WGU D415 SOFTWARE DEFINED
NETWORKING COMPREHENSIVE STUDY
GUIDE 2026 FULL QUESTIONS AND
SOLUTIONS GRADED A+
◍ Software-Defined Networking (SDN).
Answer: Seeks to introduce flexibility, dynamism and automation into the
deployment and management of network object by decoupling and
centralizing the network intelligence from the packet-forwarding process.
◍ Network Functions Virtualization (NFV).
Answer: The concept of moving dedicated network functions from
stand-alone appliances to software running on any white box or Commercial
off-the-Shelf (COTS) server.
◍ Virtual Network Functions (VNFs).
Answer: The software implementations of network functions that preform
specific network tasks.
◍ NFV Infrastructure (NFVI).
Answer: The entirety of the hardware and software components that build
the environment where the VNFs are deployed.
◍ NFV Management and Orchestration (NFV-MANO).
Answer: Consists of all functional blocks, data repositories, reference points,
and interfaces that are used for managing and orchestrating VNFs and the
NFVI.
◍ Open Platform (OPNFV).
Answer: A collaborative open-source platform that seeks to develop NFV
and shape its evolution.
, ◍ OpenStack.
Answer: An open-source cloud computing platform that has high market
penetration.
◍ OpenStack Core Modules.
Answer: Nova, Glance, Keystone, Cinder, Swift, Neutron.
◍ OpenStack Nova.
Answer: Used to create and delete compute instances as required.
◍ OpenStack Glance.
Answer: Synchronizes and maintains VM images across the compute
cluster.
◍ OpenStack Keystone.
Answer: Provides authentication for accessing all of OpenStack's services.
◍ OpenStack Cinder.
Answer: Provides block storage used as storage volumes for VMs.
◍ OpenStack Swift.
Answer: Provides object storage that is used to store large amounts of static
data in a cluster.
◍ OpenStack Neutron.
Answer: Allows the different compute instances and storage nodes to
communicate with each other.
◍ OpenStack Management Modules.
Answer: Horizon, Heat, Celiometer, Ironic, Congress, Designate.
◍ OpenStack Horizon.
Answer: Provides a GUI dashboard, and is by far the most widely deployed
management module.
◍ OpenStack Heat.
Answer: Helps expedite orchestration of applications across multiple
compute instances by using templates.
NETWORKING COMPREHENSIVE STUDY
GUIDE 2026 FULL QUESTIONS AND
SOLUTIONS GRADED A+
◍ Software-Defined Networking (SDN).
Answer: Seeks to introduce flexibility, dynamism and automation into the
deployment and management of network object by decoupling and
centralizing the network intelligence from the packet-forwarding process.
◍ Network Functions Virtualization (NFV).
Answer: The concept of moving dedicated network functions from
stand-alone appliances to software running on any white box or Commercial
off-the-Shelf (COTS) server.
◍ Virtual Network Functions (VNFs).
Answer: The software implementations of network functions that preform
specific network tasks.
◍ NFV Infrastructure (NFVI).
Answer: The entirety of the hardware and software components that build
the environment where the VNFs are deployed.
◍ NFV Management and Orchestration (NFV-MANO).
Answer: Consists of all functional blocks, data repositories, reference points,
and interfaces that are used for managing and orchestrating VNFs and the
NFVI.
◍ Open Platform (OPNFV).
Answer: A collaborative open-source platform that seeks to develop NFV
and shape its evolution.
, ◍ OpenStack.
Answer: An open-source cloud computing platform that has high market
penetration.
◍ OpenStack Core Modules.
Answer: Nova, Glance, Keystone, Cinder, Swift, Neutron.
◍ OpenStack Nova.
Answer: Used to create and delete compute instances as required.
◍ OpenStack Glance.
Answer: Synchronizes and maintains VM images across the compute
cluster.
◍ OpenStack Keystone.
Answer: Provides authentication for accessing all of OpenStack's services.
◍ OpenStack Cinder.
Answer: Provides block storage used as storage volumes for VMs.
◍ OpenStack Swift.
Answer: Provides object storage that is used to store large amounts of static
data in a cluster.
◍ OpenStack Neutron.
Answer: Allows the different compute instances and storage nodes to
communicate with each other.
◍ OpenStack Management Modules.
Answer: Horizon, Heat, Celiometer, Ironic, Congress, Designate.
◍ OpenStack Horizon.
Answer: Provides a GUI dashboard, and is by far the most widely deployed
management module.
◍ OpenStack Heat.
Answer: Helps expedite orchestration of applications across multiple
compute instances by using templates.
