WGU D415 Pre- Assessment (Latest Update) Software Defined Networking Review| 100% Verified Questions & Answers | Grade A

WGU D415 Pre- Assessment (Latest Update) Software Defined Networking Review| 100% Verified Questions & Answers | Grade A 2026/2027 | GRADED A+ | 100 out of 100 Question: Which task can be performed by an administrator using a network's automation software? Answer Configuring multiple wireless access points 3 multiple choice options Question: Which network configuration automation tool is written using C++, Clojure, and Ruby? Answer Puppet 3 multiple choice options Question: How does software-defined networking (SDN) affect information security? Answer A single device can be configured for switching, routing, load balancing, or security monitoring. 3 multiple choice options Question: Which model involves moving services like load balancing, firewalls, and intrusion prevention systems away from dedicated hardware into a non-physical environment? Answer Network functions virtualization (NFV) 3 multiple choice options Question: 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? Answer Virtual firewalls should be deployed for traffic flow control instead of physical firewalls. 3 multiple choice options Question: 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? Answer The firewall should be integrated with a virtualization management platform. 3 multiple choice options Question: A network uses event logging for auditing purposes. How should the audit records be managed according to the recommendations in NIST 800-53? Answer Generate time stamps for audit records. 3 multiple choice options Question: How has network functions virtualization (NFV) changed network functions? Answer It has moved network functions from stand-alone appliances to software running on any server. 3 multiple choice options Question: Which networking task would benefit from the use of network automation tools? Answer Configuring multiple wireless access points 3 multiple choice options Question: Which task can be performed by an administrator using a network's automation software? Answer Add a firewall to the network. 3 multiple choice options Question: Which financial benefit does network functions virtualization (NFV) offer to carriers? Answer The opportunity for pay-as-you-go services without a large up-front investment 3 multiple choice options Question: What are the software applications within a network functions virtualization (NFV) architecture that perform specific network tasks? Answer Virtual network functions (VNFs) 3 multiple choice options Question: How are network functions virtualization (NFV) and software-defined networks (SDNs) related? Answer They are two network infrastructure improvement models that are mutually beneficial and often used together. 3 multiple choice options Question: Which concept is used to create differentiated access based on entitlement to administer a network device or controller? Answer Role-based access control (RBAC) 3 multiple choice options Question: What are the advantages of using centralized network infrastructure? Answer It helps in the easy deployment and management of systems and devices within the network infrastructure. 3 multiple choice options Question: What is a direct benefit of using network programmability instead of manual configuration when implementing configuration changes? Answer Reduced user error due to manual configuration 3 multiple choice options Question: Which module of OpenStack should be used to improve efficiency and scalability of user storage and unstructured data? Answer Swift 3 multiple choice options Question: Which module of OpenStack should a developer use for the management of various virtual machine images? Answer Glance 3 multiple choice options Question: Which OpenStack module should a developer use as a dashboard for network resource management? Answer Horizon 3 multiple choice options Question: Which OpenStack module should be used to improve the storage and management of secure authentication information? Answer Barbican 3 multiple choice options Question: How does a software-defined networking (SDN) southbound API function? Answer It allows the controller to communicate with the OpenFlow switch and network routers. 3 multiple choice options Question: Which layers are connected by the northbound API? Answer The application and control layers 3 multiple choice options Question: What includes interoperable modules used to orchestrate large pools of computing, storage, and networking resources? Answer OpenStack 3 multiple choice options Question: How do virtual overlay networks function in relation to existing network structures? Answer Provision and manage networks alongside other virtual resources 3 multiple choice options 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. Answer Which layer does the attack face next? Detection and response mechanisms 3 multiple choice options Which technique can a network administrator use to identify potential weaknesses that would be accessible to a trusted network user? Answer Authenticated vulnerability scan 3 multiple choice options Which tool can a developer use to ensure that the code loaded in the VNF execution environment is authentic? Answer Secure Boot 3 multiple choice options Which method improves network partitioning to reduce threat effectiveness? Answer Physical segregation of hardware 3 multiple choice options Which function does an intrusion prevention system (IPS) perform in a network? Answer It scans for patterns that could be a threat and takes the configured action against