CompTIA CompTIA Cloud Essentials CLO-002 Questions & Answers

• Question 201:

  A mobile application development team requires frequent software updates for a major launch of a customer- facing application. The business requirement is to be first-to-market on a new feature that leverages third- party-hosted services.

  Which of the following is the BEST approach to use for speed and efficiency?

  A. Proprietary code solution

  B. Application programming interface

  C. Regression testing

  D. Production load testing

  Correct Answer: B

  Explanation: An application programming interface (API) is a set of rules and protocols that enable different applications to communicate and exchange data and functionality. APIs can simplify software development and innovation by allowing

  applications to access the data and services of other applications, especially those hosted on the cloud. APIs can also speed up the development process by reducing the need to write code from scratch or maintain complex infrastructure.

  For a mobile application development team that requires frequent software updates and wants to leverage third-party-hosted services, using APIs is the best approach for speed and efficiency. APIs can help the team to integrate their

  application with the cloud-based services they need, such as authentication, storage, analytics, or payment processing. APIs can also help the team to deliver updates faster and more reliably, as they can use the cloud provider's APIs to

  deploy, test, and monitor their application. APIs can also enable the team to be first-to-market on a new feature, as they can use existing APIs to access the functionality they need, rather than building it themselves.

  References:

  1: What is an Application Programming Interface (API)? | IBM

  2: What is an API (Application Programming Interface)? | AWS

  3: Cloud APIs | Complete Guide | Akana by Perforce CompTIA Cloud Essentials+ Certification Study Guide, Second Edition (LO-002), Chapter 8: Applications and Big Data in the Cloud, Section 8.1: Cloud Application Architecture4

• Question 202:

  A Chief Information Officer (CIO) wants to identify two business units to be pilots for a new cloud project. A business analyst who was recently assigned to this project will be selecting a cloud provider. Which of the following should the business analyst do FIRST?

  A. Conduct a feasibility study of the environment.

  B. Conduct a benchmark of all major systems.

  C. Draw a matrix diagram of the capabilities of the cloud providers.

  D. Gather business and technical requirements for key stakeholders.

  Correct Answer: D

  Explanation: The first step for the business analyst to select a cloud provider for the new cloud project is to gather business and technical requirements for key stakeholders. Business requirements are the needs and expectations of the business units and end users, such as the goals, benefits, and outcomes of the project. Technical requirements are the specifications and constraints of the cloud solution, such as the performance, availability, security, and scalability. Gathering business and technical requirements is essential to understand the scope, objectives, and criteria of the project, and to evaluate and compare different cloud providers based on their capabilities and offerings1. Conducting a feasibility study of the environment is a possible next step after gathering the requirements, to assess the viability and suitability of the cloud project, and to identify the risks, costs, and benefits of moving to the cloud2. Conducting a benchmark of all major systems is another possible step after gathering the requirements, to measure the current performance and utilization of the existing systems, and to determine the optimal configuration and resources for the cloud solution3. Drawing a matrix diagram of the capabilities of the cloud providers is a possible step after gathering the requirements and conducting the feasibility study and the benchmark, to compare and contrast the features and services of different cloud providers, and to select the best fit for the project4. References:

  1: CompTIA Cloud Essentials+ Certification Study Guide, Second Edition (LO-002), Chapter 5, page 131.

  2: CompTIA Cloud Essentials+ Certification Study Guide, Second Edition (LO-002), Chapter 5, page 133.

  3: CompTIA Cloud Essentials+ Certification Study Guide, Second Edition (LO-002), Chapter 5, page 135.

  4: CompTIA Cloud Essentials+ Certification Study Guide, Second Edition (LO-002), Chapter 5, page 137.

• Question 203:

  Which of the following are the appropriate responses to risks?

