WGU - Software Defined Networking - D415 2026-
2027 Exam Complete 150 Questions and Correct
Detailed Answers (Verified Answers) Already Graded
A+ Brand New Version!!
A network administrator designed a three-layer security system for the network. An attack on the
system has exploited a hole in the first layer of the security system. Which layer does the attack
face next?
Detection and response mechanisms
Preventative mechanisms
Recovery mechanisms
Encapsulation and encryption mechanisms - CORRECT ANSWER: Detection and response
mechanisms
A network administrator finds an ongoing attack against a virtual machine (VM) and then swaps
computing architectures for that VM. Which moving target defense (MTD) technique did this
administrator utilize?
Redundancy
Diversification
Obfuscation
Shuffling - CORRECT ANSWER: Shuffling
A network administrator uses a telemetry system to monitor and troubleshoot a network. The
system uses event-based telemetry to perform these functions.Which information would be
exposed by this type of system?
An employee logging into a switch and using commands to show the output of the configuration
,A link going from the "up up" state into the "up down" state
A device connected to the wireless network transmitting data with malicious code - CORRECT
ANSWER: A link going from the "up up" state into the "up down" state
A network uses event logging for auditing purposes. How should the audit records be managed
according to the recommendations in NIST 800-53?
Generate time stamps for audit records.
Store audit records for a period of 36 months.
Use a designated local device for audit record storage.
Manually inspect audit records at specified intervals. - CORRECT ANSWER: Generate time
stamps for audit records.
A network utilizes virtualized environments with virtual machines running delay-sensitive
applications. Which recommendation should be used to protect the virtual workload in
accordance with NIST 800-125B?
Virtual firewalls should be deployed for traffic flow control instead of physical firewalls.
Two identical bastion hosts should be used instead of one primary host.
The logical network topology should be either a star topology or a bus topology. - CORRECT
ANSWER: Virtual firewalls should be deployed for traffic flow control instead of physical
firewalls.
A virtualized network uses a subnet-level virtual firewall. Which recommendation should be
used to protect the virtual workload in accordance with NIST 800-125B?
The firewall should be integrated with a virtualization management platform.
The firewall should be accessible only through a standalone console.
The firewall should be located at the center of the network topology.
,The firewall should be reconfigured and optimized on a daily basis. - CORRECT ANSWER: The
firewall should be integrated with a virtualization management platform.
How are network functions virtualization (NFV) and software-defined networks (SDNs) related?
They are two network infrastructure improvement models that are mutually beneficial and often
used together.
They are both designed to improve network infrastructure but on different sides of the provider-
client relationship.
They each improve networking, where SDN addresses only software and NFV addresses only
hardware. - CORRECT ANSWER: They are two network infrastructure improvement models
that are mutually beneficial and often used together.
How are security threats that happen within a computer network classified?
As detectable and unknown
As malicious and robust
As divisive and destructive
As intentional and unintentional - CORRECT ANSWER: As intentional and unintentional
How do virtual overlay networks function in relation to existing network structures?
Provision and manage networks alongside other virtual resources
Link physical computers through secured wired connections
Establish a well-defined trusted domain barrier without multiple firewalls
Interchange protocols among the application, transport, and network layers - CORRECT
ANSWER: Provision and manage networks alongside other virtual resources
How does a software-defined networking (SDN) southbound API function?
, It allows the controller to communicate with the OpenFlow switch and network routers.
It allows the controller to interchange elements among application, control, and infrastructure
layers.
It allows the controller to make a direct connection between applications and the operating
system.
It allows the controller to manage elements of the application layer through the controllers. -
CORRECT ANSWER: It allows the controller to communicate with the OpenFlow switch and
network routers.
How does software-defined networking (SDN) affect information security?
A single device can be configured for switching, routing, load balancing, or security monitoring.
Each network function is handled by a separate, isolated device.
With the complexity of software, carriers have little visibility into security issues.
Network information is now centralized on one physical device. - CORRECT ANSWER: A
single device can be configured for switching, routing, load balancing, or security monitoring.
How has network functions virtualization (NFV) changed network functions?
It has moved network functions from stand-alone appliances to software running on any server.
It has moved network functions from software running on any server to stand-alone appliances.
It has moved network functions from the network presentation layer to the transport layer.
It has moved network functions from the network transport layer to the presentation layer. -
CORRECT ANSWER: It has moved network functions from stand-alone appliances to software
running on any server.
Instead of defending a network infrastructure by detecting, preventing, tracking, and remediating
threats, a new model changes the attack surface over time. What is the new model referred to as?
