Managing-Cloud-Security Exam Dumps : WGU Managing Cloud Security (JY02, GZO1)

Reliability in cloud design ensures workloads can recover quickly from disruptions and continue operating as expected. This concept focuses on high availability, fault tolerance, and disaster recovery. Reliability requires implementing redundancy, backup strategies, and robust monitoring.

Security ensures data protection, operational excellence covers continuous improvement, and resource hierarchy refers to organizational structures, but none focus specifically on availability and resilience.

By prioritizing reliability, organizations design cloud architectures capable of withstanding failures at multiple layers—compute, storage, networking, and even regions. This design principle ensures customer trust and compliance with service-level agreements.

In the Software as a Service (SaaS) model, the cloud service provider bears the greatest responsibility for security. Managing Cloud documentation explains that in SaaS environments, the provider manages the application, operating system, middleware, infrastructure, and often many security controls.

Customers primarily focus on user access, data classification, and configuration of application-level settings, while the provider ensures platform availability, patching, vulnerability management, and infrastructure security. This shared responsibility model places the largest security burden on the provider in SaaS compared to other service models.

In PaaS and IaaS, customers assume increasing responsibility for securing operating systems, applications, and configurations. DBaaS still requires customer involvement in access control and data management. Therefore, SaaS is the correct answer.

Infrastructure as a Service (IaaS) delivers fundamental computing resources over the cloud. These include virtual machines, block storage, networking, and load balancers. Customers use these resources to build and manage custom IT solutions, while the provider manages the underlying hardware.

PaaS abstracts infrastructure further, providing a development environment for applications without requiring infrastructure management. SaaS delivers fully functional applications over the internet. NaaS is a narrower category focusing on network delivery.

IaaS is the correct answer because it gives maximum flexibility and control compared to the other models, allowing organizations to build tailored environments. It also requires customers to manage operating systems, middleware, and runtime security, making shared responsibility an essential part of the model.