CompTIA CV0-003 Online Practice Questions and Exam Preparation

CompTIA CV0-003 Online Questions & Answers

• Question 221:

  A cloud administrator is working in a secure government environment. The administrator needs to implement corrective action due to recently identified security issue on the OS of a VM that is running a facility-management application in a cloud environment. The administrator needs to consult the application vendor, so it might take some time to resolve the issue. Which of the following is the FIRST action the administrator should take while working on the resolution?

  A. Shut down the server.
  B. Upgrade the OS
  C. Update the risk register.
  D. Raise a problem ticket.
  D. Raise a problem ticket.

  ---

  Explanation

  Raising a problem ticket is the first action that the administrator should take while working on the resolution of a security issue on the OS of a VM that is running a facility-management application in a cloud environment. A problem ticket is a record of an incident or issue that affects or may affect the normal operation or performance of a system or service. A problem ticket contains information such as description, priority, status, root cause, solution, etc., that can help to track and manage the problem resolution process. Raising a problem ticket can help to communicate and document the security issue, assign responsibility and accountability, monitor progress and performance, and prevent recurrence.

• Question 222:

  A cloud administrator is planning to migrate a globally accessed application to the cloud.

  Which of the following should the cloud administrator implement to BEST reduce latency for all users?

  A. Regions
  B. Auto-scaling
  C. Clustering
  D. Cloud bursting
  A. Regions

  ---

  Explanation

  Regions are geographical locations or areas where cloud service providers have data centers or facilities that host their cloud resources or services. Regions can help reduce latency for all users when deploying a globally accessed application to the cloud, as they can enable faster and closer access to the cloud resources or services based on the user's physical location. Regions can also improve performance and availability, as they can provide redundancy and load balancing by distributing the workload across multiple locations.

  References: CompTIA Cloud+ Certification Exam Objectives, page 15, section 2.8

• Question 223:

  A company would like to migrate its current on-premises workloads to the public cloud. The current platform requires at least 80 instances running at all times to work properly. The company wants the workload to be highly available, even if the cloud provider loses one region due to a catastrophe, and the costs to be kept to a minimum. Which of the following strategies should the company implement?

  A. Create /25 subnets in two regions and run 80 instances on each one.
  B. Create /26 subnets in two regions and run 40 instances on each one.
  C. Create /26 subnets in three regions and run 40 instances on each one
  D. Create /26 subnets in three regions and run 80 instances on each one.
  C. Create /26 subnets in three regions and run 40 instances on each one

  ---

  Explanation

  1.at least 80 instances running at all times to work 2.wants the workload to be highly available, even if the cloud provider loses one region due to a catastrophe 3.costs to be kept to a minimum

  The choice of /26 subnets allows for up to 64 IP addresses, which is sufficient for running 40 instances in each region - Respect al 3 requiraments

  By running 40 instances in each region, the company can achieve the desired level of availability while keeping costs lower - So, we have cost optimization !

  By distributing the workload across three regions, the company ensures redundancy and fault tolerance. They want AT LEAST 80 instances.

• Question 224:

  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

  ---

  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 225:

  A company with a worldwide presence wants to improve the user experience for its website. Which of the following can a systems administrator implement to improve download speeds and latency for the end users?

  A. A CDN solution
  B. An MPLS connection between datacenters
  C. A DNS round robin
  D. A site-to-site VPN between datacenters
  A. A CDN solution

  ---

  Explanation

• Question 226:

  A cloud administrator is troubleshooting a highly available web application running within three containers behind a Layer 7 load balancer with a WAF inspecting all traffic. The application frequently asks the users to log in again even when the session timeout has not been reached. Which of the following should the cloud administrator configure to solve this issue?

  A. Firewall outbound rules
  B. Firewall inbound rules
  C. Load balancer certificates
  D. Load balancer stickiness
  E. WAF transaction throttling
  D. Load balancer stickiness

  ---

  Explanation

  Load balancer stickiness is what the cloud administrator should configure to solve the issue of the application frequently asking the users to log in again even when the session timeout has not been reached for a highly available web application running within three containers behind a Layer 7 load balancer with a WAF inspecting all traffic. Load balancer stickiness is a feature that allows customers to maintain user sessions or connections with the same server or node that provides a service or function, such as a web application, database, etc., even when there are multiple servers or nodes behind a load balancer. Load balancer stickiness can solve the issue by providing benefits such as:

  Consistency: Load balancer stickiness can provide consistency by ensuring that users receive the same service or function from the same server or node throughout their session or connection, without any changes or variations. Performance: Load balancer stickiness can provide performance by reducing the latency or overhead of switching between different servers or nodes during a session or connection, which may cause delays or errors.

  Security: Load balancer stickiness can provide security by preserving and protecting user authentication or authorization information on the same server or node during a session or connection, without exposing or transferring it to other servers or nodes.

  https://docs.aws.amazon.com/elasticloadbalancing/latest/application/application-load-balancers.html#sticky-sessions

• Question 227:

  An administrator is securing a private cloud environment and wants to ensure only approved systems can connect to switches. Which of the following would be MOST useful to accomplish this task?

  A. VLAN
  B. NIPS
  C. WAF
  D. NAC
  D. NAC

  ---

  Explanation

  NAC (Network Access Control) is what the administrator should implement to ensure only approved systems can connect to switches in a private cloud environment. NAC is a security technique that controls and restricts access to network resources based on predefined policies or rules. NAC can verify and authenticate users or devices before granting them access to switches or other network devices. NAC can also enforce compliance and security standards on users or devices before allowing them to connect to switches.

  https://www.cisco.com/c/en/us/products/security/what-is-network-access-control-nac.html

• Question 228:

  A company recently subscribed to a SaaS collaboration service for its business users. The company also has an on-premises collaboration solution and would like users to have a seamless experience regardless of the collaboration solution being used.

  Which of the following should the administrator implement?

  A. LDAP
  B. WAF
  C. VDI
  D. SSO
  D. SSO

  ---

  Explanation

  Single sign-on (SSO) is a type of authentication mechanism that allows users to access multiple systems or applications with a single login credential. SSO can help users have a seamless experience regardless of the collaboration solution being used, as it can eliminate the need for multiple logins and passwords for different systems or applications. SSO can also improve user convenience, productivity, and security, as it can simplify the login process, reduce login errors, and enhance password management.

  References: CompTIA Cloud+ Certification Exam Objectives, page 14, section 2.7

• Question 229:

  A systems administrator has received an email from the virtualized environment's alarms indicating the memory was reaching full utilization. When logging in, the administrator notices that one out of a five-host cluster has a utilization of 500GB out of 512GB of RAM. The baseline utilization has been 300GB for that host. Which of the following should the administrator check NEXT?

  A. Storage array
  B. Running applications
  C. VM integrity
  D. Allocated guest resources
  B. Running applications

  ---

  Explanation

• Question 230:

  Which of the following should be enabled to reduce cloud compute costs when planning hardware capacity?

  A. Compression and deduplication on the object storage.
  B. Autoscaling with load balancing.
  C. Affinity settings per node.
  D. Lifecycle management on the data storage.
  B. Autoscaling with load balancing.

  ---

  Explanation

  B. Autoscaling with load balancing: Autoscaling adjusts resources based on demand, ensuring that unused compute capacity is released, reducing costs. Load balancing distributes traffic, preventing resource overuse.

  References:

  CompTIA Cloud+ CV0-003 Study Guide Chapter 18: Optimizing Cloud Environments.