CompTIA Cloud Essentials+ CLO-002 Practice Questions

Answer : C

Disaster recovery is the process of restoring the normal operations of an organization after a disruptive event, such as a natural disaster, a cyberattack, or a human error.Disaster recovery involves the planning, preparation, and implementation of strategies and procedures to minimize the impact and duration of the disruption, and to ensure the continuity and availability of the critical functions and data of the organization1

RTO and RPO are two key metrics that are used to measure and evaluate the disaster recovery capabilities and objectives of an organization. RTO stands for Recovery Time Objective, which is the maximum acceptable amount of time that an application or a service can be offline or unavailable after a disruption.RPO stands for Recovery Point Objective, which is the maximum acceptable amount of data that can be lost or unrecoverable after a disruption2

When designing a new cloud-enabled application, an organization that is considering RTO and RPO is most likely concerned about disaster recovery, as these metrics can help the organization to determine the optimal level of backup, redundancy, and recovery for the application, as well as the potential costs and risks of downtime or data loss.RTO and RPO can also help the organization to choose the appropriate cloud service model, provider, and deployment option that can meet the disaster recovery requirements and expectations of the organization and its customers3

Answer : C

Federation is a technology that allows a social media application to authenticate access to resources that are available in the cloud. Federation enables users to sign in to a cloud service using their existing credentials from another identity provider, such as Facebook, Google, or Microsoft. This way, users do not need to create a separate account or password for the cloud service, and the cloud service does not need to store or manage user identities. Federation also simplifies access management, as the identity provider can control which users and groups are allowed to access the cloud service. Federation is based on standards such as OAuth, OpenID Connect, and SAML, which define how identity providers and cloud services can exchange authentication and authorization information.Reference: CompTIA Cloud Essentials+ CLO-002 Study Guide, Chapter 3: Cloud Service Operations, Section 3.4: Identity and Access Management, Page 113.

Answer : A

A subscription agreement is a type of pay-as-you-go licensing model within a cloud service, where the user pays a recurring fee for the access to the cloud resources and services. The fee is usually based on the number of users, the amount of data, or the duration of the subscription. A subscription agreement allows the user to scale up or down the cloud usage as needed, and only pay for what they use. A subscription agreement is different from a perpetual agreement, which is a one-time payment for a perpetual license to use the cloud service. A subscription agreement is also different from an enterprise agreement, which is a long-term contract that offers discounts and benefits for large-scale cloud usage. A promotional agreement is a temporary offer that provides free or discounted access to the cloud service for a limited time or under certain conditions.Reference:Cloud Service Models - CompTIA Cloud Essentials+ (CLO-002) Cert Guide,Cloud Computing Pricing Models - CompTIA Cloud Essentials+ (CLO-002) Cert Guide

Answer : D

Sandboxing is a testing technique that provides the best isolation for security threats. Sandboxing is a technique that creates a virtual environment that mimics the real system or application, but isolates it from the rest of the network. Sandboxing allows testers to run potentially malicious code or inputs without affecting the actual system or application, or exposing it to external attacks. Sandboxing can help testers to identify and analyze security threats, such as malware, ransomware, or zero-day exploits, without risking the integrity or availability of the real system or application. Sandboxing can also help testers to evaluate the effectiveness of security controls, such as antivirus, firewall, or encryption, in preventing or mitigating security threats.Reference: CompTIA Cloud Essentials+ CLO-002 Study Guide, Chapter 3: Cloud Service Operations, Section 3.5: Testing and Development in the Cloud, Page 125.What is Sandboxing? Definition, Types, Benefits, and Best Practices - Spiceworks1

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 : D

Autoscaling is a cloud computing feature that enables organizations to scale cloud services such as server capacities or virtual machines up or down automatically, based on defined situations such as traffic or utilization levels1. Autoscaling helps to ensure that nodes are added automatically when the load on a web cluster increases, and removed when the load decreases, to optimize performance and costs.Autoscaling can be configured using built-in mechanisms or custom implementations, depending on the cloud service and the specific requirements2.

Autonomous systems are networks that are administered by a single entity and have a common routing policy. Autonomous systems are not related to autoscaling, but rather to network connectivity and routing protocols.

Infrastructure as code is a practice of managing and provisioning cloud resources using code or scripts, rather than manual processes or graphical interfaces. Infrastructure as code can help to automate and standardize cloud deployments, but it does not necessarily imply autoscaling, unless the code or scripts include logic for scaling resources based on demand.

Right-sizing is a technique of optimizing cloud resources to match the actual needs and usage patterns of an application or service. Right-sizing can help to reduce costs and improve efficiency, but it does not involve adding or removing nodes automatically based on load.Right-sizing is usually done periodically or on-demand, rather than continuously3.

Answer : B

An SLA (service level agreement) is a contract between a cloud service provider and a cloud customer that defines the expected level of service, performance, availability, and reliability of the cloud service. An SLA also specifies the contractually allowed downtime for a cloud-hosted application, which is the maximum amount of time that the application can be unavailable or inaccessible without violating the SLA. The contractually allowed downtime is usually expressed as a percentage of uptime, such as 99.9% or 99.99%, which corresponds to a certain number of hours or minutes per year, month, week, or day. For example, an SLA with 99.9% uptime means that the cloud service can be down for up to 8.76 hours per year, or 43.8 minutes per month, or 10.1 minutes per week, or 1.44 minutes per day. If the cloud service provider fails to meet the SLA, the cloud customer may be entitled to compensation or other remedies, such as credits, refunds, or termination of the contract.Reference:CompTIA Cloud Essentials+ CLO-002 Certification Study Guide, page 27-28;CompTIA Cloud Essentials+ Certification Training, CertMaster Learn for Cloud Essentials+, Module 2: Business Principles of Cloud Environments, Lesson 2.4: Cloud Service Agreements, Topic 2.4.2: Service Level Agreements