2027 Exam Complete 150 Questions and Correct
Detailed Answers (Verified Answers) Already Graded
A+ Brand New Version!!
A network administrator designed a three-layer security system for the network. An attack on the
system has exploited a hole in the first layer of the security system. Which layer does the attack
face next?
Detection and response mechanisms
Preventative mechanisms
Recovery mechanisms
Encapsulation and encryption mechanisms - CORRECT ANSWER: Detection and response
mechanisms
A network administrator finds an ongoing attack against a virtual machine (VM) and then swaps
computing architectures for that VM. Which moving target defense (MTD) technique did this
administrator utilize?
Redundancy
Diversification
Obfuscation
Shuffling - CORRECT ANSWER: Shuffling
A network administrator uses a telemetry system to monitor and troubleshoot a network. The
system uses event-based telemetry to perform these functions.Which information would be
exposed by this type of system?
An employee logging into a switch and using commands to show the output of the configuration
,A link going from the "up up" state into the "up down" state
A device connected to the wireless network transmitting data with malicious code - CORRECT
ANSWER: A link going from the "up up" state into the "up down" state
A network uses event logging for auditing purposes. How should the audit records be managed
according to the recommendations in NIST 800-53?
Generate time stamps for audit records.
Store audit records for a period of 36 months.
Use a designated local device for audit record storage.
Manually inspect audit records at specified intervals. - CORRECT ANSWER: Generate time
stamps for audit records.
A network utilizes virtualized environments with virtual machines running delay-sensitive
applications. Which recommendation should be used to protect the virtual workload in
accordance with NIST 800-125B?
Virtual firewalls should be deployed for traffic flow control instead of physical firewalls.
Two identical bastion hosts should be used instead of one primary host.
The logical network topology should be either a star topology or a bus topology. - CORRECT
ANSWER: Virtual firewalls should be deployed for traffic flow control instead of physical
firewalls.
A virtualized network uses a subnet-level virtual firewall. Which recommendation should be
used to protect the virtual workload in accordance with NIST 800-125B?
The firewall should be integrated with a virtualization management platform.
The firewall should be accessible only through a standalone console.
The firewall should be located at the center of the network topology.
,The firewall should be reconfigured and optimized on a daily basis. - CORRECT ANSWER: The
firewall should be integrated with a virtualization management platform.
How are network functions virtualization (NFV) and software-defined networks (SDNs) related?
They are two network infrastructure improvement models that are mutually beneficial and often
used together.
They are both designed to improve network infrastructure but on different sides of the provider-
client relationship.
They each improve networking, where SDN addresses only software and NFV addresses only
hardware. - CORRECT ANSWER: They are two network infrastructure improvement models
that are mutually beneficial and often used together.
How are security threats that happen within a computer network classified?
As detectable and unknown
As malicious and robust
As divisive and destructive
As intentional and unintentional - CORRECT ANSWER: As intentional and unintentional
How do virtual overlay networks function in relation to existing network structures?
Provision and manage networks alongside other virtual resources
Link physical computers through secured wired connections
Establish a well-defined trusted domain barrier without multiple firewalls
Interchange protocols among the application, transport, and network layers - CORRECT
ANSWER: Provision and manage networks alongside other virtual resources
How does a software-defined networking (SDN) southbound API function?
, It allows the controller to communicate with the OpenFlow switch and network routers.
It allows the controller to interchange elements among application, control, and infrastructure
layers.
It allows the controller to make a direct connection between applications and the operating
system.
It allows the controller to manage elements of the application layer through the controllers. -
CORRECT ANSWER: It allows the controller to communicate with the OpenFlow switch and
network routers.
How does software-defined networking (SDN) affect information security?
A single device can be configured for switching, routing, load balancing, or security monitoring.
Each network function is handled by a separate, isolated device.
With the complexity of software, carriers have little visibility into security issues.
Network information is now centralized on one physical device. - CORRECT ANSWER: A
single device can be configured for switching, routing, load balancing, or security monitoring.
How has network functions virtualization (NFV) changed network functions?
It has moved network functions from stand-alone appliances to software running on any server.
It has moved network functions from software running on any server to stand-alone appliances.
It has moved network functions from the network presentation layer to the transport layer.
It has moved network functions from the network transport layer to the presentation layer. -
CORRECT ANSWER: It has moved network functions from stand-alone appliances to software
running on any server.
Instead of defending a network infrastructure by detecting, preventing, tracking, and remediating
threats, a new model changes the attack surface over time. What is the new model referred to as?
