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Dell Cloud Services Design Free Sample Questions

Covers transforming traditional IT, cloud service lifecycle and financial planning, workforce transformation, multi-cloud strategy, the cloud operating model, and cloud-native applications.

20 free sample questions200 in the full practice test

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D-CS-DS-23 Sample Questions

  1. Question 1

    A financial services firm is adopting a cloud operating model and wants to implement Infrastructure as Code (IaC) using Terraform. The development team is distributed globally. During initial testing, developers storing the terraform.tfstate file on their local machines caused frequent overwrites and configuration drift. Which action represents the most robust and secure solution to this problem?

    Answer and explanation

    Correct answer: B

    Using a remote backend is the standard best practice for teams using Terraform. It provides a centralized, consistent location for the state file. Crucially, features like state locking prevent multiple users from running terraform apply simultaneously, avoiding race conditions and state corruption. Enabling server-side encryption adds a critical layer of security for the sensitive information often contained in state files.

  2. Question 2

    Multiple answers

    A development team is building a new cloud-native application. They have embedded database connection strings, API keys, and other credentials directly into their container images for simplicity. Which two Twelve-Factor App principles are being violated by this practice? (Select TWO)

    Answer and explanation

    Correct answers: B, D

    Factor III (Config) states that configuration which varies between deploys (development, staging, production) should be stored in the environment. Hardcoding credentials into the container image violates this, as the image would need to be rebuilt for each environment.

    Factor V (Build, release, run) demands strict separation between these stages. By embedding environment-specific configuration into the container image, the build stage is being contaminated with configuration that belongs in the release stage. A single build (image) should be promotable to any environment by applying the correct external configuration.

  3. Question 3

    A large enterprise is struggling with a siloed organizational structure where Development, QA, and Operations teams work independently. This has resulted in long deployment cycles, frequent integration issues, and a culture of blame. As a cloud architect, which organizational change is most critical for a successful workforce transformation towards a cloud-native model?

    Answer and explanation

    Correct answer: C

    The core principle of a cloud-native and DevOps-oriented workforce transformation is to break down silos. Creating cross-functional teams where developers, QA engineers, and operations specialists work together on a specific product fosters collaboration, shared responsibility, and faster feedback loops. This directly addresses the problems of long cycles and blame culture.

  4. Question 4

    A European retail company wants to leverage services from both AWS and Azure to avoid vendor lock-in and use best-of-breed services for analytics and AI. They also need to maintain a private cloud for processing sensitive customer data in their on-premises data center. Which term best describes their overall cloud strategy?

    Answer and explanation

    Correct answer: D

    This strategy incorporates elements of both hybrid and multi-cloud. It is 'hybrid' because it combines a private cloud (on-premises data center) with public clouds. It is 'multi-cloud' because it uses more than one public cloud provider (AWS and Azure). Therefore, 'Hybrid Multi-cloud' is the most precise and comprehensive term for this architecture.

  5. Question 5

    A team is conducting a value stream mapping exercise for their software delivery process. They have identified several stages and the average time spent in each. The analysis reveals that a feature request waits in a backlog for 30 days before development starts, development takes 5 days, testing takes 3 days, and deployment takes 1 day. However, the code spends 10 days waiting for a manual security review between development and testing. What is the lead time for this process?

    Answer and explanation

    Correct answer: C

    Lead time in value stream mapping is the total time from the initial request to the final delivery. It includes both value-added time (active work) and non-value-added time (wait time). The calculation is: 30 days (backlog wait) + 5 days (development) + 10 days (security review wait) + 3 days (testing) + 1 day (deployment) = 49 days.

  6. Question 6

    True or False: In a Twelve-Factor App, administrative or management tasks, such as database migrations, should be handled by SSHing into a production server and running scripts manually.

    Answer and explanation

    Correct answer: B

    This is false. Factor XII (Admin processes) states that admin tasks should be run as one-off processes. This means they should be run in an identical environment as the regular long-running processes of the app, using the same codebase and configuration. Manually SSHing into a server can lead to inconsistencies and non-repeatable actions, which violates the principles of disposable and reproducible environments.

  7. Question 7

    A healthcare organization is modernizing its monolithic patient records application. Due to strict regulatory requirements and the complexity of the system, a complete rewrite is not feasible in the short term. The organization wants to incrementally migrate functionality to new microservices. Which application modernization approach is best suited for this scenario?

    Answer and explanation

    Correct answer: C

    The Strangler Fig Pattern is specifically designed for incremental modernization of a legacy system. It involves gradually building new microservices around the old monolith, routing traffic to the new services as they become available. Over time, the new services 'strangle' the old system until it can be decommissioned. This approach minimizes risk and allows for a phased migration, which is ideal for complex, mission-critical applications.

  8. Question 8

    When designing a disaster recovery (DR) strategy for a critical cloud service, a business analyst has defined a Recovery Point Objective (RPO) of 15 minutes and a Recovery Time Objective (RTO) of 1 hour. What do these two metrics signify?

    Answer and explanation

    Correct answer: B

    RPO (Recovery Point Objective) refers to the maximum acceptable amount of data loss, measured in time. An RPO of 15 minutes means the business cannot lose more than 15 minutes of data. RTO (Recovery Time Objective) is the target time within which a business process must be restored after a disaster to avoid unacceptable consequences. An RTO of 1 hour means the service must be back online within one hour of the disaster.

  9. Question 9

    An organization is transitioning from a traditional IT model, where infrastructure is procured and managed as a capital expenditure (CapEx), to a public cloud model. How does this shift primarily impact financial planning?

    Answer and explanation

    Correct answer: C

    The fundamental financial change when moving to the cloud is the shift from Capital Expenditure (CapEx) to Operational Expenditure (OpEx). Instead of purchasing physical servers and data center hardware upfront, organizations pay a recurring fee for the services they consume. This changes how IT is budgeted for, moving from a fixed asset model to a variable operational cost model.

  10. Question 10

    A government agency is implementing a new cloud governance framework. A key requirement is to enforce tagging standards on all new resources to track costs by department. Additionally, they want to prevent the deployment of overly expensive virtual machine instances in development environments. Which cloud governance concept is BEST suited to automate the enforcement of these policies?

    Answer and explanation

    Correct answer: C

    Policy as Code (PaC) is the practice of defining and managing governance policies using code. Tools like Azure Policy, AWS Config Rules, or Open Policy Agent allow for the creation of rules that can automatically audit, enforce, or remediate non-compliant resources. This is the most effective and scalable way to enforce rules like mandatory tagging and instance type restrictions automatically, preventing non-compliant deployments before they happen.