WGU D415 OBJECTIVE ASSESSMENT FINAL NEWEST
2026 ACTUAL EXAM| D415 SOFTWARE-DEFINED
NETWORKING (SDN) OA FINAL REVIEW WITH 200
REAL EXAM QUESTTIONS AND CORRECT VERIFIED
ANSWERS/ ALREADY GRADED A+ (MOST RECENT!!)
What is the purpose of a Flow Table in an OpenFlow switch?
A) To store encryption keys for TLS sessions
B) To log all network traffic for auditing
C) To store rules (flow entries) used to match and forward incoming
packets
D) To manage VLAN configurations on the switch – Correct Answer -
C) To store rules (flow entries) used to match and forward incoming
packets
What does NFV stand for?
A) Network Forwarding Virtualization
B) Non-Functional Validation
C) Network Function Virtualization
D) Next-generation Firewall Validation – Correct Answer - C) Network
Function Virtualization
Which SDN controller is an open-source platform designed for carrier-
grade networks?
pg. 1
,A) VMware NSX
B) OpenDaylight
C) Cisco ACI
D) ONOS – Correct Answer - D) ONOS
What is the purpose of YANG in networking?
A) A programming language used to write SDN applications
B) A routing protocol for cloud environments
C) A data modeling language used with NETCONF/RESTCONF to
define the structure of network configuration data
D) A tool for encrypting OpenFlow messages – Correct Answer - C) A
data modeling language used with NETCONF/RESTCONF to define the
structure of network configuration data
Which tool is agentless and uses YAML-based playbooks for network
automation?
A) Puppet
B) Chef
C) Terraform
D) Ansible – Correct Answer - D) Ansible
What is Service Function Chaining (SFC)?
A) The process of linking multiple SDN controllers together
pg. 2
,B) A method of chaining BGP routing policies
C) An IETF framework for defining ordered sequences of network
service functions for traffic to traverse
D) A technique for chaining VLANs across multiple switches – Correct
Answer - C) An IETF framework for defining ordered sequences of
network service functions for traffic to traverse
What does P4 enable in SDN?
A) Layer 4 packet filtering using ACLs
B) Programming of the data plane beyond OpenFlow's capabilities,
defining how devices process packets
C) A fourth-generation WAN protocol
D) Priority-based packet queuing at Layer 4 – Correct Answer - B)
Programming of the data plane beyond OpenFlow's capabilities,
defining how devices process packets
What is the function of OpenStack Nova?
A) Provides networking services and manages virtual networks
B) Stores and retrieves virtual machine disk images
C) Manages identity and authentication for OpenStack services
D) Provisions and manages virtual machine instances across compute
nodes – Correct Answer - D) Provisions and manages virtual machine
instances across compute nodes
pg. 3
, Which OpenStack service provides identity and authentication?
A) Nova
B) Glance
C) Keystone
D) Cinder – Correct Answer - C) Keystone
What is OpenStack Glance used for?
A) Monitoring and metering OpenStack resource usage
B) Providing persistent block-level storage volumes
C) Storing and retrieving virtual machine disk images
D) Providing DNS-as-a-service – Correct Answer - C) Storing and
retrieving virtual machine disk images
What is the purpose of OpenStack Heat?
A) To monitor resource usage for billing purposes
B) To automate the deployment of cloud resources using HOT templates,
similar to Terraform
C) To manage physical server provisioning
D) To provide database-as-a-service – Correct Answer - B) To automate
the deployment of cloud resources using HOT templates, similar to
Terraform
What does HOT stand for in OpenStack?
pg. 4
2026 ACTUAL EXAM| D415 SOFTWARE-DEFINED
NETWORKING (SDN) OA FINAL REVIEW WITH 200
REAL EXAM QUESTTIONS AND CORRECT VERIFIED
ANSWERS/ ALREADY GRADED A+ (MOST RECENT!!)
What is the purpose of a Flow Table in an OpenFlow switch?
A) To store encryption keys for TLS sessions
B) To log all network traffic for auditing
C) To store rules (flow entries) used to match and forward incoming
packets
D) To manage VLAN configurations on the switch – Correct Answer -
C) To store rules (flow entries) used to match and forward incoming
packets
What does NFV stand for?
A) Network Forwarding Virtualization
B) Non-Functional Validation
C) Network Function Virtualization
D) Next-generation Firewall Validation – Correct Answer - C) Network
Function Virtualization
Which SDN controller is an open-source platform designed for carrier-
grade networks?
pg. 1
,A) VMware NSX
B) OpenDaylight
C) Cisco ACI
D) ONOS – Correct Answer - D) ONOS
What is the purpose of YANG in networking?
A) A programming language used to write SDN applications
B) A routing protocol for cloud environments
C) A data modeling language used with NETCONF/RESTCONF to
define the structure of network configuration data
D) A tool for encrypting OpenFlow messages – Correct Answer - C) A
data modeling language used with NETCONF/RESTCONF to define the
structure of network configuration data
Which tool is agentless and uses YAML-based playbooks for network
automation?
A) Puppet
B) Chef
C) Terraform
D) Ansible – Correct Answer - D) Ansible
What is Service Function Chaining (SFC)?
A) The process of linking multiple SDN controllers together
pg. 2
,B) A method of chaining BGP routing policies
C) An IETF framework for defining ordered sequences of network
service functions for traffic to traverse
D) A technique for chaining VLANs across multiple switches – Correct
Answer - C) An IETF framework for defining ordered sequences of
network service functions for traffic to traverse
What does P4 enable in SDN?
A) Layer 4 packet filtering using ACLs
B) Programming of the data plane beyond OpenFlow's capabilities,
defining how devices process packets
C) A fourth-generation WAN protocol
D) Priority-based packet queuing at Layer 4 – Correct Answer - B)
Programming of the data plane beyond OpenFlow's capabilities,
defining how devices process packets
What is the function of OpenStack Nova?
A) Provides networking services and manages virtual networks
B) Stores and retrieves virtual machine disk images
C) Manages identity and authentication for OpenStack services
D) Provisions and manages virtual machine instances across compute
nodes – Correct Answer - D) Provisions and manages virtual machine
instances across compute nodes
pg. 3
, Which OpenStack service provides identity and authentication?
A) Nova
B) Glance
C) Keystone
D) Cinder – Correct Answer - C) Keystone
What is OpenStack Glance used for?
A) Monitoring and metering OpenStack resource usage
B) Providing persistent block-level storage volumes
C) Storing and retrieving virtual machine disk images
D) Providing DNS-as-a-service – Correct Answer - C) Storing and
retrieving virtual machine disk images
What is the purpose of OpenStack Heat?
A) To monitor resource usage for billing purposes
B) To automate the deployment of cloud resources using HOT templates,
similar to Terraform
C) To manage physical server provisioning
D) To provide database-as-a-service – Correct Answer - B) To automate
the deployment of cloud resources using HOT templates, similar to
Terraform
What does HOT stand for in OpenStack?
pg. 4