  A. Mitigate, accept, avoid, validate

  B. Migrate, accept, avoid, transfer

  C. Mitigate, accept, avoid, transfer

  D. Migrate, accept, avoid, validate

  Correct Answer: C

  Explanation: According to the CompTIA Cloud Essentials+ CLO-002 Study Guide, there are four common risk response types: avoid, share or transfer, mitigate, and accept1. These are the appropriate responses to risks, depending on the risk type, assessment, and attitude. The other options are incorrect because they include terms that are not valid risk responses. For example, migrate is not a risk response, but a cloud deployment strategy. Validate is not a risk response, but a quality assurance technique. References: CompTIA Cloud Essentials+ CLO-002 Study Guide, Chapter 4: Cloud Security, Section 4.2: Cloud Security Concepts, Page 153.

• Question 204:

  Which of the following is the result of performing a physical-to-virtual migration of desktop workstations?

  A. SaaS

  B. laaS

  C. VDI

  D. VPN

  Correct Answer: C

  Explanation: 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. References: 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].

• Question 205:

  A company is sending copies of its information to an off-site server managed by a CSR Which of the following BEST describes this strategy?

  A. Backup

  B. Zones

  C. Locality

  D. Geo-redundancy

  Correct Answer: D

  Explanation: Geo-redundancy is the strategy of sending copies of data to a distant region from the original cloud storage location. This provides protection against regional disasters or outages that might affect the primary data center. A CSR (cloud service provider) is a third-party company that offers cloud-based services such as storage, computing, networking, or software. A company that uses a CSR to store its data in a geo-redundant manner is leveraging the benefits of cloud computing, such as scalability, availability, and cost-effectiveness. References: CompTIA Cloud Essentials+ CLO-002 Study Guide, page 103; CompTIA Cloud Storage Requirements- What You Need to Know

• Question 206:

  A business is experiencing an outage of a customer-facing e-commerce website after a SaaS-based CDN upgrade. The RTO is 5 minutes or less, but it has already been 10 minutes since the outage. After 15 minutes, the CDN recovers for the outage. The business loses $25000 in revenue per minute of the outage. Which of the following is the financial impact to the business?

  A. $250000

  B. $350000

  C. $375000

  D. $400000

  Correct Answer: C

  Explanation: The financial impact to the business is the amount of revenue lost due to the outage of the customer-facing e-commerce website. To calculate the financial impact, we can use the following formula: Financial impact = Revenue loss per minute x Outage duration Using this formula, we can find the financial impact as follows: Financial impact = $25000 x 15 minutes = $375000 Therefore, the financial impact to the business is $375000, which is the product of the revenue loss per minute and the outage duration. Option C is the correct answer. Option A is incorrect because it is the product of the revenue loss per minute and the RTO, which is the maximum acceptable outage duration, not the actual outage duration. Option B is incorrect because it is the product of the revenue loss per minute and the time elapsed since the outage, not the outage duration. Option D is incorrect because it is the product of the revenue loss per minute and the sum of the RTO and the outage duration, which is not relevant to the financial impact calculation. References: CompTIA Cloud Essentials+ CLO002 Study Guide, Chapter 6: Cloud Operations Principles, Section 6.2: Disaster Recovery Concepts, Page 179 and [How to Calculate the Cost of Downtime for Your Business | LogicMonitor]

• Question 207:

  A company with a variable number of employees would make good use of the cloud model because of:

