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WGU D415 Software-Defined Networking (SDN) Objective Assessment | 120+ Exam Questions & 100% Verified Answers | SDN, NFV, OpenStack, OpenFlow, Network Automation & Cybersecurity | Western Governors University

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Prepare for the WGU D415 Software-Defined Networking (SDN) Objective Assessment with this comprehensive study guide featuring 120+ exam questions and 100% verified answers covering the essential concepts of software-defined networking, network virtualization, automation, cloud networking, and network security. This resource provides in-depth coverage of OSI model layers, TCP/IP, OpenFlow, SDN architecture, northbound and southbound APIs, OpenDaylight, Beacon, OpenStack modules (Keystone, Nova, Neutron, Glance, Swift, Barbican, Cinder), Network Functions Virtualization (NFV), Virtual Network Functions (VNFs), virtual LANs (VLANs), VXLAN, VPNs, AAA, RBAC, automation tools including Ansible, Chef, and Puppet, network programmability, telemetry, logging, intrusion detection and prevention systems (IDS/IPS), firewalls, bastion hosts, SDN microsegmentation, virtualization security, NIST security frameworks, Common Vulnerability Scoring System (CVSS), vulnerability scanning, risk management, cybersecurity principles, and cloud networking technologies. It also reinforces high-yield Objective Assessment topics, real-world networking scenarios, protocol selection, security best practices, and infrastructure automation concepts commonly tested in the WGU D415 Objective Assessment. Presented in a structured question-and-answer format, this study guide is designed to strengthen technical understanding and improve performance on the WGU D415 Objective Assessment, networking certification preparation, and enterprise networking courses. Students will reinforce their knowledge of software-defined networking architectures, controller communication, network automation, infrastructure as code, OpenStack services, virtualization technologies, network security frameworks, authentication and authorization models, SDN security, cloud infrastructure, and modern enterprise networking practices. With comprehensive coverage of networking fundamentals, virtualization, automation, security operations, and cloud-based networking concepts, this resource serves as an essential review tool for mastering Software-Defined Networking and succeeding on the WGU D415 Objective Assessment. Relevant Students: WGU D415 Software-Defined Networking students Western Governors University students Cybersecurity students Network Engineering students Cloud Computing students Information Technology students Computer Science students Systems Administration students Network Administration students DevOps students CCNA candidates CompTIA Network+ candidates CompTIA Security+ candidates Cloud Infrastructure professionals IT professionals preparing for networking certifications APA References Cisco Systems. (2023). Cisco Software-Defined Networking (SDN) Architecture Guide. National Institute of Standards and Technology. (2024). Security and Privacy Controls for Information Systems and Organizations (NIST SP 800-53 Rev. 5). National Institute of Standards and Technology. (2024). Security Recommendations for Hypervisor Deployment (NIST SP 800-125 Series). Open Infrastructure Foundation. (2024). OpenStack Documentation. Open Networking Foundation. (2024). Software-Defined Networking and OpenFlow Standards. Stallings, W. (2023). Foundations of Modern Networking: SDN, NFV, QoE, IoT, and Cloud (2nd ed.). Addison-Wesley. Keywords WGU D415, WGU D415 Objective Assessment, Software Defined Networking, SDN, OpenFlow, OpenStack, Network Functions Virtualization, NFV, Virtual Network Functions, VNF, network automation, Ansible, Chef, Puppet, infrastructure as code, OSI model, TCP/IP, transport layer, OpenDaylight, Beacon controller, southbound API, northbound API, Keystone, Neutron, Nova, Swift, Glance, Barbican, Cinder, VLAN, VXLAN, VPN, L2TP, SDN controller, network virtualization, cloud networking, telemetry, logging, AAA, authentication, authorization, accounting, RBAC, IDS, IPS, firewall, bastion host, virtual firewall, microsegmentation, zero trust, NIST, CVSS, vulnerability scanning, Nessus, cybersecurity, cloud infrastructure, enterprise networking, Objective Assessment, exam questions, verified answers, study guide

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WGU D415 SDN | OA | Objective
Assessment 2026 Exam
Questions and Correct
Answers | New Update



Which OSI model layer is responsible for the segment protocol data

unit?




Network

Transport

Application


Data link - 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 - ANSWER ✔✔OpenFlow


Which network automation tool is open source?




BlueCat gateway

Chef

Ansible


Puppet Enterprise - 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 - 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) - ANSWER ✔✔Software-defined

networking (SDN)

Which OpenStack unit provides authentication?




Cinder

Nova

Keystone


Neutron - ANSWER ✔✔Keystone




COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
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3

, Which interface in SDN allows the controller to communicate, interact,

and manage forwarding elements?




Westbound

Flow ID

Southbound


Eastbound - ANSWER ✔✔Southbound


Which OpenFlow SDN controller has a multi-threaded, cross-platform,

and modular emphasis?




FlowVisor

OpenDaylight (ODL) Project

Floodlight


Beacon - ANSWER ✔✔Beacon


Which port number is used as the destination of a server by Dynamic

Host Configuration Protocol?




23

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