CompTIA Cloud Essentials+ CLO-002 Exam Practice Test

Answer : C

VDI, or Virtual Desktop Infrastructure, is the result of performing a physical-to-virtual migration of desktop workstations. VDI is a technology that allows users to access and run desktop operating systems and applications from a centralized server in a data center or a cloud, instead of from a physical machine on their premises.VDI provides users with virtual desktops that are delivered over a network to various devices, such as laptops, tablets, or thin clients1.VDI offers several benefits, such as improved security, reduced costs, increased flexibility, and enhanced performance2.

SaaS, or Software as a Service, is not the result of performing a physical-to-virtual migration of desktop workstations, but a cloud service model that provides ready-to-use software applications that run on the cloud provider's infrastructure and are accessed via a web browser or an API3. SaaS does not involve migrating desktop workstations, but using software applications that are hosted and managed by the cloud provider.

IaaS, or Infrastructure as a Service, is not the result of performing a physical-to-virtual migration of desktop workstations, but a cloud service model that provides access to basic computing resources, such as servers, storage, network, and virtualization, that are hosted on the cloud provider's data centers and are rented on-demand. IaaS does not involve migrating desktop workstations, but renting infrastructure resources that can be used to host various workloads.

VPN, or Virtual Private Network, is not the result of performing a physical-to-virtual migration of desktop workstations, but a technology that creates a secure and encrypted connection between a device and a network over the internet. VPN does not involve migrating desktop workstations, but connecting to a network that can provide access to remote resources or services.Reference:What is VDI? Virtual Desktop Infrastructure Definition - VMware;VDI Benefits: 7 Advantages of Virtual Desktop Infrastructure;What is SaaS? Software as a service | Microsoft Azure; [What is IaaS? Infrastructure as a service | Microsoft Azure]; [What is a VPN? | HowStuffWorks].

Answer : B

A disaster recovery plan (DRP) is a document that defines the procedures and resources needed to restore normal operations after a major disruption. A DRP typically includes the following elements:

The scope and objectives of the plan

The roles and responsibilities of the DR team

The inventory and location of critical assets and resources

The recovery strategies and procedures for different scenarios

The testing and maintenance schedule for the plan

The communication plan for internal and external stakeholders

One of the key components of a DRP is the recovery sequence, which is the optimal, sequential order in which cloud resources should be recovered in the event of a major failure. The recovery sequence is based on the priority and dependency of the resources, as well as the recovery time objective (RTO) and recovery point objective (RPO) of the business. The recovery sequence helps to minimize the downtime and data loss, and ensure the continuity of the business operations.

A recovery point objective (RPO) is the maximum acceptable amount of data loss measured in time. It indicates how often the data should be backed up and how much data can be restored after a disaster. A recovery time objective (RTO) is the maximum acceptable amount of time that a system or application can be offline after a disaster. It indicates how quickly the system or application should be restored and how much downtime can be tolerated by the business.

An incident response plan (IRP) is a document that defines the procedures and actions to be taken in response to a security breach or cyberattack. An IRP typically includes the following elements:

The scope and objectives of the plan

The roles and responsibilities of the incident response team

The incident identification and classification criteria

The incident containment, eradication, and recovery steps

The incident analysis and reporting methods

The incident prevention and improvement measures

A network topology diagram is a visual representation of the physical and logical layout of a network. It shows the devices, connections, and configurations of the network. A network topology diagram can help to identify the potential points of failure, the impact of a failure, and the recovery options for a network. However, it does not define the optimal, sequential order in which cloud resources should be recovered in the event of a major failure.

Disaster recovery planning guide | Cloud Architecture Center - Google Cloud

What is Disaster Recovery and Why Is It Important? - Google Cloud

Key considerations when building a disaster recovery plan for private cloud - Continuity Central

12 Essential Points Of the Disaster Recovery Plan Checklist - NAKIVO

Building a Cloud Disaster Recovery Plan: Tips and Approaches - MSP360

Answer : A

Reserved instances are a type of cloud pricing model that allows customers to reserve a certain amount of cloud resources for a fixed period of time, usually one or three years, and pay a lower rate than the on-demand or pay-as-you-go model.Reserved instances are suitable for workloads that have predictable and stable resource consumption, as they can help customers save up to 75% of the cloud costs compared to the on-demand model1. However, reserved instances also require a long-term commitment and upfront payment, which may reduce the flexibility and scalability of the cloud.

The other options are not likely to help the company reduce the cost of infrastructure:

Pay-as-you-go: This is a type of cloud pricing model that allows customers to pay only for the resources they use, without any upfront or long-term commitment. Pay-as-you-go is suitable for workloads that have variable and unpredictable resource consumption, as it provides flexibility and scalability.However, pay-as-you-go is also the most expensive cloud pricing model, as it charges a higher rate per unit of resource than the reserved or spot instances models1.

Spot instances: This is a type of cloud pricing model that allows customers to bid for unused cloud resources at a discounted rate, usually up to 90% lower than the on-demand model1. Spot instances are suitable for workloads that are flexible, interruptible, and not time-sensitive, as they can be terminated at any time by the cloud provider when the demand or price increases. Spot instances can help customers save a lot of money, but they also introduce a high level of uncertainty and risk to the cloud environment.

