In which two cloud computing service models are the vendors responsible for vulnerability and patch management of the underlying operating system? (Choose two.)
In cloud computing, there are three main service models: Software as a Service (SaaS), Platform as a Service (PaaS), and Infrastructure as a Service (IaaS). Each model defines the level of responsibility and control that the cloud provider and the cloud customer have over the cloud resources and services. The cloud provider is responsible for vulnerability and patch management of the underlying operating system in SaaS and PaaS models, while the cloud customer is responsible for it in IaaS model. In SaaS, the cloud provider delivers software applications over the internet and manages all aspects of the cloud infrastructure, platform, and application. The cloud customer only needs to access the software through a web browser or an API. In PaaS, the cloud provider offers a platform for developing, testing, and deploying applications and manages the cloud infrastructure and operating system. The cloud customer can use the platform tools and services to create and run their own applications. In IaaS, the cloud provider supplies the basic cloud infrastructure, such as servers, storage, and networking, and the cloud customer can provision and configure their own operating system, middleware, and applications. References: Cloud Computing Service Models, Cloud Security Fundamentals - Module 2: Cloud Computing Models, Palo Alto Networks Certified Cybersecurity Entry-level Technician (PCCET)
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