CompTIA CV0-003 Online Practice Questions and Exam Preparation

CompTIA CV0-003 Online Questions & Answers

• Question 151:

  A web consultancy group currently works in an isolated development environment. The group uses this environment for the creation of the final solution, but also for showcasing it to customers, before commissioning the sites in production. Recently, customers of newly commissioned sites have reported they are not receiving the final product shown by the group, and the website is performing in unexpected ways. Which of the following additional environments should the group adopt and include in its process?

  A. Provide each web consultant a local environment on their device.
  B. Require each customer to have a blue-green environment.
  C. Leverage a staging environment that is tightly controlled for showcasing
  D. Initiate a disaster recovery environment to fail to in the event of reported issues.
  C. Leverage a staging environment that is tightly controlled for showcasing

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  Explanation

  The answer is

  C. Leverage a staging environment that is tightly controlled for showcasing. A staging environment is a replica of the production environment that is used for testing and demonstrating the final product before deployment. A staging environment can help the web consultancy group avoid the issues reported by the customers, such as mismatched expectations and unexpected behavior, by ensuring that the product is shown in a realistic and consistent setting. A staging environment can also help the group catch and fix any bugs or errors before they affect the live site. Some possible sources of information about web development environments are: 7 Web Development Best Practices: This page provides some general tips and best practices for web development, such as planning, accessibility, UX/UI, standards, code quality, compatibility, and security. Web Development Best Practices (Building Real-World Cloud Apps with Azure): This page explains some specific best practices for web development in the cloud environment, such as stateless web tier, session state management, CDN caching, and async programming. Web Development Best Practices: This page lists some resources for learning web development best practices in ASP.NET, such as async and await, building real- world cloud apps with Azure, and hands-on labs.

• Question 152:

  A new private cloud platform is being deployed by an engineer. SLA requirements state that any clusters should have a baseline redundancy sufficient to handle the failure of at least two hosts. The engineer records the following metrics after the deployment:

  

  Which of the following metrics is MOST likely to represent a violation of SLA?

  A. RAM utilization
  B. NIC utilization
  C. CPU utilization
  D. Disk utilization
  D. Disk utilization

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  Explanation

• Question 153:

  A systems administrator is configuring a storage array.

  Which of the following should the administrator configure to set up mirroring on this array?

  A. RAID 0
  B. RAID 1
  C. RAID 5
  D. RAID 6
  B. RAID 1

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  Explanation

  RAID 1 is a type of RAID level that creates an exact copy or mirror of data on two or more disks. RAID 1 can provide redundancy and fault tolerance, as it can survive the failure of one disk without losing any data. RAID 1 can also improve read performance, as it can access data from multiple disks simultaneously. The administrator should configure RAID 1 to set up mirroring on a storage array.

  References: CompTIA Cloud+ Certification Exam Objectives, page 9, section 1.4

  https://www.enterprisestorageforum.com/storage-management/raid-levels.html

• Question 154:

  A startup online gaming company is designing the optimal graphical user experience for multiplayer scenarios. However, online players have reported latency issues. Which of the following should the company configure as a remediation?

  A. Additional GPU memory
  B. Faster clock speed
  C. Additional CPU cores
  D. Dynamic allocations
  D. Dynamic allocations

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  Explanation

• Question 155:

  A cloud administrator needs to reduce storage costs. Which of the following would best help the administrator reach that goal?

  A. Enabling compression
  B. Implementing deduplication
  C. Using containers
  D. Rightsizing the VMs
  B. Implementing deduplication

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  Explanation

  Deduplication is a process by which redundant data is eliminated, thus reducing the size of the dataset. Deduplication with cloud storage reduces the storage requirements, along with the amount of data to be transferred over the network, resulting in faster and more efficient data protection operations1. Deduplication can help to shrink the data footprint, lower the storage costs, and improve the performance of backup and recovery processes2. Deduplication can be applied at different levels, such as file-level, block-level, or byte-level, depending on the granularity and efficiency of the technique3. Deduplication can also be performed at different locations, such as source, target, or cloud, depending on the architecture and design of the storage system3. By implementing deduplication, a cloud administrator can achieve significant data savings and optimize the cloud storage costs4.

