What is a key capability or characteristic of PaaS?
Correct Answer: C
Explanation PaaS should have the following key capabilities and characteristics: - Support multiple languages and frameworks: PaaS should support multiple programming languages and frameworks, thus enabling the developers to code in whichever language they prefer or the design requirements specify. In recent times, significant strides and efforts have been taken to ensure that open source stacks are both supported and utilized, thus reducing "lock-in" or issues with interoperability when changing CSPs. - Multiple hosting environments: The ability to support a wide variety of underlying hosting environments for the platform is key to meeting customer requirements and demands. Whether public cloud, private cloud, local hypervisor, or bare metal, supporting multiple hosting environments allows the application developer or administrator to migrate the application when and as required. This can also be used as a form of contingency and continuity and to ensure the ongoing availability. - Flexibility: Traditionally, platform providers provided features and requirements that they felt suited the client requirements, along with what suited their service offering and positioned them as the provider of choice, with limited options for the customers to move easily. This has changed drastically, with extensibility and flexibility now afforded to meeting the needs and requirements of developer audiences. This has been heavily influenced by open source, which allows relevant plug-ins to be quickly and efficiently introduced into the platform. - Allow choice and reduce lock-in: PaaS learns from previous horror stories and restrictions, proprietary meant red tape, barriers, and restrictions on what developers could do when it came to migration or adding features and components to the platform. Although the requirement to code to specific APIs was made available by the providers, they could run their apps in various environments based on commonality and standard API structures, ensuring a level of consistency and quality for customers and users. - Ability to auto-scale: This enables the application to seamlessly scale up and down as required to accommodate the cyclical demands of users. The platform will allocate resources and assign these to the application as required. This serves as a key driver for any seasonal organizations that experience spikes and drops in usage.
Question 708
Although much of the attention given to data security is focused on keeping data private and only accessible by authorized individuals, of equal importance is the trustworthiness of the data. Which concept encapsulates this?
Correct Answer: B
Explanation/Reference: Explanation: Integrity refers to the trustworthiness of data and whether its format and values are true and have not been corrupted or otherwise altered through unauthorized means. Confidentiality refers to keeping data from being access or viewed by unauthorized parties. Accessibility means that data is available and ready when needed by a user or service. Validity can mean a variety of things that are somewhat similar to integrity, but it's not the most appropriate answer in this case.
Question 709
Which of the cloud deployment models is used by popular services such as iCloud, Dropbox, and OneDrive?
Correct Answer: B
Explanation/Reference: Explanation: Popular services such as iCloud, Dropbox, and OneDrive are all publicly available and are open to any user for free, with possible add-on services offered for a cost.
Question 710
What must SOAP rely on for security?
Correct Answer: A
Simple Object Access Protocol (SOAP) uses Extensible Markup Language (XML) for passing data, and it must rely on the encryption of those data packages for security.