Bring your own license: This is a type of cloud pricing model that allows customers to use their existing software licenses on the cloud, instead of purchasing new licenses from the cloud provider.Bring your own license can help customers reduce the software costs, but it does not affect the cost of infrastructure, which is based on the amount and type of cloud resources used2.

Cloud Pricing Models: On-Demand, Reserved, and Spot Instances

Bring Your Own License (BYOL) in Cloud Computing

Answer : C

Geo-redundancy is the distribution of mission-critical components or infrastructures, such as servers, across multiple data centers that reside in different geographic locations1.Geo-redundancy acts as a safety net in case the primary site fails or in the event of a disaster or an outage that impacts an entire region1.Geo-redundancy also reduces latency and ensures close proximity to end users by delivering web content from the nearest data center2.Geo-redundancy is a common feature of cloud computing, as it provides high availability, reliability, and performance for cloud applications and services2.

Replication is the process of copying data from one location to another, such as from a primary site to a secondary site, or from one cloud provider to another3.Replication is a necessary but not sufficient condition for geo-redundancy, as it does not guarantee that the replicated data is accessible or consistent across different regions3.Replication can also introduce operational complexity and data synchronization issues3.

Zones are logical or physical partitions of a cloud provider's infrastructure that offer high availability and fault tolerance within a region4.Zones are usually located in the same or nearby data centers, and are connected by low-latency network links4.Zones can help distribute the workload and prevent single points of failure, but they do not provide geo-redundancy, as they are still vulnerable to regional outages or disasters4.

Backup is the process of creating and storing copies of data for the purpose of recovery in case of data loss or corruption5.Backup is an important part of data protection and disaster recovery, but it does not provide geo-redundancy, as it does not ensure that the backup data is available or up-to-date in different regions5.Backup can also have longer recovery time and higher cost than geo-redundancy5.Reference:Use geo-redundancy to design highly available applications;Geo Redundancy Explained | Cloudify;Georedundancy - Open Telekom Cloud;Why geo-redundancy for cloud infrastructure is a 'must have';Geo-Redundancy: Why Is It So Important? | Unitrends.

Answer : C

Cloud bursting is a configuration method that uses cloud computing resources whenever on-premises infrastructure reaches peak capacity. When organizations run out of computing resources in their internal data center, they burst the extra workload to external third-party cloud services.Cloud bursting is a convenient and cost-effective way to to support workloads with varying demand patterns and seasonal spikes in demand12. Elasticity and scalability are related concepts, but they are not specific solutions for the retailer's problem.Elasticity refers to the ability of a cloud service to automatically adjust the amount of resources allocated to a workload based on the current demand3.Scalability refers to the ability of a cloud service to handle increasing or decreasing workloads by adding or removing resources4.Self-service is a feature of cloud computing that allows users to provision, manage, and monitor their own cloud resources without the need for human intervention5.While these features are beneficial for cloud consumers, they do not address the retailer's need to handle the high load on its servers during the holiday season without moving its IT operations completely to the cloud.

https://azure.microsoft.com/en-us/resources/cloud-computing-dictionary/what-is-cloud-bursting/

https://aws.amazon.com/what-is/cloud-bursting/

https://www.geeksforgeeks.org/cloud-bursting-vs-cloud-scaling/

Answer : D

A lift and shift migration approach, also known as rehosting, is a cloud migration strategy where applications and infrastructure are moved from one environment to another without making substantial changes to the underlying architecture123. This approach can be faster, cheaper, and less risky than other migration strategies, as it does not require extensive redesign or reconfiguration of the applications.However, it may also limit the ability to leverage the native features and benefits of the cloud platform, such as scalability, elasticity, and performance1245.

One of the challenges of a lift and shift migration is transferring large amounts of data and virtual machines over the network, which can be time-consuming, costly, and prone to errors. To overcome this challenge, some cloud providers offer a technique where the customer can transfer all of their on-premises data and virtual machines to an appliance, such as a physical storage device or a server, and then ship it to the cloud provider.The cloud provider then uploads the data and virtual machines to the cloud platform, where they can be accessed by the customer12. This technique can reduce the network bandwidth and latency issues, as well as the security risks, associated with transferring data over the internet.However, it may also introduce additional costs and delays for shipping and handling the appliance, as well as the risk of damage or loss during transit2.

Therefore, transferring all of a customer's on-premises data and virtual machines to an appliance, and then shipping it to a cloud provider is a technique used in a lift and shift migration approach.Reference:

1: Lift and Shift: An Essential Guide | IBM

2: What Is Lift and Shift? | 5 Strategies to Consider | NetApp

3: What Is Lift and Shift Migration? | Pure Storage

4: Lift and Shift: Business Benefits, Planning and Execution - NetApp

5: Lift and Shift Cloud Migration: Benefits, Disadvantages and Use Cases ...

Answer : B

API stands for Application Programming Interface, which is a set of rules and protocols that allow different software components or systems to communicate and exchange data. API is used to integrate with cloud solutions because it enables developers to access the cloud services and resources programmatically, without having to deal with the underlying infrastructure or platform details. API also allows for automation, scalability, and interoperability of cloud applications and services.