OpenStack OpenStack Networking (Neutron) 2

Question 1

Which Neutron plug-in mechanism uses software-defined networking (SDN) with virtual switches?

Accepted Answer

Open vSwitch (OVS) ML2 driver

Answer

LinuxBridge ML2 driver

Answer

MACVLAN driver

Answer

SR-IOV driver

Question 2

What does ML2 stand for in the context of Neutron's plugin architecture?

Accepted Answer

Modular Layer 2

Answer

Multi-Layer 2

Answer

Managed Linux 2

Answer

Multi-Link 2

Question 3

In Neutron, what is a 'subnet' defined as?

Accepted Answer

A block of IP addresses and associated configuration assigned to a network

Answer

A virtual router connecting two networks

Answer

A physical NIC bond in the hypervisor

Answer

A firewall zone separating tenant traffic

Question 4

Which Neutron agent handles DHCP requests for VMs on tenant networks?

Accepted Answer

neutron-dhcp-agent

Answer

neutron-l3-agent

Answer

neutron-metadata-agent

Answer

neutron-linuxbridge-agent

Question 5

What is VXLAN in the context of OpenStack Neutron overlay networks?

Accepted Answer

A tunneling protocol that encapsulates L2 frames in UDP to extend networks over L3

Answer

A VLAN tagging extension for more than 4096 networks

Answer

A Neutron API extension for external network access

Answer

A storage network protocol used by Cinder

Question 6

What is the role of the Neutron metadata agent?

Accepted Answer

It relays instance metadata requests from VMs to the Nova metadata API

Answer

It manages Neutron database metadata records

Answer

It stores network topology metadata in Zookeeper

Answer

It provides IPAM services to subnets