CompTIA CV0-004 Online Practice Questions and Exam Preparation

CompTIA CV0-004 Online Questions & Answers

• Question 231:

  Which of the following should be added to a SAN to decrease the amount of time it takes a server to back up in a private cloud?

  A. Fibre Channel
  B. Kubernetes
  C. Clustering
  D. UDP
  A. Fibre Channel

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  Explanation

  Fibre Channel provides high-speed, low-latency data transfer within a SAN, which reduces backup time by increasing throughput between the server and storage.

• Question 232:

  A social networking company operates globally. Some users from Brazil and Argentina are reporting the following error: website address was not found.

  Which of the following is the most likely cause of this outage?

  A. Client DNS misconfigutation
  B. Regional DNS provider outage
  C. DNS server misconfiguration
  D. DNS propagation issues
  B. Regional DNS provider outage

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  Explanation

  The most likely cause of the outage, with users from specific regions like Brazil and Argentina reporting an error that the website address was not found, is a regional DNS provider outage. This type of outage would affect users in particular areas, preventing domain name resolution and leading to the reported error.

  References:

  Regional outages and their impact on service availability are discussed within the Cloud Concepts domain, which includes understanding the importance of DNS in cloud services, as per the CompTIA Cloud+ objectives.

• Question 233:

  A cloud administrator is reviewing the current private cloud and public law environment, and is building an optimization plan. Portability is of great concern for the administrator so resources can be easily moved from one environment to another.

  Which of the following should the administrator implement?

  A. Serverless
  B. CDN
  C. Containers
  D. Deduplication
  C. Containers

• Question 234:

  Which of the following cloud deployment models is the best way to replicate a workload non-disruptively between on-premises servers and a public cloud?

  A. Public
  B. Community
  C. Private
  D. Hybrid
  D. Hybrid

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  Explanation

  A hybrid cloud deployment model is the best way to replicate workloads non-disruptively between on-premises servers and a public cloud. This model integrates on-premises infrastructure, or private clouds with public clouds, allowing data and applications to be shared between them.

  References:

  CompTIA Cloud+ Study Guide (Exam CV0-004) - Chapter on Cloud Deployment Models

• Question 235:

  A customer is migrating applications to the cloud and wants to grant authorization based on the classification levels of each system.

  Which of the following should the customer implement to ensure authorisation to systems is granted when the user and system classification properties match? (Select two).

  A. Resource tagging
  B. Discretionary access control
  C. Multifactor authentication
  D. Role-based access control
  E. Token-based authentication
  F. Bastion host
  A. Resource tagging
  D. Role-based access control

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  Explanation

  This scenario requires authorization decisions based on both user and system classification attributes.

  Resource tagging allows systems and cloud resources to be labeled with classification metadata (for example, Public, Confidential, or Secret). Role-based access control (RBAC) assigns permissions to users based on their organizational roles. Together, these mechanisms enable access decisions that align user permissions with the classification of the target resource.

  Discretionary access control relies on resource owners to grant permissions and does not enforce classification-based authorization. Multifactor authentication and token-based authentication verify identity but do not determine authorization based on classification. A bastion host provides secure administrative access but is unrelated to authorization policies.

• Question 236:

  A cloud engineer is managing a three-tiered application. An application load balancer is sitting in front of a web layer. After a deployment, the engineer tries to access the website and receives an HTTP 504 error.

  Which of the following should the engineer do to identify the issue?

  A. Restart the database
  B. View the health check configuration
  C. Update the autoscaling policy
  D. Redeploy the application tiers in a new subnet
  B. View the health check configuration

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  Explanation

  An HTTP 504 error from an application load balancer indicates that the backend servers are not responding in time. Reviewing the health check configuration helps identify whether the web layer or subsequent tiers are failing to respond within the expected timeout, allowing the engineer to pinpoint the underlying issue.

• Question 237:

  A company is migrating to a cloud. The company wants a solution that will help developers focus primarily on code rather than on managing infrastructure.

  Which of the following best meets this need?

  A. Deploying IaaS
  B. Configuring FaaS
  C. Subscribing to PaaS
  D. Purchasing SaaS
  C. Subscribing to PaaS

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  Explanation

  Platform as a Service (PaaS) allows developers to focus on writing and deploying code while the cloud provider manages the underlying infrastructure, operating systems, middleware, and runtime environment.

  This significantly reduces infrastructure management responsibilities and enables developers to concentrate primarily on application development.

• Question 238:

  A cloud administrator is implementing backups for a virtual file server with a large number of daily changes to files. The backups have historically caused performance issues on the server. As a result, the company has asked for backups to be completed as quickly as possible. The administrator opts for an incremental backup technology.

  Which of the following statements best explains the administrator's choice?

  A. Differential backups cannot be used in conjunction with full backups
  B. Differential backups are generally slower than incremental backups
  C. Differential backups cannot be used for granular recovery.
  D. Differential backups always consume more space than incremental backups
  B. Differential backups are generally slower than incremental backups

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  Explanation

  Differential backups grow larger each day because they copy all changes since the last full backup, making them slower to complete. Incremental backups copy only the changes since the most recent backup, allowing the process to finish more quickly and reducing performance impact on the server.

• Question 239:

  A stakeholder requests project performance data.

  Which of the following should the project manager provide?

  A. Issue log
  B. Dashboard
  C. Work breakdown structure
  D. Milestone chart
  B. Dashboard

• Question 240:

  A cloud engineer needs to deploy a new version of a web application to 100 servers. In the past, new version deployments have caused outages.

  Which of the following deployment types should the cloud engineer implement to prevent the outages from happening this time?

  A. Rolling
  B. Blue-green
  C. Canary
  D. Round-robin
  C. Canary

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  Explanation

  A canary deployment is a pattern that reduces the risk of introducing a new software version in production by slowly rolling out the change to a small subset of users before rolling it out to the entire infrastructure.

  It's an effective strategy to prevent outages since it allows for monitoring and quick rollback if issues arise without affecting all users.

  References:

  Canary releases are part of deployment strategies that can help mitigate the risk of outages during updates, a concept included in the CompTIA Cloud+ curriculum.