220-1101 Virtualization and Cloud Computing Practice Test 11 — 15 Questions

Question 1

A company wants to migrate its critical applications to the cloud while guaranteeing that physical hardware resources are dedicated to its virtual machines to avoid performance interference from other tenants. The company also needs full control over the operating system and applications. Which of the following BEST describes the cloud model that meets these requirements?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Infrastructure as a Service (IaaS) with dedicated hosts. Infrastructure as a Service (IaaS) with dedicated hosts provides physically isolated hardware resources for the virtual machines, ensuring no performance interference from other tenants. The customer retains full control over the operating system and applications, which aligns with the requirement for dedicated resources and administrative access.

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Public cloud with multi-tenant infrastructure

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Platform as a Service (PaaS)

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Hybrid cloud deployment

Question 2

A systems administrator is planning to deploy a critical application to the cloud. The application requires dedicated physical hardware to meet compliance standards. The administrator also needs full control over the operating system, including kernel configurations. Which cloud service model BEST meets these requirements?

Accepted Answer

Infrastructure as a Service (IaaS) with dedicated hosts. Infrastructure as a Service (IaaS) with dedicated hosts is the correct choice because it provides the administrator with dedicated physical hardware, ensuring compliance with standards that require no multi-tenancy, and full control over the operating system, including kernel configurations. Unlike shared IaaS, dedicated hosts guarantee that the underlying physical server is not shared with other tenants, meeting strict compliance and performance requirements.

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Platform as a Service (PaaS)

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Software as a Service (SaaS)

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Function as a Service (FaaS)

Question 3

A company needs to migrate its customer relationship management (CRM) application to the cloud. The application runs on a custom operating system, and the IT team requires full administrative control over the OS and all installed software. Additionally, compliance regulations mandate that the underlying physical servers must be dedicated solely to the company's workloads. Which cloud service model BEST meets these requirements?

Accepted Answer

Infrastructure as a Service (IaaS) with dedicated hosts. Infrastructure as a Service (IaaS) with dedicated hosts provides full administrative control over the custom operating system and all installed software, while ensuring that the physical servers are not shared with other tenants. This model meets the compliance requirement for dedicated hardware because the cloud provider allocates specific physical servers exclusively to the company, giving the IT team the same level of control as on-premises infrastructure.

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Platform as a Service (PaaS)

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Software as a Service (SaaS)

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Public cloud with shared servers

Question 4

A company runs a latency-sensitive application on a local server. To handle occasional traffic spikes, the company needs to expand compute resources temporarily without moving the entire application to the cloud. The application runs on a single operating system instance and cannot be easily containerized. Which of the following cloud deployment models BEST allows the company to meet this requirement?

Accepted Answer

Hybrid cloud. A hybrid cloud model allows the company to keep the latency-sensitive application on a local private cloud or on-premises server while temporarily bursting compute resources to a public cloud during traffic spikes. This is achieved through cloud bursting, where additional virtual machines or instances are provisioned in the public cloud and connected to the on-premises environment, without requiring the entire application to be migrated or containerized. The application runs on a single OS instance, so extending resources via hybrid cloud avoids the need for re-architecture while handling peak loads.

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Community cloud

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Public cloud

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Private cloud

Question 5

A company uses a public cloud IaaS provider to host a web application. The application experiences occasional spikes in traffic. The cloud provider offers a service that automatically adds or removes virtual machine instances based on CPU utilization. This is an example of which cloud characteristic?

Accepted Answer

Rapid elasticity. The scenario describes a cloud service that automatically scales virtual machine instances up or down in response to CPU utilization spikes. This ability to provision and release resources quickly and automatically to match demand is the defining characteristic of rapid elasticity, which allows resources to appear unlimited to the consumer and scale elastically based on workload.

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Measured service

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On-demand self-service

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Resource pooling

Question 6

A systems administrator needs to run multiple virtual machines on a single physical server for a high-performance computing environment. The administrator requires the lowest possible overhead and direct access to hardware resources. Which of the following should be installed on the server?

Accepted Answer

Type 1 hypervisor. A Type 1 hypervisor (bare-metal hypervisor) runs directly on the physical hardware without a host operating system, providing the lowest possible overhead and direct access to hardware resources such as CPU, memory, and I/O. This makes it ideal for high-performance computing (HPC) environments where minimal latency and maximum resource efficiency are critical.

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Type 2 hypervisor

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Cloud computing software

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Server operating system

Question 7

A systems administrator needs to run multiple virtual machines on a single physical server for a high-performance computing workload. The administrator requires the lowest possible overhead and direct access to hardware resources such as the CPU and memory. Which of the following should the administrator install on the server?

Accepted Answer

A Type 1 hypervisor such as VMware ESXi. A Type 1 hypervisor (bare-metal) like VMware ESXi runs directly on the server hardware without a host OS, providing the lowest possible overhead and direct access to CPU and memory resources. This is essential for high-performance computing workloads where minimal latency and maximum hardware utilization are required.

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A Type 2 hypervisor such as VirtualBox

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A containerization platform such as Docker

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An emulation software such as QEMU without KVM

Question 8

A company is migrating a legacy application to the cloud. The application requires a specific operating system configuration and the IT team needs full administrative control over the operating system, including the ability to install custom software and configure kernel settings. The company wants to avoid upfront hardware costs and pay only for what they use. Which cloud service model BEST meets these requirements?

