CompTIA Cloud Essentials Certification Study Exam (CLO-001) with ANSWERS, Exams of Computer Science

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CompTIA Cloud Essentials Certification

Study Exam (CLO-001) with ANSWERS

Which of the following statements correctly explains the benefit of cloud computing? - ✔ Cloud computing delivers IT capabilities that scale with demand. It is easy to exchange small text messages through Twitter. What is this an example of?

• ✔ SaaS. Software as a Service is defined as productivity software, such as email, word processing or, Twitter, that is delivered over a network and available any time using any device. Which of the following statements best defines virtualization? - ✔ Virtualization is a set of techniques for hiding hardware resources behind software abstractions. When provisioning new virtual servers, which of the following must be done? (Choose two.) - ✔ You must specify user credentials used with the new virtual server, and you must specify how much RAM the virtual machine will use. Which definition applies to time-sharing? - ✔ Users could share expensive computing equipment at the same time by having their own isolated computing sessions. Which of the following statements are true regarding cloud services? (Choose two.) - ✔ Instead of purchasing hardware and software, you purchase only the cloud IT solutions you use on an ongoing basis. Provisioning new cloud IT services, such as new virtual servers, is done very quickly compared to ordering physical server hardware and then installing an operating system on it. How can cloud computing improve the flexibility of businesses? - ✔ Because public SaaS solutions are already on the Internet, any user who has been granted access can easily connect. Rapid elasticity allows businesses to respond to up and down swings in business activity, which in turn means businesses pay for the cloud services they use. PaaS allows developers to quickly create and test applications; this is made possible by software libraries and databases for developers and the rapid creation of virtual machines. Cloud computing might not be beneficial for which of the following? - ✔ Sensitive email systems, such as that used by the Pentagon, should be hosted in-house. This allows full control over the installation and use of the system. Syl, a developer, is using cloud services to create and test a new application. What type of cloud service is Syl using? - ✔ PaaS allows developers to quickly create and test applications.

Which of the following is not a typical business objective realized by IT outsourcing and cloud computing? - ✔ Security problems are not a typical reason for outsourcing or cloud adoption. Which of the following statements is true? - ✔ Cloud computing is essentially IT outsourcing, at least from a business perspective. Acme Incorporated is using a specific line-of-business piece of software and does not have the skilled help-desk staff required to support the software. What solution should Acme Incorporated employ? - ✔ Acme Incorporated needs skilled help-desk staff to support its specific software. Outsourcing is usually the result of a lack of specific skill sets within an organization. You are the IT administrator for a small regional airline that is opening a new office. To meet the airline's computing needs, you order server and desktop hardware, as well as the required software. Cloud computing can reduce or, in some cases, entirely eliminate these responsibilities from their customers. To which cloud characteristic does this scenario apply? - ✔ Scalability embodies the ability to grow in a controlled manner, as in increasing computing infrastructure as business needs demand. For a software development firm, which of the following cloud benefits is realized with PaaS? - ✔ PaaS allows developers to quickly create and test applications. Getting your product to market before your competitors can give a competitive edge. How does cloud computing affect a cloud customer's cost structure? - ✔ Instead of spending capital to acquire computing hardware, software, and licenses, cloud customers can essentially rent the IT services they need as they need them; thus, capital expenditures (CAPEX) become operating expenses (OPEX). With a cloud solution, which of the following IT tasks are the responsibility of the cloud provider? (Choose three.) - ✔ Cloud providers are responsible for all aspects of purchasing hardware and software and licensing software for their cloud solutions. Stacey, a financial analyst, is describing the business benefits of public cloud computing to her colleagues. Which of the following might she state? (Choose two.) - ✔ Cloud solutions remove the need to wait for physical computing hardware to arrive as IT needs grow, and provisioning of IT services is done very quickly thanks to virtualization; these factors reduce the amount of time a business takes to get a product or service to their customers. Data stored in the cloud is easily accessible from anywhere and thus facilitates data collaboration. While __________ and __________ are important IT considerations to a business, they are not specific to cloud computing. - ✔ Backup and disaster recovery are critically important to any business using any type of IT solution, not just cloud customers.

Which statement regarding private clouds is true? - ✔ Private clouds use computing assets owned by, and for the exclusive use by, a single organization. Numerous cloud customers sharing the same computing services while having isolated computing environments is described as which of the following? - ✔ Multitenancy allows multiple cloud customers to use the same computing services such as cloud mailboxes, but the cloud provider ensures each cloud customer is kept isolated from another. Which of the following are specific examples of IaaS? (Choose all that apply.) - ✔ IaaS provides computing infrastructure services such as virtual servers, virtual networks, cloud backup, and cloud storage. Your organization uses on-premises servers to authenticate user logon requests. You would like to authorize user access to cloud email accounts using their local credentials. Which solution should you employ? - ✔ Identity federation uses a single identity provider to authorize user access to multiple software applications, including cloud apps. Relocating web content closer to users for quicker access is done using __________. - ✔ Content distribution networks place cloud content closer physically to users, which enhances the user experience because of quicker access. You are designing a solution to ensure your on-premises users will always have access to public cloud services. What should you consider? - ✔ Redundant network connections. A single network connection to a cloud provider presents a single point of failure. Cloud adoption does not remove the need for on-premises IT personnel. Which task must local IT personnel undertake to ensure cloud solutions are delivering business value? - ✔ Monitoring application performance. Local IT personnel must monitor cloud solutions to ensure optimal performance. Underperforming cloud solutions could be because of sluggish network connections or overburdened cloud providers, and this reduces the value offered by cloud computing. Which of the following statements is true? - ✔ PaaS is used to create web services. PaaS is used by software developers to create and test applications. These applications typically take the form of web services. What benefits are derived from PaaS? - ✔ Rapid application development. PaaS provides reusable software libraries, databases, virtual machines, storage, and so on, to software developers to decrease the amount of time it takes to create and test software applications.

