Architecture and Services Flashcards
6 cards from real COA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Architecture and Services flashcards as text
Which OpenStack component is responsible for managing compute resources?
Answer: Nova
Nova is the primary compute service in OpenStack, responsible for managing and provisioning virtual machines (instances). It handles tasks such as scheduling, launching, and terminating instances, making it the core component for compute resource management within the cloud environment.
What is the purpose of Keystone in OpenStack architecture?
Answer: Identity and authentication
Keystone serves as the identity service for OpenStack, providing authentication and authorization for all OpenStack services. It manages users, tenants (projects), and roles, ensuring that only authorized users can access specific resources and services within the cloud.
Which service handles image management in OpenStack?
Answer: Glance
Glance is the image service in OpenStack, responsible for storing, managing, and retrieving virtual machine images. These images serve as templates for creating new instances, and Glance allows users to upload, register, and discover available images for their cloud deployments.
What role does Neutron play in OpenStack?
Answer: Provides networking services
Neutron is the OpenStack networking service, offering network connectivity as a service for virtual machines. It allows users to define network topologies, create virtual networks, subnets, routers, and manage IP addresses, enabling communication between instances and with external networks.
Which component provides a web-based user interface for OpenStack?
Answer: Horizon
Horizon is the official web-based dashboard for OpenStack, providing a graphical user interface (GUI) for users and administrators. It allows for easy management of OpenStack resources such as instances, images, networks, and volumes through a web browser, simplifying cloud operations.
What is the function of Cinder in OpenStack?
Answer: Block storage service
Cinder is the block storage service for OpenStack, providing persistent block storage volumes to instances. These volumes can be attached to virtual machines, similar to a physical hard drive, allowing for data persistence even if the instance is terminated, and supporting various storage backends.