COA Architecture and Services 1 — Questions and Answers
Question 1: Which OpenStack component is responsible for managing compute resources?
- Cinder
- Neutron
- Nova (Correct answer)
- Glance
Correct 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.
Question 2: What is the purpose of Keystone in OpenStack architecture?
- Image storage
- Object storage
- Identity and authentication (Correct answer)
- Networking
Correct 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.
Question 3: Which service handles image management in OpenStack?
- Horizon
- Glance (Correct answer)
- Neutron
- Swift
Correct 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.
Question 4: What role does Neutron play in OpenStack?
- Handles orchestration
- Manages compute scheduling
- Provides networking services (Correct answer)
- Authenticates users
Correct 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.
Question 5: Which component provides a web-based user interface for OpenStack?
- Swift
- Horizon (Correct answer)
- Heat
- Keystone
Correct 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.
Question 6: What is the function of Cinder in OpenStack?
- Identity management
- Object storage
- Compute resource management
- Block storage service (Correct answer)
Correct 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.
COA Architecture and Services 1
Which OpenStack component is responsible for managing compute resources?