO is 15 minutes. Which replication strategy should be used to meet the RPO?

Accepted Answer

Continuous replication. Continuous replication ensures data is replicated with minimal lag, typically meeting a 15-minute RPO. Snapshot-based replication would have longer intervals.

Answer

Hourly snapshot-based replication

Answer

Daily snapshot-based replication

Answer

Cross-region replication with eventual consistency

Question 20

A company uses AWS and wants to optimize costs by receiving recommendations to downsize over-provisioned EC2 instances. Which tool provides rightsizing recommendations?

Accepted Answer

AWS Compute Optimizer. AWS Compute Optimizer analyzes instance configurations and utilization to provide rightsizing recommendations, helping reduce costs by downsizing underutilized instances.

Answer

AWS Budgets

Answer

AWS Trusted Advisor

Answer

AWS Cost Explorer