CompTIA CV0-004 Online Practice Questions and Exam Preparation

CompTIA CV0-004 Online Questions & Answers

• Question 121:

  A company's man web application is no longer accessible via the internet. The cloud administrator investigates and discovers the application is accessible locally and only via an IP access. Which of the following was misconfigured?

  A. IP
  B. DHCP
  C. NAT
  D. DNS
  D. DNS

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  Explanation

  When a web application is accessible locally via an IP address but not via the internet, the issue likely lies with the Domain Name System (DNS). DNS is responsible for translating domain names into IP addresses. A misconfiguration in DNS records or failure in DNS resolution can prevent users from accessing the application through its domain name, even though the application itself is running and accessible via its direct IP address. References: In the CompTIA Cloud+ curriculum, understanding cloud concepts and networking fundamentals, including DNS, is crucial for troubleshooting and ensuring applications are accessible and perform optimally in cloud environments.

• Question 122:

  A list of CVEs was identified on a web server. The systems administrator decides to close the ports and disable weak TLS ciphers. Which of the following describes this vulnerability management stage?

  A. Scanning
  B. Identification
  C. Assessment
  D. Remediation
  D. Remediation

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  Explanation

  Closing the ports and disabling weak TLS ciphers as a response to a list of identified CVEs (Common Vulnerabilities and Exposures) describes the vulnerability management stage of 'remediation'. This stage involves taking actions to resolve vulnerabilities and mitigate potential risks.References: Vulnerability management stages, including remediation efforts, are a key aspect of the security measures discussed in CompTIA Cloud+.

• Question 123:

  A company has a web application running in an on-premises environment that needs to be migrated to the cloud. The company wants to implement a solution that maximizes scalability, availability, and security, while requiring no infrastructure administration.

  Which of the following services would be BEST to meet this goal?

  A. A PaaS solution
  B. A hybrid solution
  C. An laaS solution
  D. A SaaS solution
  A. A PaaS solution

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  Explanation

  A PaaS solution, or platform as a service, is a cloud computing service that provides a complete, ready-to-use, cloud-hosted platform for developing, running, maintaining and managing applications1. A PaaS solution would meet the company's goal of maximizing scalability, availability, and security, while requiring no infrastructure administration, because:

  Scalability: A PaaS solution can automatically scale up or down the resources needed to run the application based on the demand and traffic. The company does not need to worry about provisioning or managing servers, storage, network, or load balancers23. Availability: A PaaS solution can ensure high availability and reliability of the application by replicating it across multiple regions and zones. The company does not need to worry about backup, recovery, or failover23. Security: A PaaS solution can provide built-in security features such as encryption, authentication, authorization, and firewall. The company does not need to worry about installing or updating security patches or software23. No infrastructure administration: A PaaS solution can abstract away the underlying infrastructure and hardware from the company. The company only needs to focus on developing and deploying the application code and data. The PaaS provider takes care of the rest23.

  A hybrid solution (B) is a cloud computing service that combines on-premises and cloud resources. It may offer some benefits such as flexibility and cost optimization, but it would not meet the company's goal of requiring no infrastructure administration. The company would still need to manage and maintain the on-premises part of the solution4. An IaaS solution ? or infrastructure as a service, is a

• Question 124:

  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

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  Explanation

• Question 125:

  A company has decided to adopt a microservices architecture for its applications that are deployed to the cloud. Which of the following is a major advantage of this type of architecture?

  A. Increased security
  B. Simplified communication
  C. Reduced server cost
  D. Rapid feature deployment
  D. Rapid feature deployment

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  Explanation

  A major advantage of adopting a microservices architecture is rapid feature deployment. Microservices allow for independent development, deployment, and scaling of individual service components, enabling teams to bring new features to market more quickly and efficiently compared to monolithic architectures.References: The CompTIA Cloud+ certification covers cloud design aspects, including architectural models like microservices, emphasizing their role in facilitating agile development practices and rapid feature release cycles in cloud environments.

• Question 126:

  A cloud administrator used a deployment script to recreate a number of servers hosted in a public-cloud provider_ However, after the script completes, the administrator receives the following error when attempting to connect to one of the servers Via SSH from the administrators workstation: CHANGED.

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

  A. The DNS records need to be updated
  B. The cloud provider assigned a new IP address to the server.
  C. The fingerprint on the server's RSA key is different
  D. The administrator has not copied the public key to the server.
  C. The fingerprint on the server's RSA key is different

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  Explanation

  This error indicates that the SSH client has detected a change in the server's RSA key, which is used to authenticate the server and establish a secure connection. The SSH client stores the fingerprints of the servers it has previously connected to in a file called known_hosts, which is usually located in the ~/.ssh directory. When the SSH client tries to connect to a server, it compares the fingerprint of the server's RSA key with the one stored in the known_hosts file. If they match, the connection proceeds. If they do not match, the SSH client warns the user of a possible man-in-the-middle attack or a host key change, and aborts the connection. The most likely cause of this error is that the deployment script has recreated the server with a new RSA key, which does not match the one stored in the known_hosts file. This can happen when a server is reinstalled, cloned, or migrated. To resolve this error, the administrator needs to remove or update the old fingerprint from the known_hosts file, and accept the new fingerprint when connecting to the server again. Alternatively, the administrator can use a tool or service that can synchronize or manage the RSA keys across multiple servers, such as AWS Key Management Service (AWS KMS) 1, Azure Key Vault 2, or HashiCorp Vault 3.

• Question 127:

  A project team identifies tasks that can be decomposed into smaller deliverables while reviewing planning documents. Which document should be updated first?

  A. Risk assessment
  B. Preliminary scope statement
  C. Work breakdown structure
  D. Milestone chart
  C. Work breakdown structure

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  Explanation

• Question 128:

  A company has been using a CRM application that was developed in-house and is hosted on local servers. Due to internal changes, the company wants to migrate the application to the cloud without having to manage the infrastructure.

  Which of the following services should the company consider?

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

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  Explanation

• Question 129:

  A cloud engineer is designing a high-performance computing cluster for proprietary software. The software requires low network latency and high throughput between cluster nodes.

  Which of the following would have the greatest impact on latency and throughput when designing the HPC infrastructure?

  A. Node placement
  B. Node size
  C. Node NIC
  D. Node OS
  A. Node placement

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  Explanation

  Node placement is critical in high-performance computing (HPC) clusters where low network latency and high throughput are required. Proper placement of nodes within the network infrastructure, including proximity to each other and to key network components, can significantly reduce latency and increase throughput. Ensuring that nodes are physically close and well-connected can facilitate faster data transfer rates between them.

  References: CompTIA Cloud+ Certification Study Guide (Exam CV0-004) by Scott Wilson and Eric Vanderburg

• Question 130:

  A cloud engineer wants to run a script that increases the volume storage size if it is below 100GB. Which of the following should the engineer run?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  A. Option A

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  Explanation

  The correct script is Option A, which uses a conditional test to check if the volume size is less than 100GB. If it is, then it performs a resize operation; otherwise, it outputs a message indicating the volume is already the desired size.

  References: CompTIA Cloud+ Study Guide (Exam CV0-004) - Chapter on Automation