them. 3 multiple choice options How are security threats that happen within a computer network classified? Answer As intentional and unintentional 3 multiple choice options Why does an intrusion detection system (IDS) use a TAP or SPAN port to analyze a copy of the inline traffic stream? Answer To ensure that inline network performance is not impacted 3 multiple choice options What is a function of the bastion host in a screened subnet firewall architecture? Answer To serve as the main point of contact for incoming connections 3 multiple choice options Which problem do traditional firewalls fail to protect against? Answer Internal attacks 3 multiple choice options Which approach improves the strength of software-defined networking (SDN) security and intrusion tolerance? Answer Controller diversity 3 multiple choice options Which design component is incorporated in the software-defined networking (SDN) framework security? Answer Proactive and reactive security recovery mechanisms maintain optimal service availability. 3 multiple choice options What does clustering defend against? Answer Single point of failure in a controller 3 multiple choice options Which tool gives insights into occurred events for analyzing and troubleshooting a network or computer system? Answer Logs 3 multiple choice options 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? Answer Redundancy 3 multiple choice options What is the purpose of the Common Vulnerability Scoring System (CVSS)? Answer CVSS is an open-source framework for identifying and defining software vulnerabilities. 3 multiple choice options What are two key features of software-defined security? Answer Enabling policy-driven and automated security orchestration and management & Removing the time- and error-prone human middleware via greater automation 3 multiple choice options 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? Answer Proactive security 3 multiple choice options What is an open-source security metric framework that quantifies a network's attack surface? Answer Common Vulnerability Scoring System 3 multiple choice options What is an advantage of Simple Network Monitoring Protocol (SNMP) over NetFlow? SNMP has real-time management functionality. 3 multiple choice options Which network security component restricts access between a protected network and the internet? Firewall 3 multiple choice options Which tool has the functionality to reset a network connection automatically in response to analyzed incoming network traffic flows? Intrusion prevention system (IPS) 3 multiple choice options Which two interdependent services should be established when providing a centralized logging service for a data center networking environment? Collect logs & Transport logs 3 multiple choice options A help desk technician receives a ticket stating that the client can connect to the corporate wireless network, yet no traffic is passed. Shortly after that, the technician receives five more tickets indicating the same issue. When they look at the tickets, several show the output "IP address: 169.254.1.200" from a Windows laptop that is hardwired into the network. Which service will be affected by this issue? Dynamic host configuration protocol (DHCP) 3 multiple choice options A remote worker is doing a test video call on the same network used by their family. During the test, they are told their voice is choppy and their video is pixelated. Which common network issue are they experiencing? An issue with the quality of service (QOS) 3 multiple choice options Which kind of device is needed for communication to happen between two local area networks? Router 3 multiple choice options A technician receives a ticket stating that a host computer is not connecting to the network. While troubleshooting, they see that the Windows 10 computer has an IP address of 169.254.10.12. Which Windows command should the technician use to force the host to get a new IP address? ipconfig /release && ipconfig /renew 3 multiple choice options 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? A link going from the "up up" state into the "up down" state 3 multiple choice options Which command from a Windows virtual machine command prompt displays the full transmission control protocol (TCP) configuration for every available adapter? ipconfig /all 3 multiple choice options Which network function commonly blocks the connectivity between a controller and a southbound interface? Firewall 3 multiple choice options Which function of a device is needed to have accurate data for time-sensitive network event correlation? An Institute of Electrical and Electronics Engineers (IEEE) 1588 synchronized clock 3 multiple choice options Which phase of the system design life cycle (SDLC) includes security categorization and preliminary risk assessment? Initiation 3 multiple choice options Which risk analysis methodologies are used in information security? Quantitative and qualitative 3 multiple choice options What is an asset as defined in information security? Anything of value to an organization 3 multiple choice options Which action impacts the quality of service or security of a network function virtualization (NFV) tenant? Workload migrations that happen on the same NFV deployment 3 multiple choice options Which potential attack target would result in a vulnerability that allows attackers to obtain cryptographic keys from other virtual network functions (VNFs)? VNF manager 3 multiple choice options What is a key concept in host routing? A single gateway exiting a location is preferred for a specific type of traffic.