CompTIA CV0-004 Online Practice Questions and Exam Preparation

CompTIA CV0-004 Online Questions & Answers

• Question 461:

  Which of the following integration systems would best reduce unnecessary network traffic by allowing data to travel bidirectionally and facilitating real-time results for developers who need to display critical information within applications?

  A. REST API
  B. RPC
  C. GraphQL
  D. Web sockets
  D. Web sockets

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  Explanation

  Web sockets provide a full-duplex communication channel over a single, long-lived connection, allowing data to flow bidirectionally between a client and a server. This is ideal for real-time applications where developers need to display critical information without unnecessary network overhead, as it reduces the need for repetitive HTTP requests and allows for more efficient, instantaneous data updates and interactions.

• Question 462:

  An organization is hosting its dedicated email infrastructure with unlimited mailbox creation capability. The management team would like to migrate to a SaaS-based solution.

  Which of the following must be considered before the migration?

  A. The SaaS provider's licensing model
  B. The SaaS provider's reputation
  C. The number of servers the SaaS provider has
  D. The number of network links the SaaS provider has
  A. The SaaS provider's licensing model

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  Explanation

  The licensing model of the SaaS provider is an important factor to consider before migrating to a SaaS-based solution for email infrastructure. The licensing model determines how much the organization will pay for the service, how many mailboxes they can create, what features they can access, and what SLAs they can expect. The organization should compare different SaaS providers' licensing models and choose the one that best suits their needs and budget.

  References:

  CompTIA Cloud+ Certification Exam Objectives, Domain 1.0 Configuration and Deployment, Objective 1.4 Given a scenario, execute a provided deployment plan.

• Question 463:

  A systems administrator wants to ensure a system can adjust its resources based on usage.

  Which of the following will best accomplish this goal?

  A. Anti-affinity
  B. Autoscaling
  C. Right-sizing
  D. Oversubscription
  B. Autoscaling

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  Explanation

  Autoscaling is the best option to accomplish the goal of adjusting system resources based on usage.

  Autoscaling automatically adjusts the number of compute resources (such as virtual machines or containers) based on predefined conditions or metrics, such as CPU utilization, memory usage, or incoming network traffic. When demand increases, autoscaling can dynamically add more resources to handle the load, and when demand decreases, it can remove unnecessary resources to optimize costs.

• Question 464:

  A company runs a discussion forum that caters to global users. The company's monitoring system reports that the home page suddenly is seeing elevated response times, even though internal monitoring has reported no issues or changes.

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

  A. Cryptojacking
  B. Human error
  C. DDoS
  D. Phishing
  C. DDoS

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  Explanation

  Elevated response times without reported issues or changes internally could indicate a Distributed Denial of Service (DDoS) attack, where multiple systems flood the bandwidth or resources of a targeted system, usually one or more web servers.

  References:

  CompTIA Security+ Guide to Network Security Fundamentals by Mark Ciampa.

• Question 465:

  At the beginning of every month, new marketing materials are uploaded to the cloud server for sales employees to use. At the same time, other users report that their access is sluggish, and the system is almost unusable.

  Which of the following scaling approaches should be applied to remedy this issue?

  A. Scheduled
  B. Load
  C. Event
  D. Managed
  A. Scheduled

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  Explanation

  A scheduled scaling approach adds resources in anticipation of a known, recurring workload increase.

  Since uploads always occur at the beginning of the month and cause system slowness, scheduling additional capacity during that period resolves the performance issue.

• Question 466:

  A cloud service provider just launched a new serverless service that is compliant with all security regulations.

  A company deployed its code using the service, and the company's application was hacked due to leaked credentials.

  Which of the following is responsible?

  A. Customer
  B. Cloud service provider
  C. Hacker
  D. Code repository
  A. Customer

• Question 467:

  Which of the following storage types should be used to provide the highest IOPS?

  A. Immutable
  B. HDD
  C. All flash
  D. Block
  C. All flash

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  Explanation

  All-flash storage delivers the highest IOPS because solid-state drives provide significantly faster read/write operations compared to other storage types.

• Question 468:

  Which of the following refers to the idea that data should stay within certain borders or territories?

  A. Data classification
  B. Data retention
  C. Data sovereignty
  D. Data ownership
  C. Data sovereignty

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  Explanation

  Data sovereignty refers to the concept that data is subject to the laws and governance structures within the nation it is collected or stored. It implies that regardless of where a company's data is stored, the data must comply with the laws of the country where it is physically located.

  References:

  The principle of data sovereignty is a critical consideration in international cloud services and is included in the governance, risk, and compliance domain of CompTIA Cloud+.

• Question 469:

  A company implements a web farm with 100 servers behind an application load balancer. During scaling events, new web servers that are placed in service have not loaded all their modules, which causes some requests to the web farm to fail.

  Which of the following should the cloud engineer implement to address the scaling issue?

  A. Instance warm-up
  B. Scheduled scaling
  C. Event-based scaling
  D. Load balancer pass through
  A. Instance warm-up

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  Explanation

  Implementing an instance warm-up period can address the issue of new web servers not having all modules loaded during scaling events. This warm-up period allows new instances to fully initialize and start serving traffic only when they are ready, preventing failed requests.

  References:

  Scaling strategies and their operational impact, including the concept of instance warm-up, are covered under cloud infrastructure management in the CompTIA Cloud+ curriculum.

• Question 470:

  A healthcare provider's regulatory requirements include keeping patient data confidential, unaltered, retained for a minimum of five years, and backed up to a bucket in the cloud.

  Which of the following methods meets these requirements?

  A. Object Lock
  B. Daily full backup
  C. Data replication
  D. Bulk recovery
  A. Object Lock

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  Explanation

  Object Lock prevents stored data from being modified or deleted for a specified retention period. This helps maintain data confidentiality and integrity while ensuring records are retained for the required minimum of five years. When used with cloud storage buckets, it provides immutable protection that supports regulatory compliance and backup retention requirements.