Which application should be migrated to the cloud for initial cloud testing? - ✔ Word processing. Noncritical software such as a word processor should be tested first in the cloud. Your company's application development team requires a self-provisioned software development solution that can quickly grow or shrink based on each project's parameters. Existing customer data will be used from a customized line-of-business application. What would you suggest? - ✔ Private PaaS. Since customer data stored in a customized line-of-business app is needed, private PaaS makes the most sense. Cloud solutions that can tolerate failures yet still provide service are referred to as what? - ✔ Highly available. High availability ensures cloud solutions are always accessible. This means eliminating single points of failure such as storing data on a single hard disk or single network connections. You are evaluating cloud backup offerings from various cloud providers. What type of cloud service is cloud backup? - ✔ IaaS. IaaS cloud service offerings include virtual servers, cloud storage, cloud backup, virtual networks, and so on. What is used to automate the provisioning of virtual machines? - ✔ Cloud providers have management software, usually web-based, that is used to automate virtual machine provisioning. Which of the following are risks associated with depending on cloud providers? (Choose two.) - ✔ Proprietary data formats and Vendor lock-in. If cloud data is stored in a proprietary format and you decide to have that data hosted in-house or you decide to switch cloud providers, your data will be inaccessible. Vendor lock-in occurs when cloud customers are stuck with using a specific cloud provider's management tools. Which item usually presents a single point of failure in regard to cloud computing? - ✔ Network connection. Because cloud services are accessible over a network, it is important to have redundant network links. Which of the following statements regarding a change in IT roles as a result of cloud adoption is accurate? - ✔ Private clouds could require IT personnel to provision services, and not servers, will be a skill that IT staff members must possess. For in-house IT personnel, which IT task will be emphasized with cloud adoption? - ✔ Application performance monitoring. Monitoring the performance and availability of cloud services, and the network connection to them, is an important skill resulting from cloud adoption. What must be done to ensure the ongoing success of cloud service adoption? - ✔ To provide business value, all IT services must be coupled with specific business processes to serve the needs of the business.

Which of the following items would show up in an SLA? (Choose all that apply.) - ✔ Service elasticity, that is, the ability to increase or decrease a cloud service such as the number of user mailboxes, should be stated in the SLA. All SLAs state the expected level of service cloud customers can expect and the repercussions if those service levels are not met. Cloud adoption can increase the workload for cloud customer internal IT staff members in which way? - ✔ With cloud adoption, IT staff members will find themselves focusing more on the delivery, monitoring, and maintenance of IT services. Planning disk capacity requirements in the cloud applies to which service management phase? - ✔ Capacity planning falls under the Service Design phase. Encouraging cloud service use during minimal load times applies to which ITIL Service Strategy process? - ✔ Demand Management ensures customer capacity demands can be met. Discouraging IT service use during peak busy times falls into this description. Which process of the ITIL Service Design phase relates to ensuring cloud services are always accessible? - ✔ Availability and Service Continuity Management ensures that IT services are always accessible by managing risks that could impact IT service delivery. Choosing a cloud service that provides the same functionality as an in-house system applies to which ITIL life-cycle phase? - ✔ Evaluating functional equivalents of in-house IT systems relates to the Service Design phase. The manipulation of people to disclose confidential information defines what type of risk? - ✔ Tricking people to disclose sensitive information is referred to as social engineering. This could be as simple as an imposter posing as a help-desk member calling an end user and asking for password information. When evaluating cloud solutions, you conclude that some existing end-user software hosted on premises is not available as SaaS. What other options should you consider? - ✔ Cloud providers might have a SaaS offering that has the same functionality of the in- house software in use. This should be explored. Your company currently has six virtual servers hosted on premises using two clustered physical servers. The two physical servers on which the six virtual servers are running must be replaced. You have been asked to recommend the quickest solution to run the six virtual machines in the cloud instead of on the premises. What should you recommend? - ✔ Migrating existing virtual machines to the cloud is the quickest solution. Most cloud providers offer this solution. Why might a government agency be against storing its data in the cloud? - ✔ Some cloud providers have data centers in many countries, and data from one country might be replicated to another; this could present legal and jurisdiction ambiguities.

What new IT service risk is a result of cloud adoption? - ✔ Losing network connectivity means losing access to cloud IT services and data. Redundant network connections should be configured. Which of the following is a reason to migrate an application to the cloud? - ✔ Cloud elasticity means the application can grow or shrink relative to business needs. How does cloud adoption affect IT budgets? - ✔ Instead of a yearly or quarterly IT budget cycle, cloud elasticity means costs are much more variable.