Which nodes are available in a two-node OpenStack architecture? (Select 2 choices.)

• 350-401 : All Parts

Explanation:
The compute node and the controller node are available in a two-node OpenStack architecture. OpenStack is an opensource cloud computing platform. Each OpenStack modular component is responsible for a particular function, and each component has a code name. The following list contains several of the most popular OpenStack components:
-Nova -OpenStack Compute: manages pools of computer resources
-Neutron -OpenStack Networking: manages networking and addressing
-Cinder -OpenStack Block Storage: manages blocklevel storage devices
-Glance -OpenStack Image: manages disk and server images
-Swift -OpenStack Object Storage: manages redundant storage systems
-Keystone -OpenStack Identity: is responsible for authentication
-Horizon -OpenStack Dashboard: provides a graphical user interface (GUI)
-Ceilometer -OpenStackTelemetry: provides counterbased tracking that can be used for customer usage billing

The compute node in a twonode OpenStack architecture consists of the following services:

-Nova Hypervisor
-Kernelbased Virtual Machine (KVM) or Quick Emulator (QEMU)
-Nova Networking
-Ceilometer Agent

The controller node in a twonode OpenStack architecture consists of the following services:
-Keystone
-Glance
-Nova Management
-Horizon
-Cinder
-Swift
-Ceilometer Core

A threenode OpenStack architecture adds the network node and offloads networking functionality to the Neutron component. The network node consists of several Neutron services:

-Neutron Modular Layer 2 (ML2) PlugIn
-Neutron Layer 2 Agent
-Neutron Layer 3 Agent
-Neutron Dynamic Host Configuration Protocol (DHCP) Agent

The compute node in a threenode OpenStack architecture removes Nova Networking and adds the Neutron Layer 2 Agent and the Neutron ML2 PlugIn. The controller node in a threenode OpenStack architecture adds the Neutron Server and the Neutron ML2 PlugIn.