CompTIA Cloud+ Troubleshooting Cloud Deployments Questions and Answers

Question 1

A DevOps engineer used a CI/CD pipeline to deploy a new version of a containerized application.
Immediately after the deployment finishes, monitoring alerts indicate that users are receiving "503 Service Unavailable" errors.
Which of the following is the MOST appropriate first step for the engineer to take to diagnose the problem?

Accepted Answer

Check the health check status and deployment logs of the new application containers.

Answer

Increase the number of running container instances to handle the load.

Answer

Roll back the deployment to the previously known stable version.

Answer

Verify that the DNS records for the service are pointing to the correct load balancer.

Question 2

An automated deployment script, running from a CI/CD server, fails when attempting to create a new cloud storage bucket. The error message returned by the cloud provider's API is "AccessDenied". The same script was able to successfully provision virtual machines just moments before this failure. What is the MOST likely cause of this error?

Accepted Answer

The IAM role assigned to the CI/CD server lacks the specific permission to create storage buckets.

Answer

The desired storage bucket name is already in use by another account.

Answer

The cloud provider is experiencing a regional service outage for their storage service.

Answer

The CI/CD server has lost network connectivity to the cloud provider's API endpoint.

Question 3

An administrator deploys a two-tier application with a web server in a public subnet and a database server in a private subnet within the same VPC. The web server is accessible from the internet, but it cannot connect to the database server. A connectivity test using the database server's private IP address and port number from the web server times out. Which of the following is the MOST likely misconfiguration?

Accepted Answer

The security group for the database server does not have an inbound rule allowing traffic from the web server.

Answer

The route table for the public subnet does not have a route to the internet gateway.

Answer

The Network ACL associated with the private subnet is blocking outbound traffic.

Answer

The VPC's DNS resolution setting is disabled.

Question 4

A deployment script designed to provision a large-scale data processing cluster fails consistently. The script successfully creates the first 20 virtual machines but then stops with a "LimitExceeded" error. The administrator verifies that the account has a sufficient spending budget and the IAM permissions are correct. What is the MOST appropriate action to resolve this issue?

Accepted Answer

Submit a request to the cloud provider to increase the service quota for that VM type.

Answer

Deploy the remaining virtual machines in a different availability zone.

Answer

Rewrite the script to pause for several minutes after every 20 VMs are created.

Answer

Split the deployment into smaller templates that create fewer than 20 VMs each.

Question 5

An application that worked perfectly in the quality assurance (QA) environment fails to start after being deployed to production. The error log indicates a missing library file. An investigation reveals that the production servers were built from a base OS image that was one minor version older than the image used in QA. Which of the following provides the BEST long-term solution to prevent this type of configuration drift?

Accepted Answer

Implementing Infrastructure as Code (IaC) to define and version-control all environments.

Answer

Granting developers temporary administrative access to production to fix deployment issues.

Answer

Creating more detailed manual deployment checklists for the operations team to follow.

Answer

Performing a full backup of the QA environment and restoring it to production for each deployment.

Question 6

A cloud administrator is troubleshooting an intermittent performance issue in a multi-tier application. Users report that some requests are extremely slow, but others are fast. To diagnose the problem, the administrator needs to visualize the entire lifecycle of a single slow user request as it travels through the front-end web server, an authentication microservice, and a backend API. Which of the following observability tools is specifically designed for this purpose?

Accepted Answer

A distributed tracing system

Answer

A log aggregation platform

Answer

A synthetic monitoring tool

Answer

An infrastructure monitoring dashboard