Preview Questions DevOps | Role Specific Skill

Question 1: You're investigating a performance issue in your application, but you're not sure where the bottleneck is. What tools or techniques would you use to identify the root cause?

Which action should you take?

Choose only one option

Use application performance monitoring (APM) tools to trace requests and identify slow or problematic code paths.

Analyze system-level metrics like CPU, memory, and disk usage to identify resource constraints.

Profile the application code to pinpoint specific functions or methods that are causing performance issues.

All of the above.

Question 2: You're using Prometheus to monitor your Kubernetes cluster. You want to create an alert when the number of pods in a deployment drops below a certain threshold. How would you do this?

Which action should you take?

Choose only one option

Write a PromQL query to track the number of pods and configure an alert rule in Alertmanager.

Use Kubernetes events to trigger alerts when pods are terminated or fail to start.

Set up a custom script to periodically check the number of pods and send alerts if necessary.

Rely on Kubernetes' built-in health checks to detect pod failures and trigger alerts.

Question 3: You are tasked with improving the performance and efficiency of your monitoring infrastructure, which is struggling to keep up with the increasing volume and complexity of data generated by your systems. What strategies do you employ to address this challenge?

Which action should you take?

Choose only one option

Upgrade your monitoring infrastructure's hardware and software components to handle the increased load and data volume, ensuring sufficient processing power and storage capacity.

Optimize data collection and aggregation processes, leveraging techniques such as sampling, filtering, and compression to reduce the amount of data transmitted and stored.

Implement a distributed monitoring architecture, partitioning data collection and analysis across multiple nodes or regions to improve scalability and fault tolerance.

Evaluate and potentially adopt a cloud-native monitoring solution that can leverage the elasticity and scalability of the cloud to handle fluctuating workloads.

Question 4: A security vulnerability is discovered in a third-party library used in your application. How do you respond and ensure the security of your CI/CD pipeline?

Which action should you take?

Choose only one option

Update the library to the latest version and re-run the pipeline to ensure compatibility.

Conduct a thorough security assessment to identify and mitigate any potential risks associated with the vulnerability.

Implement automated security scanning tools in the pipeline to detect vulnerabilities in dependencies.

Temporarily disable the affected functionality until a patch or fix is available.

Question 5: You're using Azure Blob Storage to store large amounts of unstructured data. You need to control access to this data based on user roles and permissions. What service would you use to manage access?

Which action should you take?

Choose only one option

Azure Active Directory

Azure Role-Based Access Control (RBAC)

Azure Key Vault

Azure Security Center

Question 6: You are tasked with improving the developer experience and productivity when working with containerized applications. What strategies do you implement to streamline development workflows and enable faster iteration cycles?

Which action should you take?

Choose only one option

Provide developers with self-service tools and platforms to build, test, and deploy containerized applications independently, reducing reliance on operations teams.

Implement a local development environment that closely mirrors the production environment, enabling developers to test and debug their code in a realistic setting.

Leverage container orchestration platforms like Kubernetes to automate the deployment and management of development environments, ensuring consistency and reproducibility.

Foster a culture of collaboration and knowledge sharing between development and operations teams, promoting a shared understanding of containerization best practices and workflows.