Correct Answer: C

Explanation: Encryption is the process of transforming data into an unreadable format using a secret key or algorithm. Encryption is the best way to address the requirement of data confidentiality, as it ensures that only authorized parties can access and understand the data, while unauthorized parties cannot. Encryption can protect data at rest, in transit, and in use, which are the three possible states of data in cloud computing environments1. Encryption can also help comply with various regulations and standards that require data protection, such as GDPR, HIPAA, or PCI DSS2. Authorization, validation, and sanitization are not the best ways to address the requirement of data confidentiality, as they do not provide the same level of protection as encryption. Authorization is the process of granting or denying access to data or resources based on the identity or role of the user or system. Authorization can help control who can access the data, but it does not prevent unauthorized access or leakage of the data3. Validation is the process of verifying the accuracy, completeness, and quality of the data. Validation can help ensure the data is correct and consistent, but it does not prevent the data from being exposed or compromised4. Sanitization is the process of removing sensitive or confidential data from a storage device or a data set. Sanitization can help prevent the data from being recovered or reused, but it does not protect the data while it is stored or processed5. References: Data security and encryption best practices; An Overview of Cloud Cryptography; What is Data Validation? | Talend; Data Sanitization - an overview | ScienceDirect Topics; What is Encryption? | Cloudflare.

Correct Answer: A

Explanation: Self-service is one of the five essential characteristics of cloud computing, along with broad network access, resource pooling, rapid elasticity, and measured service1. Self-service enables cloud customers to provision and

manage cloud resources without requiring human interaction from the cloud service provider2. Self-service allows cloud customers to have more control, flexibility, and agility over their cloud environment, and to perform various tasks such as

building, decommissioning, scaling, monitoring, and configuring cloud resources according to their business needs and preferences3. Self- service is the best cloud characteristic to satisfy the business requirement of migrating mission-critical

applications to the cloud, as it would enable technicians to perform routine functions more efficiently and effectively, and to respond to changing demands and situations more quickly and dynamically.

Broad network access is another essential characteristic of cloud computing, which means that cloud resources are available over the network and can be accessed by diverse customer platforms, such as laptops, mobile phones, tablets,

etc1. Broad network access is an important feature of cloud computing, as it enables cloud customers to access their cloud resources anytime and anywhere, and to use different devices and methods to interact with the cloud. However,

broad network access is not the best cloud characteristic to satisfy the business requirement of migrating mission-critical applications to the cloud, as it does not directly relate to the ability of technicians to build, decommission, and perform

other routine functions on the cloud resources.

Elasticity is another essential characteristic of cloud computing, which means that cloud resources can be rapidly and dynamically scaled up or down according to the customer's demand1. Elasticity is a key benefit of cloud computing, as it

enables cloud customers to optimize the utilization and performance of their cloud resources, and to pay only for what they use. However, elasticity is not the best cloud characteristic to satisfy the business requirement of migrating mission-

critical applications to the cloud, as it does not directly relate to the ability of technicians to build, decommission, and perform other routine functions on the cloud resources.

Availability is not one of the five essential characteristics of cloud computing, but rather a quality attribute or a non-functional requirement of cloud computing. Availability refers to the degree to which a system or service is operational and

accessible when required4. Availability is a critical factor for cloud computing, especially for mission-critical applications, as it affects the reliability and continuity of the cloud service. However, availability is not the best cloud characteristic to

satisfy the business requirement of migrating mission-critical applications to the cloud, as it does not directly relate to the ability of technicians to build, decommission, and perform other routine functions on the cloud resources. References:

CompTIA Cloud Essentials+ CLO-002 Study Guide, Chapter 1:

Cloud Computing Concepts, pages 11-15.

Correct Answer: C

Explanation: Organizational agility is the ability of a company to quickly adapt to changing market and environmental conditions in a profitable and efficient way. Cloud computing can facilitate organizational agility by providing rapid provisioning of IT resources, scalability, flexibility, and cost-effectiveness. One of the benefits of cloud computing is reduced time to market, which means that a company can launch new products or services faster and more efficiently than its competitors. This can give the company a competitive edge and increase customer satisfaction. Reduced time to market is a characteristic of cloud computing that enables organizational agility, not a result of it. Therefore, it is the correct answer. References: Cloud Computing as a Drive for Strategic Agility in Organizations, How cloud computing can drive business agility, Agility on Cloud - A Vital Part of Cloud Computing

Correct Answer: A

Explanation: RDP stands for Remote Desktop Protocol, which is a protocol that allows a user to remotely access and control a Windows-based computer or virtual desktop from another device over a network. RDP can be used to provide access to a Windows VDI, which is a virtual desktop infrastructure that delivers Windows desktops and applications as a cloud service. RDP can provide a full graphical user interface, keyboard, mouse, and audio support, as well as features such as clipboard sharing, printer redirection, and file transfer. RDP can be accessed by using the built-in Remote Desktop Connection client in Windows, or by using third-party applications or web browsers. RDP is more suitable for accessing a Windows VDI than other protocols, such as VPN, SSH, or HTTPS, which may not support the same level of functionality, performance, or security. References: CompTIA Cloud Essentials+ Certification Exam Objectives1, CompTIA Cloud Essentials+ Study Guide, Chapter 6: Cloud Connectivity and Load Balancing2, How To Use The Remote Desktop Protocol To Connect To A Linux Server1

Correct Answer: B

Explanation: A hash value is a unique code that is generated by applying a mathematical algorithm to a piece of data. Hash values are used to ensure the integrity of data, which means that the data has not been altered or corrupted in any way. By comparing the hash value of the original data with the hash value of the received or stored data, one can verify that the data is identical and has not been tampered with. Hash values can also be used for digital signatures, which provide non-repudiation of data, meaning that the sender or owner of the data cannot deny its authenticity or origin. However, hash values alone do not provide confidentiality or availability of data, which are other aspects of data security. Confidentiality means that the data is protected from unauthorized access or disclosure, and availability means that the data is accessible and usable when needed. Hash values do not encrypt or hide the data, nor do they prevent data loss or downtime. References: CompTIA Cloud Essentials+ CLO-002 Study Guide, Chapter 5: Cloud Security Principles, Section 5.2: Data Security Concepts, Page 1471 and Ensuring Data Integrity with Hash Codes - .NET | Microsoft Learn