,WGU D415 Ethics and Data Management Quiz Review 2026 | 100+
Verified Q&A with Detailed Rationales | Western Governors University
Exam Prep – Graded A+
Question 1
What is the primary architectural characteristic that distinguishes
Software-Defined Networking (SDN) from traditional legacy
networking?
• A. It tightly couples the control plane and data plane inside each
individual physical router.
• B. It decouples the control plane from the data plane, enabling
centralized management and programmability.
• C. It relies exclusively on manual configuration via command-line
interfaces on every switch.
• D. It eliminates the need for any physical network hardware or
switches entirely.
Answer: B
Rationale: SDN separates the control plane (where routing and
forwarding decisions are determined) from the data plane (where
packets are moved), allowing administrators to centrally program
network behavior.
Question 2
,Which protocol is primarily responsible for defining the secure
communication between an SDN controller and forwarding devices
like OpenFlow switches?
• A. SNMP
• B. OpenFlow
• C. BGP
• D. OSPF
Answer: B
Rationale: OpenFlow serves as a core southbound interface protocol in
SDN, facilitating direct communication and rule provisioning between
the controller and network hardware.
Question 3
Which OpenStack component functions as a key manager that works
alongside Keystone authentication to secure internal application
secrets?
• A. Trove
• B. Designate
• C. Barbican
• D. Murano
Answer: C
Rationale: Barbican acts as OpenStack's key management service,
handling credentials, encryption keys, and digital certificates safely
within the environment.
, Question 4
How does Network Functions Virtualization (NFV) primarily transform
traditional network appliance deployments?
• A. It forces all network routing logic to run exclusively on
dedicated proprietary hardware boxes.
• B. It moves network functions from stand-alone hardware
appliances to software running on standard commercial servers.
• C. It completely replaces the need for virtual switches and
firewalls in modern cloud architectures.
• D. It converts layer 2 data frames directly into layer 1 analog
waveforms.
Answer: B
Rationale: NFV replaces dedicated hardware appliances with Virtual
Network Functions (VNFs) running on general-purpose virtualization
infrastructure, cutting deployment times and hardware overhead.
Question 5
Which OpenStack module provides a database-as-a-service solution
enabling users to provision and manage relational and non-relational
database engines?
• A. Murano
• B. Designate
• C. Trove
• D. Barbican
Verified Q&A with Detailed Rationales | Western Governors University
Exam Prep – Graded A+
Question 1
What is the primary architectural characteristic that distinguishes
Software-Defined Networking (SDN) from traditional legacy
networking?
• A. It tightly couples the control plane and data plane inside each
individual physical router.
• B. It decouples the control plane from the data plane, enabling
centralized management and programmability.
• C. It relies exclusively on manual configuration via command-line
interfaces on every switch.
• D. It eliminates the need for any physical network hardware or
switches entirely.
Answer: B
Rationale: SDN separates the control plane (where routing and
forwarding decisions are determined) from the data plane (where
packets are moved), allowing administrators to centrally program
network behavior.
Question 2
,Which protocol is primarily responsible for defining the secure
communication between an SDN controller and forwarding devices
like OpenFlow switches?
• A. SNMP
• B. OpenFlow
• C. BGP
• D. OSPF
Answer: B
Rationale: OpenFlow serves as a core southbound interface protocol in
SDN, facilitating direct communication and rule provisioning between
the controller and network hardware.
Question 3
Which OpenStack component functions as a key manager that works
alongside Keystone authentication to secure internal application
secrets?
• A. Trove
• B. Designate
• C. Barbican
• D. Murano
Answer: C
Rationale: Barbican acts as OpenStack's key management service,
handling credentials, encryption keys, and digital certificates safely
within the environment.
, Question 4
How does Network Functions Virtualization (NFV) primarily transform
traditional network appliance deployments?
• A. It forces all network routing logic to run exclusively on
dedicated proprietary hardware boxes.
• B. It moves network functions from stand-alone hardware
appliances to software running on standard commercial servers.
• C. It completely replaces the need for virtual switches and
firewalls in modern cloud architectures.
• D. It converts layer 2 data frames directly into layer 1 analog
waveforms.
Answer: B
Rationale: NFV replaces dedicated hardware appliances with Virtual
Network Functions (VNFs) running on general-purpose virtualization
infrastructure, cutting deployment times and hardware overhead.
Question 5
Which OpenStack module provides a database-as-a-service solution
enabling users to provision and manage relational and non-relational
database engines?
• A. Murano
• B. Designate
• C. Trove
• D. Barbican
