CompTIA A+ Core 1 Practice Questions: Virtualization and Cloud Computing

11 free, exam-style CompTIA A+ Core 1 (220-1201) practice questions covering Virtualization and Cloud Computing, each with the correct answer and an explanation. Start a timed exam below, or scroll on to read through the questions.

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Virtualization and Cloud Computing practice questions

Answers and explanations are shown. Take the timed exam above to test yourself first.

Q1. Which cloud characteristic describes the ability of cloud computing resources to scale up or down automatically based on demand, without manual intervention?

  • A.Shared resources
  • B.Metered utilization
  • C.Rapid elasticity✓ Correct
  • D.High availability
Explanation: Rapid elasticity is a key cloud characteristic that means computing resources can be quickly and automatically provisioned, scaled up, or scaled down to meet fluctuating demands, ensuring optimal performance and cost efficiency. Learn more.

Q2. Which cloud computing deployment model combines two or more distinct cloud infrastructures (e.g., private and public) that remain unique entities but are bound together by standardized technology, enabling data and application portability?

  • A.Private cloud
  • B.Public cloud
  • C.Hybrid cloud✓ Correct
  • D.Community cloud
Explanation: A hybrid cloud combines elements of both public and private clouds, allowing organizations to leverage the scalability of public clouds while maintaining sensitive data or critical applications in a private environment. Objective 4.1 covers 'Common cloud models' including 'Hybrid cloud'. Learn more.

Q3. In software-defined networking, which plane makes centralized forwarding decisions while switches carry out those decisions?

  • A.Data plane
  • B.Power plane
  • C.Presentation plane
  • D.Control plane✓ Correct
Explanation: The SDN control plane determines forwarding policy and programs network devices, while the data plane forwards packets according to those rules. Learn more.

Q4. A cloud provider hosts several customers on shared physical infrastructure while keeping each customer's data logically separated. Which concept is demonstrated?

  • A.Multitenancy✓ Correct
  • B.Air gapping
  • C.Single tenancy
  • D.Local-only computing
Explanation: Multitenancy allows multiple customers to share provider infrastructure while maintaining logical isolation between their workloads and data. Learn more.

Q5. An organization hosts employee desktop environments centrally and streams the interface to thin clients. Which solution is being used?

  • A.NAS
  • B.VDI✓ Correct
  • C.SAN
  • D.VLAN
Explanation: Virtual desktop infrastructure hosts desktop operating systems centrally and delivers users a remote desktop session from endpoint devices. Learn more.

Q6. What is the primary purpose of client-side virtualization?

  • A.To host large-scale enterprise applications in a data center
  • B.To allow a single physical desktop computer to run multiple operating systems simultaneously✓ Correct
  • C.To provide on-demand software applications over the internet
  • D.To manage and secure mobile devices remotely
Explanation: Client-side virtualization (e.g., using VMware Workstation, Oracle VirtualBox, or Hyper-V on Windows Pro) allows a user to run one or more guest operating systems within virtual machines on their local computer. Learn more.

Q7. Which of the following cloud computing characteristics describes the ability to rapidly provision and release resources, often automatically, to match demand?

  • A.Measured service
  • B.Broad network access
  • C.Rapid elasticity / Scalability✓ Correct
  • D.Resource pooling
Explanation: Rapid elasticity allows cloud resources to be scaled up or down quickly and automatically in response to changing workload demands. Learn more.

Q8. What is the primary advantage of using a Type 2 hypervisor over a Type 1 hypervisor for a typical home user?

  • A.Better performance for virtual machines
  • B.Easier installation and management on an existing operating system✓ Correct
  • C.Direct hardware access for guest OS
  • D.Lower cost of licensing
Explanation: Type 2 hypervisors (e.g., VirtualBox, VMware Workstation Player) are installed as applications on top of an existing host OS, making them easier for home users to set up and manage for running occasional VMs. Learn more.

Q9. Which of the following is a key benefit of using client-side virtualization for a software developer?

  • A.Reduced hardware costs for their primary workstation
  • B.Ability to test applications on multiple operating systems without needing separate physical machines✓ Correct
  • C.Guaranteed higher application performance compared to running natively
  • D.Simplified software licensing management
Explanation: Client-side virtualization allows developers to create and run VMs with different OS versions (e.g., various Windows, Linux, macOS versions) on a single machine, facilitating testing and development for diverse environments. Learn more.

Q10. What is the primary purpose of enabling Intel VT-x or AMD-V virtualization technology features in a computer's BIOS/UEFI settings?

  • A.To improve graphics performance for gaming
  • B.To enable faster network communication speeds
  • C.To provide hardware-level support for hypervisors to run virtual machines efficiently✓ Correct
  • D.To enhance the security of the operating system against malware
Explanation: Intel VT-x (for Intel CPUs) and AMD-V (for AMD CPUs) are hardware virtualization extensions. Enabling them in the BIOS/UEFI allows hypervisors (like VMware, VirtualBox, Hyper-V) to utilize these CPU features for more efficient and performant operation of virtual machines. Learn more.

Q11. A company wants to migrate its physical servers to the cloud. They require full control over the operating systems, installed applications, and all server configurations. Which cloud service model BEST meets these requirements?

  • A.SaaS (Software as a Service)
  • B.PaaS (Platform as a Service)
  • C.IaaS (Infrastructure as a Service)✓ Correct
  • D.DaaS (Desktop as a Service)
Explanation: IaaS (Infrastructure as a Service) provides the fundamental building blocks for cloud IT. This includes access to computing resources like virtual machines, storage, and networks. With IaaS, the customer manages the operating system, applications, and data, giving them the highest level of control compared to PaaS or SaaS. Learn more.

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