CompTIA A+ Core 1 (220-1201) practice questions

222 free questions with answers and explanations.

201.A large enterprise is transitioning its legacy applications to a virtualized environment. The IT department wants to ensure that each virtual machine (VM) is isolated from other VMs on the same physical host to prevent security breaches and performance interference. What fundamental virtualization concept addresses this requirement?Virtualization and Cloud Computing
202.A systems administrator is configuring a new virtual machine (VM) for a critical database server. The administrator needs to ensure that the VM can achieve maximum disk I/O performance and minimize latency. Which type of virtual disk allocation should be chosen for this purpose?Virtualization and Cloud Computing
203.An organization uses a cloud provider for its development and testing environments. Developers frequently need to spin up new virtual machines, configure them with specific software, and then tear them down after testing. They want a solution that allows them to quickly provision and de-provision these resources without manual intervention, using a self-service portal. What characteristic of cloud computing does this scenario describe?Virtualization and Cloud Computing
204.A systems administrator needs to install a new operating system (OS) and applications on a virtual machine. After installing the OS, the VM's network connectivity is not working, and the display resolution is very low. The administrator checks the VM settings and confirms the virtual network adapter is configured correctly. What common set of tools or drivers is most likely missing from the newly installed VM?Virtualization and Cloud Computing
205.A small business is evaluating cloud services. They are particularly interested in a service that allows them to rent virtual servers, storage, and networking components, but they want to retain full control over the operating system, middleware, and applications installed on those resources. Which cloud service model aligns with these requirements?Virtualization and Cloud Computing
206.A company is experiencing performance issues on a virtualization host. After investigation, the administrator finds that several virtual machines are consuming significantly more CPU and RAM than initially allocated, leading to contention for physical resources. What term describes this situation where VMs are gradually demanding more resources than anticipated or required, often without being properly managed?Virtualization and Cloud Computing
207.A systems administrator is planning to implement a new virtualization cluster. The administrator needs to ensure that if a physical host fails, the virtual machines running on it can automatically restart on another available host without significant downtime. What feature of virtualization management platforms addresses this requirement?Virtualization and Cloud Computing
208.A development team is working on a new application and needs to ensure that the application functions identically across different environments, from a developer's laptop to staging and production servers, without worrying about underlying operating system differences or library conflicts. Which technology provides this level of portability and consistency while being more lightweight than full virtual machines?Virtualization and Cloud Computing
209.A company is experiencing rapid growth and needs to quickly scale its computing resources up or down based on fluctuating demand, without requiring manual intervention. Which characteristic of cloud computing directly addresses this need?Virtualization and Cloud Computing
210.A company is evaluating different cloud deployment models. They require a solution that offers the scalability and cost-effectiveness of public cloud resources for non-sensitive data and general applications, while keeping highly sensitive data and critical core applications on their existing on-premises infrastructure. What cloud deployment model would best meet these requirements?Virtualization and Cloud Computing
211.A technician is setting up a new server that will host multiple virtual machines. To ensure optimal performance and isolation for each VM, what type of hypervisor should be installed directly on the server's hardware?Virtualization and Cloud Computing
212.A small startup is looking for a cloud computing model that provides pre-built development environments, including operating systems, databases, and web servers, allowing their developers to focus solely on writing application code. Which cloud service model best fits their needs?Virtualization and Cloud Computing
213.A developer is building a new application that needs to be deployed rapidly across multiple environments (development, staging, production) with consistent dependencies and configurations. The developer wants to package the application and its dependencies into a lightweight, portable unit that can run reliably on any host. Which technology would be most suitable for this requirement?Virtualization and Cloud Computing
214.A cloud architect is designing a system for sensitive government data. The primary requirement is absolute physical and logical separation of infrastructure from any other customer, with dedicated hardware and network resources, even if it means higher costs. Which cloud model best satisfies this stringent isolation requirement?Virtualization and Cloud Computing
215.A company is considering implementing Virtual Desktop Infrastructure (VDI) for its workforce. One of the primary motivations is to enable employees to access their personalized desktop environments from any device, anywhere, while ensuring all corporate data remains securely within the data center. Which VDI component is responsible for brokering connections between end-user devices and their assigned virtual desktops?Virtualization and Cloud Computing
216.A small business is evaluating cloud services. They are particularly interested in a service model that provides them with virtual servers, storage, and networking, but they want to manage the operating systems, applications, and data themselves. Which cloud service model best fits their requirements?Virtualization and Cloud Computing
217.A cloud provider offers a service that allows customers to deploy and manage virtual machines, storage, and networking resources. The customer is responsible for installing and maintaining the operating systems, databases, and applications on these virtual machines. The cloud provider bills the customer based on the actual usage of these underlying computing resources. What characteristic of cloud computing does this billing model represent?Virtualization and Cloud Computing
218.An administrator is reviewing the performance of several virtual machines on a host. They notice that one VM, running a legacy application, frequently experiences high CPU utilization and slow response times, even though the host's physical CPU resources appear underutilized overall. This VM's virtual CPU (vCPU) count is set to 1. What is a common virtualization best practice to potentially improve the performance of this CPU-bound VM without overprovisioning?Virtualization and Cloud Computing
219.A system administrator is configuring a new virtual machine for a critical database server. The host machine has 128GB of RAM. If the database VM requires 32GB of RAM, and the hypervisor itself consumes 4GB, what is the maximum amount of RAM that could be allocated to other virtual machines on this host, assuming no overcommitment?Virtualization and Cloud Computing
220.A company is planning to deploy a new application that will process sensitive customer data. They need to ensure that the application's environment is completely isolated from other applications running on the same physical server, including its operating system, libraries, and network configuration. Which virtualization technology provides the most complete isolation for each application instance, essentially acting like a separate physical machine?Virtualization and Cloud Computing
221.A company requires a cloud solution that maintains strict data sovereignty and compliance with specific industry regulations, meaning all data must remain within their physical control and on their premises. Which cloud deployment model would be most appropriate?Virtualization and Cloud Computing
222.A network administrator is configuring a new firewall to protect the internal network. The administrator needs to ensure that only secure web traffic is allowed to pass through to an internal server. Which TCP port should be explicitly opened for this service?Networking