504 original practice questions for the N10-009, based on the latest exam objectives — OSI layers, port numbers, routing, troubleshooting flows — and scheduled so the facts stay fresh instead of fading between study sessions. The exam is 90 minutes with performance-based questions in the mix.
Plus 100 more free in the iPhone app (iOS 26 or later)
| 1.0 Networking Concepts | 23% |
| 2.0 Network Implementation | 20% |
| 3.0 Network Operations | 19% |
| 4.0 Network Security | 14% |
| 5.0 Network Troubleshooting | 24% |
90 minutes · CompTIA scores 100–900, pass = 720. Ascert's exam simulation draws questions in these same proportions.
A switch receives a frame and forwards it out a single port based on the destination hardware address. At which OSI layer is the switch making this decision?
✗ A hub lives at Layer 1 — it just repeats bits out every port. A switch is smarter than that.
✓ Right. Switches forward frames using MAC addresses, which are data link addresses.
✗ Layer 3 devices (routers) forward on IP addresses, not hardware addresses.
✗ The session layer manages dialogs between applications, not frame forwarding.
Domain 1.0 Networking Concepts. One of 504 Network+ questions.
504, each written to the current blueprint with a real explanation. The free tier includes 100 of them, spread across every domain, so you can judge the quality before paying anything.
No, and be wary of anyone who says otherwise. The real exam includes performance-based questions no app simulates. Ascert keeps the knowledge sharp; your course and labs build the skill.
Free to try, then $9.99 once, or $24.99 for every cert. No subscription, no account, no ads.
Coming to the App Store · iPhone, iOS 26 or later