WGU D415 | Software-Defined Networking (SDN) |
Objective Assessment (Oa) 2026 Update | Questions
And Answers With Rationales
Which OSI model layer is responsible for the segment protocol data unit?
Network
Transport
Application
Data link
Accurate Answer : Transport
Which protocol in the software-defined networking (SDN) framework is responsible for defining
the communication between the controller and a network device?
OpenFlow
Telnet
Point-to-point
Address resolution
Accurate Answer : OpenFlow
Which network automation tool is open source?
BlueCat gateway
Chef
Ansible
,Puppet Enterprise
Accurate Answer : Ansible
What is a benefit of using network automation?
Backing up and restoring data
Using infrastructure as code to maintain a reliable state
Dynamic allocation of IP addresses
Boosting storage
Accurate Answer : Using infrastructure as code to maintain a reliable state
Which service introduces flexibility, dynamism, and automation into the management of
network objects?
Open source for network functions virtualization (NFV)
OpenStack
Network functions virtualization (NFV)
Software-defined networking (SDN)
Accurate Answer : Software-defined networking (SDN)
Which OpenStack unit provides authentication?
Cinder
Nova
,Keystone
Neutron
Accurate Answer : Keystone
Which interface in SDN allows the controller to communicate, interact, and manage forwarding
elements?
Westbound
Flow ID
Southbound
Eastbound
Accurate Answer : Southbound
Which OpenFlow SDN controller has a multi-threaded, cross-platform, and modular emphasis?
FlowVisor
OpenDaylight (ODL) Project
Floodlight
Beacon
Accurate Answer : Beacon
Which port number is used as the destination of a server by Dynamic Host Configuration
Protocol?
23
53
, 67
68
Accurate Answer : 67
Which IPv6 address identifies each network interface?
Multicast
Broadcast
Anycast
Unicast
Accurate Answer : Anycast
Which network virtualization (NV) approach refers to a logical local area network (LAN) based
on physical LANs?
Virtual private networks (VPN)
Virtual private LAN services (VPLS)
Virtual LANs (VLANs)
Wide area network (WAN)
Accurate Answer : Virtual LANs (VLANs)
Which network virtualization benefit involves using virtual networks to create slices to reserve
networking resources?
Debugging and intrusion detection
Resource optimization
Mobility
Objective Assessment (Oa) 2026 Update | Questions
And Answers With Rationales
Which OSI model layer is responsible for the segment protocol data unit?
Network
Transport
Application
Data link
Accurate Answer : Transport
Which protocol in the software-defined networking (SDN) framework is responsible for defining
the communication between the controller and a network device?
OpenFlow
Telnet
Point-to-point
Address resolution
Accurate Answer : OpenFlow
Which network automation tool is open source?
BlueCat gateway
Chef
Ansible
,Puppet Enterprise
Accurate Answer : Ansible
What is a benefit of using network automation?
Backing up and restoring data
Using infrastructure as code to maintain a reliable state
Dynamic allocation of IP addresses
Boosting storage
Accurate Answer : Using infrastructure as code to maintain a reliable state
Which service introduces flexibility, dynamism, and automation into the management of
network objects?
Open source for network functions virtualization (NFV)
OpenStack
Network functions virtualization (NFV)
Software-defined networking (SDN)
Accurate Answer : Software-defined networking (SDN)
Which OpenStack unit provides authentication?
Cinder
Nova
,Keystone
Neutron
Accurate Answer : Keystone
Which interface in SDN allows the controller to communicate, interact, and manage forwarding
elements?
Westbound
Flow ID
Southbound
Eastbound
Accurate Answer : Southbound
Which OpenFlow SDN controller has a multi-threaded, cross-platform, and modular emphasis?
FlowVisor
OpenDaylight (ODL) Project
Floodlight
Beacon
Accurate Answer : Beacon
Which port number is used as the destination of a server by Dynamic Host Configuration
Protocol?
23
53
, 67
68
Accurate Answer : 67
Which IPv6 address identifies each network interface?
Multicast
Broadcast
Anycast
Unicast
Accurate Answer : Anycast
Which network virtualization (NV) approach refers to a logical local area network (LAN) based
on physical LANs?
Virtual private networks (VPN)
Virtual private LAN services (VPLS)
Virtual LANs (VLANs)
Wide area network (WAN)
Accurate Answer : Virtual LANs (VLANs)
Which network virtualization benefit involves using virtual networks to create slices to reserve
networking resources?
Debugging and intrusion detection
Resource optimization
Mobility
