CompTIA CV0-004 Online Practice Questions and Exam Preparation

CompTIA CV0-004 Online Questions & Answers

• Question 241:

  A systems administrator is planning to deploy a database cluster in a virtualization environment. The administrator needs to ensure the database nodes do not exist on the same physical host.

  Which of the following would best meet this requirement?

  A. Oversubscription
  B. Anti-affinity
  C. A firewall
  D. A separate cluster
  B. Anti-affinity

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  Explanation

  Anti-affinity is a rule that specifies that certain virtual machines should not run on the same physical host.

  This can help to improve availability and performance by avoiding single points of failure and resource contention. For example, if the database nodes are running on the same host and the host fails, the entire database cluster will be unavailable. By using anti-affinity rules, the systems administrator can ensure the database nodes are distributed across different hosts in the virtualization environment.

  References:

  CompTIA Cloud+ CV0-003 Study Guide, Chapter 2: Deploying a Cloud Environment, page 76.

• Question 242:

  Which of the following describes what CRUD is typically used for?

  A. Relational databases
  B. Time series databases
  C. Graph databases
  D. NoSQL databases
  A. Relational databases

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  Explanation

  CRUD stands for Create, Read, Update, Delete, and it is most commonly used for interacting with relational databases. These operations form the basis of persistent storage manipulation in most applications that use a database to store data.

  References:

  CompTIA Cloud+ Guide to Cloud Computing (ISBN: 978-1-64274-282-2)

• Question 243:

  Which of the following commands allows a developer to save changes in the remote repository?

  A. git push
  B. git fetch
  C. git pull
  D. git commit
  A. git push

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  Explanation

  git push uploads local repository changes to the remote repository, saving them so others can access the updated code.

• Question 244:

  A cloud administrator must increase the performance of an application by modifying the server disks from

  HDD to SSD.

  In which of the following ways will the server most benefit from this change?

  A. Smaller storage footprint
  B. Increase in IOPS
  C. More memory throughput
  D. Fewer CPU cycles
  B. Increase in IOPS

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  Explanation

  Solid-state drives provide significantly faster read and write operations compared to hard disk drives because they do not rely on mechanical components. This results in a higher number of input/output operations per second (IOPS), which improves disk performance and overall application responsiveness.

• Question 245:

  A company needs to deploy its own code directly in the cloud without provisioning additional infrastructure.

  Which of the following is the best cloud service model for the company to use?

  A. PaaS
  B. SaaS
  C. laaS
  D. XaaS
  A. PaaS

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  Explanation

  Platform as a Service (PaaS) is the best cloud service model for deploying code directly in the cloud without provisioning additional infrastructure. PaaS provides a platform allowing customers to develop, run, and manage applications without the complexity of building and maintaining the infrastructure.

  References:

  The PaaS model and its benefits for application deployment are covered under the Cloud Concepts domain in the CompTIA Cloud+ certification.

• Question 246:

  SIMULATION

  You are a cloud engineer working for a cloud service provider that is responsible for an IaaS offering.

  Your customer, who creates VMs and manages virtual storage, has noticed I/O bandwidth issues and low IOPS (under 9000).

  Your manager wants you to verify the proper storage configuration as dictated by your service level agreement (SLA).

  The SLA specifies:

  1. Each SFP on the hypervisor host must be set to the maximum link speed allowed by the SAN array. . All SAN array disk groups must be configured in a RAID 5.

  2. The SAN array must be fully configured for redundant fabric paths. . IOPS should not fall below 14000

  INSTRUCTIONS

  Click on each service processor to review the displayed information. Then click on the drop-down menus to change the settings of each device as necessary to conform to the SLA requirements.

  

  

  

  

  A. See the explanation for complete solution.
  B. PlaceHolder
  C. PlaceHolder
  D. PlaceHolder
  A. See the explanation for complete solution.

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  Explanation

  Based on the SLA requirements and the information provided in the diagram:

  For the Hypervisor:

  Slot A fiber channel card:

  Port 1 link speed should be set to 16 Gbps since it's connected to Fabric switch A which supports 16 Gbps.

  Port 2 link speed should be set to 8 Gbps because it's connected to Fabric switch B which supports up to 8 Gbps.

  Slot B fiber channel card:

  Port 1 link speed should be set to 16 Gbps since it's connected to Fabric switch A which supports 16 Gbps.

  Port 2 link speed should be set to 8 Gbps because it's connected to Fabric switch B which supports up to 8 Gbps.

  

• Question 247:

  Which of the following is the correct order of the steps to take when a system is suspected of being vulnerable?

  A. Scanning scope, identification, assessment, and remediation
  B. Assessment, identification, scanning scope, and remediation
  C. Identification, scanning scope, assessment, and remediation
  D. Assessment, scanning scope, identification, and remediation
  A. Scanning scope, identification, assessment, and remediation

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  Explanation

  The proper order is to first define the scanning scope, then identify vulnerabilities, assess their impact, and finally apply remediation.

• Question 248:

  A cloud engineer is in charge of deploying a platform in an laaS public cloud. The application tracks the state using session cookies, and there are no affinity restrictions.

  Which of the following will help the engineer reduce monthly expenses and allow the application to provide the service?

  A. Resource metering
  B. Reserved resources
  C. Dedicated host
  D. Pay-as-you-go model
  D. Pay-as-you-go model

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  Explanation

  A pay-as-you-go model would be beneficial for the cloud engineer because it allows the application to be scaled based on demand, reducing monthly expenses since costs are only incurred for the resources actually used. Since there are no affinity restrictions and the application uses session cookies for state tracking, the pay-as-you-go model can handle fluctuating workloads without the need to pay for unused reserved resources or dedicated hosts.

  References:

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

• Question 249:

  A new major version of a package installed on a VM was recently released.

  Which of the following should a cloud engineer do first before applying the upgrade?

  A. Review for package dependencies
  B. Raise a change request
  C. Investigate for any breaking changes
  D. Verify that patching the VM will not reset user data
  C. Investigate for any breaking changes

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  Explanation

  Investigating for breaking changes is the first step because a major version release may introduce incompatible modifications that could disrupt the application. Understanding these impacts is essential before any further action is taken.

• Question 250:

  Which of the following service options would provide the best availability for critical applications in the event of a disaster?

  A. Edge computing
  B. Cloud bursting
  C. Availability zones
  D. Multicloud tenancy
  C. Availability zones

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  Explanation

  Availability zones provide the best availability for critical applications in the event of a disaster. They are distinct locations within a cloud region that are engineered to be isolated from failures in other availability zones, thus providing redundancy and failover capabilities, which is essential for maintaining high availability of critical applications.

  References:

  The concept of availability zones and their importance in disaster recovery and high availability is covered under the domain of Management and Technical Operations in the CompTIA Cloud+ objectives.