  References: Data deduplication techniques for efficient cloud storage management: a systematic review; How Data Deduplication Reduces Cloud Data Costs; How Data Deduplication Can Save Cloud Storage Costs?; Data Deduplication Overview; What is Data Deduplication and How Can it Help Reduce Cloud Costs?.

• Question 156:

  A systems administrator is troubleshooting performance issues with a Windows VDI environment. Users have reported that VDI performance is very slow at the start of the work day, but the performance is fine during the rest of the day.

  Which of the following is the MOST likely cause of the issue?

  A. Disk I/O limits
  B. Affinity rule
  C. CPU oversubscription
  D. RAM usage
  C. CPU oversubscription

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  Explanation

• Question 157:

  A company still has several dedicated servers and wants to migrate them to its private cloud. Which of the following migration methods would be BEST to accomplish this goal?

  A. Virtual-to-virtual
  B. Storage
  C. Cloud-to-cloud
  D. Physical-to-virtual
  D. Physical-to-virtual

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  Explanation

• Question 158:

  A company has an internal SLA for CPU and RAM oversubscription that should stay below 120%. Storage utilization should stay below 90% with oversubscription below 160%. Given the following:

  

  Which of the following should be done to meet the SLA?

  A. Install a different hypervisor
  B. Add RAM to the hypervisors and new shelves to the storage array
  C. Add RAM to the hypervisors and increase the CPU clock
  D. Add CPU and RAM to the cluster
  D. Add CPU and RAM to the cluster

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  Explanation

• Question 159:

  A systems administrator receives an alert that VDI performance on the cluster is poor. Opening any application takes one to two minutes. The administrator investigates and finds the following conditions:

  1.Cluster memory utilization: 65%

  2.Cluster SSD utilization: 70%

  3.Average VM CPU wait time: 14%

  4.Cluster CPU utilization: 75%

  Which of the following actions should the administrator take to improve VDI performance?

  A. Add CPU resources to the cluster.
  B. Increase the number of vCPUs per VM.
  C. Add memory to the nodes in the cluster.
  D. Increase the amount of SSD storage in the cluster.
  A. Add CPU resources to the cluster.

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  Explanation

  A. Add CPU resources to the cluster: High CPU wait time indicates insufficient CPU resources for handling workload demands. Adding CPUs to the cluster will reduce latency and improve application performance.

  References:

  CompTIA Cloud+ CV0-003 Study Guide Chapter 14: Compute Sizing for Deployment.

• Question 160:

  A database analyst reports it takes two hours to perform a scheduled job after onboarding 10,000 new users to the system. The analyst made no changes to the scheduled job before or after onboarding the users. The database is hosted in an IaaS instance on a cloud provider.

  Which of the following should the cloud administrator evaluate to troubleshoot the performance of the job?

  A. The laaS compute configurations, the capacity trend analysis reports, and the storage IOPS
  B. The hypervisor logs, the memory utilization of the hypervisor host, and the network throughput of the hypervisor
  C. The scheduled job logs for successes and failures, the time taken to execute the job, and the job schedule
  D. Migrating from laaS to on premises, the network traffic between on-premises users and the laaS instance, and the CPU utilization of the hypervisor host
  A. The laaS compute configurations, the capacity trend analysis reports, and the storage IOPS

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  Explanation

  To troubleshoot the performance of a scheduled job that takes two hours to run after onboarding 10,000 new users to a cloud-based system, the administrator should evaluate the IaaS compute configurations, the capacity trend analysis reports, and the storage IOPS. These factors can affect the performance of a database job in an IaaS instance on a cloud provider. The IaaS compute configurations include the CPU, memory, and network resources assigned to the instance. The capacity trend analysis reports show the historical and projected usage and demand of the resources. The storage IOPS (Input/Output Operations Per Second) measure the speed and performance of the disk storage. The administrator should check if these factors are sufficient, optimal, or need to be adjusted to improve the performance of the job.