FREE CompTIA Cloud+ Cloud Environment Troubleshooting Questions and Answers

Question 1

A cloud engineer is troubleshooting a connectivity issue where an application on a virtual machine (VM) in a private subnet cannot access a public API on the internet. A NAT gateway exists in a public subnet, and the security group for the VM allows all outbound traffic. What is the MOST likely misconfiguration causing this issue?

Accepted Answer

The route table for the private subnet does not have a route pointing to the NAT gateway.

Answer

For a resource in a private subnet to access the internet, its subnet's route table must have a default route (0.0.0.0/0) that directs traffic to a NAT gateway. The NAT gateway, located in a public subnet, then forwards the traffic to the Internet Gateway. A missing or incorrect route in the private subnet's route table is the most common cause of this specific problem.

Question 2

An e-commerce application is experiencing slow performance. Monitoring dashboards show that the database instances have CPU utilization consistently above 90% but normal memory and I/O metrics. The database is primarily handling a large volume of read requests. Which of the following is the MOST effective solution to resolve this performance bottleneck?

Accepted Answer

Implement a read replica and direct read queries to it.

Answer

The high CPU utilization indicates the database server is overwhelmed with processing queries. Since the workload is read-heavy, introducing a read replica allows the application to offload the read queries from the primary database instance. This distributes the load and reduces the CPU pressure on the primary, resolving the bottleneck.

Question 3

A deployment of a new application version using an Infrastructure as Code (IaC) script fails with an error message: "The requested resource is not available in the specified availability zone." The script attempts to create a virtual machine using a specific instance type. Which of the following is the MOST likely cause of this error?

Accepted Answer

The specified instance type is not offered in the selected availability zone.

Answer

Cloud providers do not always offer every instance type in every availability zone within a region. This error indicates that the specific combination of instance type and availability zone chosen in the IaC script is invalid. The troubleshooting step is to check the cloud provider's documentation for available instance types in that zone and update the script.

Question 4

A cloud administrator receives an alert that a storage bucket containing sensitive data is publicly accessible, which violates company policy. Which of the following tools should the administrator use to proactively and continuously scan the cloud environment for such misconfigurations and policy violations?

Accepted Answer

A Cloud Security Posture Management (CSPM) tool

Answer

A Cloud Security Posture Management (CSPM) tool is designed to automate the detection of security risks related to misconfigurations in cloud environments. It continuously monitors for policy violations, such as publicly exposed storage buckets or overly permissive IAM roles, and provides remediation guidance.

Question 5

An application hosted in the cloud has stopped responding. A cloud engineer discovers that a critical service on the virtual machine has crashed. The engineer restarts the service, and the application recovers. To prevent manual intervention for this issue in the future, which of the following should be implemented?

Accepted Answer

Create an automated health check that restarts the service upon failure.

Answer

The most effective solution is to automate the remediation process. By configuring a health check, the system can automatically detect when the critical service is unresponsive and execute a pre-defined action, such as restarting the service. This improves reliability and reduces Mean Time to Recovery (MTTR).

CompTIA Cloud+ Practice Test

CompTIA Cloud+ Practice Test

FREE CompTIA Cloud+ Cloud Environment Troubleshooting Questions and Answers