CompTIA CompTIA Certifications CV0-004 Questions & Answers

• Question 71:

  A company uses containers to implement a web application. The development team completed internal testing of a new feature and is ready to move the feature to the production environment.

  Which of the following deployment models would best meet the company's needs while minimizing cost and targeting a specific subset of its users?

  A. Canary

  B. Blue-green

  C. Rolling

  D. In-place

  Correct Answer: A

  The canary deployment model is an approach where a new feature or service is rolled out to a small subset of users before being deployed widely. This method allows the company to test the impact of the new feature in the production environment with a limited scope, minimizing risk and potential cost implications if issues arise. This approach contrasts with blue-green deployments, which involve switching between two identical environments; rolling deployments, which gradually update all instances; and in- place deployments, which update the current environment. The canary model is particularly suited for targeting specific user groups and gathering feedback before a full rollout.

• Question 72:

  A company is required to save historical data for seven years. A cloud administrator implements a script that automatically deletes data older than seven years.

  Which of the following concepts best describes why the historical data is being deleted?

  A. End of life

  B. Data loss prevention

  C. Cost implications

  D. Tiered storage for archiving

  Correct Answer: A

  Deleting historical data older than seven years as described is an example of data end of life (EOL) policies in action. These policies dictate when data is no longer needed or relevant and should be securely disposed of, often for compliance,

  legal, or cost- saving reasons.

  References: CompTIA Cloud+ resources and data management strategies

• Question 73:

  A cloud server needs to automatically allocate more resources during sudden peak times. This allocation does not need to occur in regular intervals.

  Which of the following scaling approaches should be used?

  A. Event

  B. Manual

  C. Trending

  D. Scheduled

  Correct Answer: A

  Event-based scaling is designed to allocate more resources automatically in response to specific events, such as sudden peak times that are not regular or predictable. This type of scaling ensures that resources are available when needed

  without the need to schedule them in advance or adjust them manually.

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

• Question 74:

  A cloud engineer needs to migrate an application from on premises to a public cloud. Due to timing constraints, the application cannot be changed prior to migration.

  Which of the following migration strategies is best approach for this use case?

  A. Retire

  B. Rearchitect

  C. Refactor

  D. Rehost

  Correct Answer: D

  Rehosting, often referred to as "lift-and-shift," is the process of migrating an application or workload to the cloud without modifying it. This approach is suitable when there are timing constraints that prevent making changes to the application prior to migration. Rehosting can be the quickest migration strategy since it involves moving the existing applications to the cloud with minimal changes. References: CompTIA Cloud+ resources and cloud migration strategies

• Question 75:

  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

  Correct Answer: C

  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 76:

  Which of the following cloud deployment models is the best way to replicate a workload non-disruptively between on-premises servers and a public cloud?

  A. Public

  B. Community

  C. Private

  D. Hybrid

  Correct Answer: D

  A hybrid cloud deployment model is the best way to replicate workloads non- disruptively between on-premises servers and a public cloud. This model integrates on- premises infrastructure, or private clouds with public clouds, allowing data and applications to be shared between them. References: CompTIA Cloud+ Study Guide (V0-004) - Chapter on Cloud Deployment Models

• Question 77:

  A cloud administrator deploys new VMs in a cluster and discovers they are getting IP addresses in the range of 169.254.0.0/16. Which of the following is the most likely cause?

  A. The scope has been exhausted.

  B. The network is overlapping.

  C. The VLAN is missing.

  D. The NAT is Improperly configured.

  Correct Answer: A

  IP addresses in the range of 169.254.0.0/16 are Automatic Private IP Addressing (APIPA) addresses, which devices assign themselves when they are configured to obtain an IP automatically but are unable to reach a DHCP server to get one. The most likely cause for VMs in a cluster to receive APIPA addresses is the exhaustion of the DHCP scope, meaning there are no more available IP addresses in the DHCP range to be assigned.

• Question 78:

  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

  Correct Answer: A

  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 79:

  A company's content management system (CMS) service runs on an laaS cluster on a public cloud. The CMS service is frequently targeted by a malicious threat actor using DDoS.

  Which of the following should a cloud engineer monitor to identify attacks?

  A. Network flow logs

  B. Endpoint detection and response logs

  C. Cloud provider event logs

  D. Instance syslog

  Correct Answer: A

  To identify DDoS attacks against a CMS service, a cloud engineer should monitor network flow logs. These logs provide data about the IP traffic going to and from network interfaces in a public cloud, which is essential for detecting the increased traffic volumes typically associated with DDoS attacks. References: CompTIA Cloud+ Study Guide (V0-004) - Chapter on Security in the Cloud

• Question 80:

  Which of the following application migration strategies will best suit a customer who wants to move a simple web application from an on-premises server to the cloud?

  A. Rehost

  B. Rearchitect

  C. Refactor

  D. Retain

  Correct Answer: A

  Rehosting, often referred to as a "lift and shift" strategy, is the best suit for a customer who wants to move a simple web application from an on-premises server to the cloud. It involves moving the application to the cloud without making

  significant changes, which can be a quick and cost-effective migration approach for straightforward applications.

  References: The various cloud migration strategies, including rehosting, are part of the knowledge base for cloud migration in the CompTIA Cloud+ certification.