Free CompTIA Cloud+ Cloud Operations and Support Questions and Answers — Questions and Answers
Question 1: An operations team receives an alert that the CPU utilization on a critical web server VM has been at 100% for the past hour, causing slow response times for users. According to a standard troubleshooting methodology, what is the MOST appropriate next step?
- Immediately scale up the VM to a larger instance size.
- Establish a theory of probable cause for the high CPU usage. (Correct answer)
- Document the findings and the actions taken.
- Reboot the virtual machine to clear any hung processes.
Correct answer: Establish a theory of probable cause for the high CPU usage.
The standard IT troubleshooting methodology follows a sequence: 1. Identify the problem, 2. Establish a theory of probable cause, 3. Test the theory, 4. Establish a plan of action, 5. Implement the solution, 6. Verify functionality, and 7. Document findings. The problem (100% CPU) has been identified, so the next logical step is to form a hypothesis about why it's happening before taking action.
Question 2: A cloud administrator needs to apply security patches to a fleet of virtual machines that are part of an auto-scaling group behind a load balancer. Which of the following is the BEST method to perform this update with minimal service disruption?
- Create a new golden image with the patches applied and perform a rolling update. (Correct answer)
- Manually connect to each instance and run the update commands during off-hours.
- Stop the auto-scaling group, patch all instances at once, and then restart the group.
- Write a script that takes a snapshot of each instance before applying patches directly to the live servers.
Correct answer: Create a new golden image with the patches applied and perform a rolling update.
A rolling update using a new patched "golden image" (e.g., AMI) is the standard cloud practice for updating instances in an auto-scaling group. This method replaces old, unpatched instances with new, patched instances gradually, ensuring the application remains available behind the load balancer throughout the process. The other methods would either cause significant downtime or be inefficient and risky.
Question 3: The finance department has notified the cloud operations team of a sudden and significant increase in the monthly cloud bill, specifically related to data egress charges. Which of the following actions should the team take FIRST to investigate the root cause?
- Purchase a savings plan or reserved instances to lower the cost per hour.
- Configure a Content Delivery Network (CDN) for all web-facing applications.
- Analyze detailed billing and usage reports, filtering by data transfer out of the cloud region. (Correct answer)
- Implement a data loss prevention (DLP) solution to block unauthorized data transfers.
Correct answer: Analyze detailed billing and usage reports, filtering by data transfer out of the cloud region.
Before taking any corrective action, the first step is to diagnose the problem. Data egress fees are charges for moving data out of a cloud provider's network. Analyzing detailed billing and cost management reports will provide data on which service, resource, or region is responsible for the high volume of data transfer, allowing the team to pinpoint the cause. The other options are potential solutions, not investigative steps.
Question 4: An operations engineer is frequently tasked with restarting a specific service on a virtual machine whenever a monitoring tool detects that the service has failed. To reduce manual effort and improve response time, the engineer wants to automate this process. Which of the following is the MOST appropriate tool or concept to use?
- A runbook (Correct answer)
- A baseline
- A post-mortem report
- A snapshot
Correct answer: A runbook
A runbook details the step-by-step procedures for a routine operational task, such as restarting a failed service. In modern cloud operations, runbooks are often automated scripts or workflows that can be triggered by alerts to perform corrective actions without manual intervention.
Question 5: A cloud monitoring system triggers a critical alert indicating a potential DDoS attack against a company's public-facing web application. According to a typical incident response lifecycle, which phase involves actions taken to limit the impact of the attack?
- Preparation
- Identification
- Containment (Correct answer)
- Post-Incident Activity
Correct answer: Containment
The standard incident response lifecycle includes phases like Preparation, Identification/Detection, Containment, Eradication, Recovery, and Post-Incident Activity/Lessons Learned. The Containment phase specifically focuses on actions to isolate the affected systems and limit the scope and magnitude of the incident to prevent further damage.
Question 6: A cloud administrator is configuring monitoring for a multi-tier application. They need to collect detailed, application-specific metrics, such as transaction times, code-level performance, and error rates within the application itself. Which type of monitoring would provide this level of insight?
- Infrastructure monitoring
- Application Performance Monitoring (APM) (Correct answer)
- Security Information and Event Management (SIEM)
- Network flow logging
Correct answer: Application Performance Monitoring (APM)
Application Performance Monitoring (APM) tools are specifically designed to provide deep visibility into an application's behavior. They track user requests, code execution, and dependencies to provide detailed metrics on transaction performance and error rates, which is distinct from infrastructure monitoring that focuses on underlying resources like CPU and memory.
Free CompTIA Cloud+ Cloud Operations and Support Questions and Answers
An operations team receives an alert that the CPU utilization on a critical web server VM has been at 100% for the past hour, causing slow response times for users.
According to a standard troubleshooting methodology, what is the MOST appropriate next step?