  A. multifactor authentication

  B. self-service

  C. subscription services

  D. collaboration

  Correct Answer: C

  Explanation: A company with a variable number of employees would make good use of the cloud model because of subscription services. Subscription services are a type of cloud pricing model that allows customers to pay a fixed fee for a certain amount of cloud resources or services for a specific period of time, such as monthly or annually. Subscription services can offer benefits such as predictable costs, scalability, flexibility, and reduced upfront investment. A company with a variable number of employees can use subscription services to adjust the cloud resources or services according to the changing demand and size of the workforce, without wasting money on unused capacity or paying extra fees for exceeding the limit. Subscription services can also enable the company to access the latest cloud technologies and features without having to purchase or maintain them. The other options are not the best reasons for a company with a variable number of employees to use the cloud model. Multifactor authentication is a security method that requires users to provide two or more pieces of evidence to verify their identity, such as a password, a code, or a biometric factor. Multifactor authentication can enhance the security of the cloud services, but it is not related to the number of employees. Self-service is a cloud characteristic that allows users to provision, manage, and terminate cloud resources or services on demand, without requiring the intervention of the cloud provider or the IT department. Self-service can improve the efficiency and agility of the cloud services, but it is not related to the number of employees. Collaboration is a cloud benefit that enables users to work together on projects, documents, or tasks using cloud-based tools and platforms, such as online file sharing, video conferencing, or project management. Collaboration can increase the productivity and innovation of the cloud services, but it is not related to the number of employees. References: CompTIA Cloud Essentials+ Certification Study Guide, Second Edition (LO-002), Chapter 1: Cloud Principles and Design, Section 1.2: Cloud Computing Concepts, p. 26-27.

• Question 208:

  A company is evaluating the capital expenditure necessary to modernize its on-premises datacenter. Management has directed that 50% of capital expenditure be reallocated to operating expenditure. Which of the following cloud characteristics applies?

  A. BYOL

  B. Billing chargeback

  C. Pay-as-you-go

  D. High availability

  Correct Answer: C

  Explanation: Pay-as-you-go is a cloud characteristic that applies to the scenario of reallocating capital expenditure to operating expenditure. Pay-as-you-go is a billing model in which customers only pay for the cloud resources and services they consume, without any upfront or fixed costs1. Pay-as-you-go allows customers to shift from CapEx to OpEx, as they do not need to invest in physical infrastructure or long-term contracts, but rather pay for what they use as they use it2. Pay-as-you-go also provides flexibility and scalability, as customers can adjust their usage and spending according to their needs and demand3. BYOL stands for Bring Your Own License, which is a cloud characteristic that allows customers to use their existing software licenses on the cloud provider's platform, instead of purchasing new licenses from the cloud provider4. BYOL can help customers save money and avoid vendor lock-in, but it does not necessarily affect the allocation of CapEx and OpEx. Billing chargeback is a cloud characteristic that enables customers to allocate and track the costs of cloud resources and services to different departments, projects, or business units within their organization5. Billing chargeback can help customers optimize their cloud spending and improve accountability and transparency, but it does not directly influence the balance of CapEx and OpEx. High availability is a cloud characteristic that refers to the ability of a cloud system to remain operational and accessible at all times, even in the event of failures or disruptions. High availability is achieved by using redundant and fault-tolerant components, such as servers, networks, and storage, that can automatically failover or switch to backup resources in case of an outage. High availability is an important benefit of cloud computing, as it ensures reliability and performance, but it does not relate to the distinction between CapEx and OpEx. References:

  1: CompTIA Cloud Essentials+ Certification Study Guide, Second Edition (LO-002), Chapter 2, page 37.

  2: CompTIA Cloud Essentials+ Certification Study Guide, Second Edition (LO-002), Chapter 3, page 71.

  3: CompTIA Cloud Essentials+ Certification Study Guide, Second Edition (LO-002), Chapter 3, page 72.

  4: CompTIA Cloud Essentials+ Certification Study Guide, Second Edition (LO-002), Chapter 2, page 40.

  5: CompTIA Cloud Essentials+ Certification Study Guide, Second Edition (LO-002), Chapter 3, page 78. [6]: CompTIA Cloud Essentials+ Certification Study Guide, Second Edition (LO-002), Chapter 2, page 35. [7]: CompTIA Cloud Essentials+ Certification Study Guide, Second Edition (LO-002), Chapter 4, page 99.

• Question 209:

  A cloud administrator notices users call to report application performance degradation between 1:00 p.m. and 3:00 p.m. every day. Which of the following is the BEST option for the administrator to configure?

