CompTIA CompTIA Certifications CV0-004 Questions & Answers

• Question 261:

  Which of the following network types allows the addition of new features through the use of network function virtualization?

  A. Local area network

  B. Wide area network

  C. Storage area network

  D. Software-defined network

  Correct Answer: D

  A Software-Defined Network (SDN) is a network approach that allows the addition of new features through software configurations rather than hardware updates, making use of network function virtualization (NFV). NFV decouples network functions from proprietary hardware appliances, so they can run in software, which aligns with the flexibility offered by SDN. References: CompTIA Cloud+ Study Guide (V0-004) - Chapter on Network Management

• Question 262:

  Which of the following will best reduce the cost of running workloads while maintaining the same performance? (Select two).

  A. Instance size

  B. Tagging

  C. Reserved resources model

  D. Spot instance model

  E. Pay-as-you-go model

  F. Dedicated host model

  Correct Answer: CD

  The Reserved resources model offers cost savings for committed use over a long term, which can reduce costs while maintaining performance for predictable workloads. The Spot instance model allows users to take advantage of unused capacity at lower prices, offering significant cost savings, though with the possibility of instances being terminated when demand rises. Both models can be strategically used to optimize costs without compromising performance.

• Question 263:

  Which of the following is used to deliver code quickly and efficiently across the development, test, and production environments?

  A. Snapshot

  B. Container image

  C. Serverless function

  D. VM template

  Correct Answer: B

  A container image is used to deliver code quickly and efficiently across the development, test, and production environments. Container images are lightweight, standalone, executable software packages that include everything needed to run a piece of software, including the code, runtime, system tools, libraries, and settings. References: CompTIA Cloud+ Study Guide (V0-004) - Chapter on Cloud Deployment Methods

• Question 264:

  A cloud engineer is running a latency-sensitive workload that must be resilient and highly available across multiple regions. Which of the following concepts best addresses these requirements?

  A. Cloning

  B. Clustering

  C. Hardware passthrough

  D. Stand-alone container

  Correct Answer: B

  Clustering refers to the use of multiple servers/computers to form what appears to be a single system. This concept is key for achieving high availability and resilience, especially for latency-sensitive workloads. By distributing the workload across a cluster that spans multiple regions, the system can continue to operate even if one or more nodes fail, thus maintaining performance and availability. References: CompTIA Cloud+ Guide to Cloud Computing (ISBN: 978-1-64274282-2)

• Question 265:

  Which of the following is a difference between a SAN and a NAS?

  A. A SAN works only with fiber-based networks.

  B. A SAN works with any Ethernet-based network.

  C. A NAS uses a faster protocol than a SAN

  D. A NAS uses a slower protocol than a SAN.

  Correct Answer: D

  A NAS (Network Attached Storage) typically uses file-level protocols such as NFS or SMB, which are generally considered slower and less efficient than the block-level protocols used by SANs (Storage Area Networks), such as iSCSI or Fibre Channel. SANs are designed for high performance and low latency, making them more suitable for applications requiring fast and efficient storage access.

• Question 266:

  Between 11:00 a.m. and 1:00 p.m. on workdays, users report that the sales database is either not accessible, sluggish, or difficult to connect to. A cloud administrator discovers that during the impacted time, all hypervisors are at capacity. However, when 70% of the users are using the same database, those issues are not reported. Which of the following is the most likely cause?

  A. Oversubscription

  B. Resource allocation

  C. Sizing issues

  D. Service quotas

  Correct Answer: A

  The most likely cause of accessibility and performance issues during specific times is oversubscription. This happens when more users are trying to access the database than the hypervisors can handle, due to their resources being allocated to more virtual machines or processes than they can efficiently support.References: Resource management concepts such as avoiding oversubscription are covered under the Management and Technical Operations domain of the CompTIA Cloud+ exam objectives.

• Question 267:

  A manager wants information about which users signed in to a certain VM during the past month. Which of the following can the cloud administrator use to obtain this information?

  A. Retention

  B. Alerting

  C. Aggregation

  D. Collection

  Correct Answer: D

  To obtain information about which users signed in to a certain VM during the past month, a cloud administrator can use log collection. Log collection involves gathering and storing logs from various sources, including VMs, to provide historical data on system access and activity, which can then be analyzed to identify user login instances.References: The CompTIA Cloud+ certification emphasizes the importance of monitoring and visibility in cloud environments, which includes log collection and analysis as key components of operational management and security monitoring.

• Question 268:

  A cross-site request forgery vulnerability exploited a web application that was hosted in a public laaS network. A security engineer determined that deploying a WAF in blocking mode at a CDN would prevent the application from being exploited again. However, a week after implementing the WAF, the application was exploited again. Which of the following should the security engineer do to make the WAF control effective?

  A. Configure the DDoS protection on the CDN.

  B. Install endpoint protection software on the VMs

  C. Add an ACL to the VM subnet.

  D. Deploy an IDS on the laaS network.

  Correct Answer: C

  After a WAF deployment fails to prevent an exploit, adding an Access Control List (ACL) to the Virtual Machine (VM) subnet can be an effective control. ACLs provide an additional layer of security by explicitly defining which traffic can or cannot enter a network segment. By setting granular rules based on IP addresses, protocols, and ports, ACLs help to restrict access to resources, thereby mitigating potential exploits and enhancing the security of the IaaS network.References: CompTIA Cloud+ materials cover governance, risk, compliance, and security for the cloud, including the implementation of network security controls like ACLs, to protect cloud environments from unauthorized access and potential security threats.

• Question 269:

  A banking firm's cloud server will be decommissioned after a successful proof of concept using mirrored data. Which of the following is the best action to take regarding the storage used on the decommissioned server?

  A. Keep it temporarily.

  B. Archive it.

  C. Delete it.

  D. Retain it permanently

  Correct Answer: B

  When a cloud server is decommissioned after a proof of concept, the best action to take regarding the storage used on the server is to archive it. Archiving ensures that the data is kept in a less accessible but secure storage service, which may be required for regulatory or compliance reasons, especially for a banking firm.References: Data management strategies, including archiving decommissioned data, are covered in the CompTIA Cloud+ examination objectives, particularly within the domain of management and technical operations.

• Question 270:

  A cloud solutions architect needs to have consistency between production, staging, and development environments. Which of the following options will best achieve this goal?

  A. Using Terraform templates with environment variables

  B. Using Grafana in each environment

  C. Using the ELK stack in each environment

  D. Using Jenkins agents in different environments

  Correct Answer: A

  Terraform templates with environment variables can ensure consistency across different environments such as production, staging, and development. Terraform allows for infrastructure as code, which can be used to define and maintain

  infrastructure with consistency.

  References: CompTIA Cloud+ Certification Study Guide (V0-004) by Scott Wilson and Eric Vanderburg.