Interview Questions and Answers

An Availability Zone in Nova represents a set of compute resources within a region. It allows users to place instances in specific zones to achieve high availability and redundancy.

The 'swift-ring-builder' tool is used to manage the partitioning and distribution of data across the Swift object storage cluster. It helps in maintaining and updating the ring structure.

Network namespaces in Neutron provide isolated network environments within the same host. They enable the creation of multiple virtual networks on a single physical host.

Cross-Origin Resource Sharing (CORS) in Swift is a mechanism that allows resources, such as object storage, to be requested from a different domain than the one that served the original resource.