  A. Locality

  B. Block storage

  C. Right-sizing

  D. Auto-scaling

  Correct Answer: D

  Explanation: Auto-scaling is a feature that helps to adjust the capacity of a system automatically based on its current demand. The goal of auto-scaling is to maintain the performance of the system and to reduce costs by only using the resources that are actually needed1. If the cloud administrator configures auto-scaling for the application, the system can scale out (add more instances) during the peak hours of 1:00 p.m. and 3:00 p.m. every day, and scale in (remove instances) when the demand is low. This way, the application can handle the increased workload without degrading its performance, and the users can have a better experience. References: CompTIA Cloud Essentials+ Certification Study Guide, Second Edition (LO-002), Chapter 2: Cloud Computing Concepts, pages 41-42.

• Question 210:

  A cloud administrator needs to ensure as much uptime as possible for an application. The application has two database servers. If both servers go down simultaneously, the application will go down. Which of the following must the administrator configure to ensure the CSP does not bring both servers down for maintenance at the same time?

  A. Backups

  B. Availability zones

  C. Autoscaling

  D. Replication

  Correct Answer: B

  Explanation: Availability zones are logical data centers within a cloud region that are isolated and independent from each other. Availability zones have their own power, cooling, and networking infrastructure, and are connected by low-latency networks. Availability zones help to ensure high availability and fault tolerance for cloud applications by allowing customers to deploy their resources across multiple zones within a region. If one availability zone experiences an outage or maintenance, the other zones can continue to operate and serve the application12 To ensure the CSP does not bring both servers down for maintenance at the same time, the cloud administrator must configure the application to use availability zones. The administrator can deploy the two database servers in different availability zones within the same region, and enable replication and synchronization between them. This way, the application can access either server in case one of them is unavailable due to maintenance or failure. The administrator can also use load balancers and health checks to distribute the traffic and monitor the status of the servers across the availability zones34 Backups are not the best option to ensure the CSP does not bring both servers down for maintenance at the same time, because backups are copies of data that are stored in another location for recovery purposes. Backups can help to restore the data in case of data loss or corruption, but they do not provide high availability or fault tolerance for the application. Backups are usually performed periodically or on-demand, rather than continuously. Backups also require additional storage space and bandwidth, and may incur additional costs. Autoscaling is not the best option to ensure the CSP does not bring both servers down for maintenance at the same time, because autoscaling is a feature that allows customers to scale their cloud resources up or down automatically, based on predefined conditions such as traffic or utilization levels. Autoscaling can help to optimize the performance and costs of the application, but it does not guarantee high availability or fault tolerance for the application. Autoscaling may not be able to scale the resources fast enough to handle sudden spikes or drops in demand, and it may also introduce additional complexity and overhead for managing the resources. Replication is not the best option to ensure the CSP does not bring both servers down for maintenance at the same time, because replication is a process of copying and synchronizing data across multiple locations or devices. Replication can help to improve the availability and consistency of the data, but it does not prevent the CSP from bringing both servers down for maintenance at the same time. Replication also depends on the availability and connectivity of the locations or devices where the data is replicated, and it may also increase the network traffic and storage requirements. References: 1: https://learn.microsoft.com/en-us/azure/reliability/availability-zones- overview 2: https://www.comptia.org/training/ books/cloud-essentials-clo-002-study-guide, page 42 3: https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Concepts.RegionsAndAvaila bilityZones.html 4: https://docs.aws.amazon.com/elasticloadbalancing/latest/userguide/how-elastic-load- balancing-works.html : https://www.comptia.org/training/books/cloud-essentials-clo-002- study-guide, page 44 : https://www.comptia.org/training/books/ cloud-essentials-clo-002- study-guide, page 46 : https://www.comptia.org/training/books/cloud-essentials-clo-002- study-guide, page 48