220-1101 Practice Test 6 — 10 Questions

Question 1

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 2

A cloud provider hosts virtual servers for multiple clients on the same physical hardware. Each client's data and applications are logically isolated from others, and the clients have no knowledge of where their resources are physically located. This is an example of which essential characteristic of cloud computing?

Accepted Answer

Resource pooling. Resource pooling is the correct answer because the scenario describes a cloud provider using virtualization to aggregate physical hardware resources (compute, storage, network) and dynamically assign them to multiple clients. Each client's data and applications are logically isolated, and the clients have no awareness or control over the exact physical location of their resources, which is the defining characteristic of resource pooling as per NIST SP 800-145.

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Rapid elasticity

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Measured service

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On-demand self-service

Question 3

A company hosts its e-commerce application on a public cloud provider. The architecture includes duplicate virtual servers in two separate geographic regions. A global load balancer monitors server health. If an entire region becomes unavailable due to a natural disaster, the load balancer automatically reroutes all traffic to the remaining region. The application continues to run without any manual intervention. This capability is BEST described by which cloud characteristic?

Accepted Answer

Fault tolerance. The correct answer is D, fault tolerance. This scenario describes a system that continues operating without interruption when an entire region fails, automatically rerouting traffic via a global load balancer. Fault tolerance specifically refers to a system's ability to continue functioning, without any downtime or manual intervention, even when a component or entire infrastructure fails. High availability (A) aims to minimize downtime but typically allows for brief interruptions or manual failover, whereas this design ensures zero-touch, continuous operation.

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High availability

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Scalability

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Elasticity

Question 4

A company hosts a critical database server on-premises. They want to migrate to a cloud solution that allows them to retain full administrative control over the operating system, database software, and security patches, but they do not want to manage the physical server hardware, rack space, or network cabling. Which cloud service model should they choose?

Accepted Answer

IaaS. IaaS (Infrastructure as a Service) is the correct choice because it provides virtualized computing resources over the internet, including virtual machines, storage, and networking. The customer retains full administrative control over the operating system, database software, and security patches, while the cloud provider manages the physical server hardware, rack space, and network cabling. This matches the requirement of full OS and application control without physical infrastructure management.

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PaaS

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SaaS

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DaaS

Question 5

A company is developing a custom application that requires a specific Linux kernel version and full root access to install and configure third-party security modules. The company wants to minimize the management of physical infrastructure but needs complete control over the operating system environment, including the ability to modify kernel parameters. The cloud provider will be responsible for all underlying hardware and the hypervisor. Which cloud service model should the company choose?

Accepted Answer

Infrastructure as a Service (IaaS). IaaS provides virtualized computing resources over the internet, granting the customer full administrative control over the operating system, including the ability to install custom kernels, modify kernel parameters, and install third-party security modules. The cloud provider manages the physical hardware and hypervisor, while the customer retains complete control of the guest OS, meeting the requirement for root access and kernel customization without managing physical infrastructure.

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Platform as a Service (PaaS)

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Software as a Service (SaaS)

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Database as a Service (DBaaS)

Question 6

A company needs to run a legacy application that requires a specific version of a Linux kernel that is not supported by the current physical server's hardware. The IT team wants to use virtualization to run this application on the existing server. Which virtualization technology would BEST allow this?

Accepted Answer

Full virtualization. Full virtualization allows a guest operating system to run unmodified on top of a hypervisor by abstracting the underlying hardware completely. In this scenario, the legacy application requires a specific Linux kernel version that the physical server's hardware does not support; full virtualization enables the hypervisor to present a virtualized hardware environment that is compatible with that kernel, regardless of the actual physical hardware. Technologies like VMware ESXi or KVM with hardware-assisted virtualization (Intel VT-x/AMD-V) provide this capability without requiring any modifications to the guest OS.

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Paravirtualization

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Containerization

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Emulation

Question 7

A company runs a critical web application on a virtual machine in a public cloud. To ensure high availability during traffic spikes and hardware failures, the administrator wants to distribute incoming traffic across multiple identical VMs. Which of the following cloud solutions BEST meets this requirement?

Accepted Answer

Deploy a load balancer to distribute traffic across the VM instances.. A load balancer (Option B) is the correct solution because it actively distributes incoming traffic across multiple identical VM instances, providing high availability by automatically rerouting traffic away from failed instances. Unlike DNS-based methods, a load balancer performs health checks and can handle traffic spikes without relying on client-side caching or TTL propagation delays.

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Configure an auto-scaling group to add more VMs during high demand.

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Set up DNS round-robin with multiple A records pointing to each VM.

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Establish a site-to-site VPN connection to the cloud provider's network.

Question 8

A company runs a critical application on a virtual machine (VM) in a public cloud. The application requires a static private IP address and persistent block storage that must be retained if the VM is replaced. Due to performance issues, the IT team needs to migrate the application to a new VM with more vCPUs and RAM. Which of the following actions will achieve this with minimal downtime while preserving the static IP and data?

Accepted Answer

C) Detach the persistent storage volume from the old VM, create a new VM with the desired resources, attach the volume, and assign the static IP to the new VM. Option C is correct because it directly addresses the requirements: detaching the persistent block storage (e.g., a cloud volume like an EBS or persistent disk) preserves the data independently of the VM lifecycle, and assigning the static private IP to the new VM maintains network identity. This approach minimizes downtime by avoiding data transfer over the network and allows the new VM to be provisioned with the desired vCPUs and RAM while the old VM remains running until the cutover.

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A) Create a new VM with the desired resources, then manually copy the application data over the network

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B) Migrate the existing VM to a different physical host within the same cloud region

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D) Take a snapshot of the current VM and deploy a new VM instance from that snapshot, then reconfigure the IP

Question 9

A company runs multiple virtual machines on a single hypervisor host using a Type 2 hypervisor. The IT manager wants to migrate to a Type 1 hypervisor to improve performance and reduce overhead. Which of the following is a key advantage of using a Type 1 hypervisor in this scenario?

Accepted Answer

It runs directly on the hardware, providing more resources to VMs.. A Type 1 hypervisor (bare-metal) runs directly on the host hardware without an underlying operating system, eliminating the overhead of a host OS. This direct access to physical resources (CPU, memory, I/O) allows virtual machines to achieve near-native performance and reduces resource contention, which directly addresses the company's goal of improving performance and reducing overhead.

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It can run on any commodity hardware without specific requirements.

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It allows running Windows and Linux on the same host.

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It does not require a separate management console.

Question 10

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