Accepted Answer

Infrastructure as a Service (IaaS). IaaS provides virtualized computing resources over the internet, granting full administrative control over the operating system, including kernel settings and custom software installation. This model eliminates upfront hardware costs by offering pay-as-you-go pricing, aligning with the requirement to avoid capital expenditure.

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Software as a Service (SaaS)

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Platform as a Service (PaaS)

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Desktop as a Service (DaaS)

Question 9

A company runs a private cloud with multiple virtualization hosts. To meet an SLA requirement, the IT administrator needs to ensure that if a physical host fails, the virtual machines running on that host are automatically restarted on another healthy host with minimal manual intervention. Which virtualization feature should the administrator implement?

Accepted Answer

High availability. High availability (HA) is the correct feature because it automatically detects a physical host failure and restarts the affected virtual machines on another healthy host within the cluster, meeting the SLA requirement for minimal manual intervention. HA relies on a heartbeat mechanism between hosts and a management platform (e.g., vSphere HA) to trigger the restart process without requiring user action.

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Load balancing

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Live migration

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Resource pooling

Question 10

A company wants to migrate its on-premises email system to the cloud. The IT team wants to avoid managing the underlying server hardware and email software, but they require the ability to configure custom email policies, create user accounts, and manage distribution groups. Which cloud service model best meets these requirements?

Accepted Answer

Software as a Service (SaaS). Software as a Service (SaaS) delivers a fully managed email application (e.g., Microsoft 365 Exchange Online) where the provider handles all underlying hardware, OS, and email software. The customer retains administrative control to configure custom email policies, create user accounts, and manage distribution groups via a web console or PowerShell, without any server or software maintenance.

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Infrastructure as a Service (IaaS)

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Platform as a Service (PaaS)

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On-premises deployment

Question 11

A company operates a private cloud for its internal applications. To handle seasonal traffic spikes, the company wants to automatically offload extra workload to a public cloud provider when the private cloud's utilization reaches 80%. Which of the following cloud concepts BEST describes this setup?

Accepted Answer

Hybrid cloud. The setup combines a private cloud (on-premises) with a public cloud provider to handle traffic spikes, which is the defining characteristic of a hybrid cloud. The automatic offloading of workloads when utilization reaches 80% is a classic example of cloud bursting, a key use case for hybrid cloud architectures. This model allows the company to maintain sensitive workloads on-premises while leveraging public cloud elasticity for peak demand.

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Community cloud

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Virtual Private Cloud

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Software as a Service

Question 12

A company wants to move its email system to the cloud. The IT team wants to avoid managing the underlying servers and email software but needs full administrative control over email settings, user accounts, and security policies. Which cloud service model should the company choose?

Accepted Answer

Software as a Service (SaaS). Software as a Service (SaaS) delivers the email application over the internet, with the provider managing the underlying servers, operating systems, and email software. This model allows the company to avoid server and software management while retaining full administrative control over email settings, user accounts, and security policies through the application's management interface. Examples include Microsoft 365 Exchange Online and Google Workspace.

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Infrastructure as a Service (IaaS)

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Platform as a Service (PaaS)

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Desktop as a Service (DaaS)

Question 13

A company is migrating its on-premises infrastructure to a cloud provider. The IT team needs full control over the operating system, the ability to install custom applications, and the ability to configure network settings such as firewalls and subnets. They want to avoid managing the physical hardware. Which cloud service model BEST meets these requirements?

Accepted Answer

Infrastructure as a Service (IaaS). Infrastructure as a Service (IaaS) provides virtualized computing resources over the internet, giving the IT team full control over the operating system, the ability to install custom applications, and the ability to configure network settings such as firewalls and subnets, while the cloud provider manages the physical hardware. This model abstracts the underlying hardware but exposes the virtual infrastructure, meeting all stated requirements.

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Software as a Service (SaaS)

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Platform as a Service (PaaS)

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Desktop as a Service (DaaS)

Question 14

A systems administrator is planning to virtualize several servers on a single physical host. The host has 64 GB of RAM and a 4-core CPU with hyper-threading (8 logical processors). The administrator needs to run four virtual machines (VMs), each requiring 2 vCPUs and 8 GB of RAM. The VMs will host a web server and a database server. Which virtualization technology benefit is being MOST directly utilized in this scenario?

Accepted Answer

Resource pooling. Resource pooling is the virtualization technology that allows the hypervisor to aggregate the physical host's 64 GB of RAM and 8 logical processors into a shared pool, then allocate 8 GB and 2 vCPUs to each of the four VMs. This enables multiple VMs to run on a single host by dynamically distributing physical resources among them, which is exactly what the administrator is doing by virtualizing several servers on one physical host.

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High availability

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Snapshots

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Live migration

Question 15

A company is running multiple virtual machines on a single physical server. The server has 64 GB of RAM and a 4-core CPU with hyper-threading (8 logical processors). The administrator needs to run four VMs, each requiring 2 vCPUs and 16 GB of RAM. The administrator is concerned about resource contention. Which of the following virtualization concepts would BEST allow the administrator to ensure that each VM receives a minimum guaranteed amount of CPU resources?

Accepted Answer

Limits and reservations. Limits and reservations allow the administrator to set a minimum guaranteed amount of CPU resources for each VM. In this scenario, a reservation of 2 vCPUs per VM ensures that each VM will always have access to at least that amount of CPU capacity, preventing resource contention even when the physical host is under load. This is the only option that directly enforces a guaranteed minimum allocation.

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Resource pooling

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Oversubscription

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Affinity