WGU D415 SDN and Network Security Exam Review 2026 |
Verified Q&A | Graded A+
1. What does NFV stand for in the context of network services?
Network frequency variation
Network framework validation
Network function verification
Network functions virtualization
2. Describe how detection and response mechanisms function within a multi-
layer security system.
Detection and response mechanisms monitor network activity to
identify threats and initiate appropriate responses.
Detection and response mechanisms are solely responsible for data
encryption.
Detection and response mechanisms recover data after a breach has
occurred.
Detection and response mechanisms only focus on preventing attacks
before they occur.
3. Describe the role of Keystone in the OpenStack architecture.
Keystone serves as the identity service for OpenStack, managing
authentication and authorization for users and services.
Keystone provides networking services within the OpenStack
environment.
Keystone is a module that handles compute resources in OpenStack.
, Keystone is responsible for managing storage resources in
OpenStack.
4. Identify the application security threat that occurs whenever an application
includes untrusted data in a new web page without proper validation or
escaping or whenever it updates an existing web page with user-supplied
data.
A2 - broken authentication
A7 - cross-site scripting (XSS)
A10 - insufficient logging and monitoring
A8 - insecure deserialization
5. Describe the role of OpenFlow in a Software-Defined Networking
environment.
OpenFlow is a security protocol that encrypts data between network
devices.
OpenFlow allows the SDN controller to communicate with and
manage network devices like switches and routers.
OpenFlow is a protocol for monitoring network performance.
OpenFlow is used to transfer files securely between servers.
6. If a network administrator strengthens the detection and response
mechanisms after an attack, what impact might this have on future security
incidents?
It may reduce the likelihood of successful attacks by improving
threat identification and response.
It may slow down network performance due to increased monitoring.
It may eliminate the need for preventative mechanisms entirely.
, It may increase the number of false positives in security alerts.
7. In a scenario where a company implements SDN, how might this change their
approach to network security management?
The company can consolidate security functions onto fewer devices,
improving efficiency and response times.
The company will need to eliminate all existing security protocols.
The company must deploy more devices to handle security functions
separately.
The company will have less control over security due to increased
complexity.
8. Describe how Secure Boot contributes to the security of a Virtual Network
Function (VNF).
Secure Boot allows for dynamic scaling of network resources.
Secure Boot enhances data transmission speeds.
Secure Boot verifies the authenticity of the code before it is
executed, preventing unauthorized modifications.
Secure Boot manages the lifecycle of virtual machines.
9. What is the term used to describe the strategy that enhances SDN security by
using multiple controllers?
Logging
Controller consolidation
Virtualization
Controller diversity
, 10. Describe how proactive and reactive security recovery mechanisms
contribute to the overall security framework in SDN.
They limit the number of controllers managing switches.
They create static associations between controllers and devices.
They focus solely on reactive measures without proactive strategies.
They ensure that services remain available and recover quickly
from security incidents.
11. In a scenario where a network application is experiencing cross-site scripting
attacks, which plane should be analyzed for potential security flaws?
Management
Control
Application
Data
12. In a scenario where a company is experiencing network congestion, which
network virtualization benefit could be leveraged to improve the situation?
Debugging and intrusion detection
Mobility
Testing/quality assurance
Resource optimization
13. What does VLAN stand for in networking?
Virtual Layer Area Network
Virtual Long Area Network
Verified Q&A | Graded A+
1. What does NFV stand for in the context of network services?
Network frequency variation
Network framework validation
Network function verification
Network functions virtualization
2. Describe how detection and response mechanisms function within a multi-
layer security system.
Detection and response mechanisms monitor network activity to
identify threats and initiate appropriate responses.
Detection and response mechanisms are solely responsible for data
encryption.
Detection and response mechanisms recover data after a breach has
occurred.
Detection and response mechanisms only focus on preventing attacks
before they occur.
3. Describe the role of Keystone in the OpenStack architecture.
Keystone serves as the identity service for OpenStack, managing
authentication and authorization for users and services.
Keystone provides networking services within the OpenStack
environment.
Keystone is a module that handles compute resources in OpenStack.
, Keystone is responsible for managing storage resources in
OpenStack.
4. Identify the application security threat that occurs whenever an application
includes untrusted data in a new web page without proper validation or
escaping or whenever it updates an existing web page with user-supplied
data.
A2 - broken authentication
A7 - cross-site scripting (XSS)
A10 - insufficient logging and monitoring
A8 - insecure deserialization
5. Describe the role of OpenFlow in a Software-Defined Networking
environment.
OpenFlow is a security protocol that encrypts data between network
devices.
OpenFlow allows the SDN controller to communicate with and
manage network devices like switches and routers.
OpenFlow is a protocol for monitoring network performance.
OpenFlow is used to transfer files securely between servers.
6. If a network administrator strengthens the detection and response
mechanisms after an attack, what impact might this have on future security
incidents?
It may reduce the likelihood of successful attacks by improving
threat identification and response.
It may slow down network performance due to increased monitoring.
It may eliminate the need for preventative mechanisms entirely.
, It may increase the number of false positives in security alerts.
7. In a scenario where a company implements SDN, how might this change their
approach to network security management?
The company can consolidate security functions onto fewer devices,
improving efficiency and response times.
The company will need to eliminate all existing security protocols.
The company must deploy more devices to handle security functions
separately.
The company will have less control over security due to increased
complexity.
8. Describe how Secure Boot contributes to the security of a Virtual Network
Function (VNF).
Secure Boot allows for dynamic scaling of network resources.
Secure Boot enhances data transmission speeds.
Secure Boot verifies the authenticity of the code before it is
executed, preventing unauthorized modifications.
Secure Boot manages the lifecycle of virtual machines.
9. What is the term used to describe the strategy that enhances SDN security by
using multiple controllers?
Logging
Controller consolidation
Virtualization
Controller diversity
, 10. Describe how proactive and reactive security recovery mechanisms
contribute to the overall security framework in SDN.
They limit the number of controllers managing switches.
They create static associations between controllers and devices.
They focus solely on reactive measures without proactive strategies.
They ensure that services remain available and recover quickly
from security incidents.
11. In a scenario where a network application is experiencing cross-site scripting
attacks, which plane should be analyzed for potential security flaws?
Management
Control
Application
Data
12. In a scenario where a company is experiencing network congestion, which
network virtualization benefit could be leveraged to improve the situation?
Debugging and intrusion detection
Mobility
Testing/quality assurance
Resource optimization
13. What does VLAN stand for in networking?
Virtual Layer Area Network
Virtual Long Area Network
