WGU D325: Networks
D325 is WGU's CompTIA Network+ course — the certification exam is the course assessment. It goes well past D315's foundations into subnetting, routing and switching, network services, troubleshooting, and network security at Network+ depth.
Fennie is independent and not affiliated with Western Governors University. This is an unofficial study guide.
Build my D325 study planWhat makes it hard
It's one of the BSIT's heavier lifts: subnetting must be fast and accurate, the port-and-protocol recall doubles down on what D315 started, and the exam includes performance-based questions. WGU's voucher gate requires very high practice-assessment scores, which is frustrating but predicts the real exam honestly.
What you'll cover
- • OSI model and protocols at depth
- • IP addressing and subnetting
- • Routing and switching
- • Network services and cloud networking
- • Troubleshooting methodology
- • Network hardening and security
The D325 study guide
How to study for WGU D325, step by step.
- 1
Take a practice exam to see the real bar
Network+ is an external cert with performance-based questions, and your practice score sets the plan. Most students find subnetting and troubleshooting are the gaps.
- 2
Make subnetting a daily reps habit
Practice subnet math every day until a /26 or /28 answer is automatic. Exam timing punishes anyone still counting on their fingers, and PBQs assume fluency.
- 3
Extend the D315 memorization, don't restart it
Ports, protocols, and layers return at greater depth. Refresh your existing sheet and add the Network+-level detail — routing protocols, services, and WAN technologies.
- 4
Work troubleshooting scenarios in order
The methodology questions ask what you'd do next, not what's wrong. Drill the troubleshooting sequence against practice scenarios until the order is reflexive.
- 5
Beat the practice gate, then book the exam
WGU requires a high score on an approved practice assessment before releasing the voucher. Clear it with margin and schedule the Network+ exam within days.
- 6
Let Fennie pace the climb
Upload the D325 objectives to Fennie and Daily Plans spreads subnetting reps, protocol review, and scenario practice across a schedule paced to your exam date, with quizzes from the actual domains. Free to start.
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How Fennie helps with D325
Daily Plans turn D325 into the daily-reps course it needs to be — subnetting practice, protocol flashcards, and scenario quizzes paced to your Network+ exam date. Chat walks through subnet math step by step when an answer won't reconcile.
FAQ
Is WGU D325 hard?
Yes — it's commonly rated among the harder BSIT courses. Subnetting fluency and the sheer port-and-protocol volume are the two hurdles, and the assessment is the actual Network+ exam.
Does D325 earn the Network+ certification?
Yes — the course assessment is the CompTIA Network+ exam, so passing the course means you hold the industry cert.
How long does D325 take?
Plan on 6–10 weeks without networking experience. Daily subnetting practice and spaced protocol review shorten it more than anything else.
Pass D325 with a plan, not a cram
Upload your D325 materials and Fennie generates a Daily Plan paced to your deadline — plus chat, flashcards, and quizzes built from the actual course content.
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