Question 1mediummultiple choice
Full question →N10-009 · topic practice
Network Fundamentals practice questions
Use this page to practise N10-009 Network Fundamentals practice questions. The goal is not to memorise dumps, but to understand the concept, review the explanation and improve your exam readiness.
What the exam tests
What to know about Network Fundamentals
Network Fundamentals questions test whether you can apply the concept in context, not just recognise a definition.
How the topic appears in realistic exam-style scenarios.
Which detail in the question changes the correct answer.
How to eliminate plausible but wrong options.
How to connect the question back to the wider exam objective.
Practice set
Network Fundamentals questions
20 questions · select your answer, then reveal the explanation
Question 2mediummultiple choice
Full question →A network engineer is designing a new switched network and needs to ensure that broadcast traffic from one department does not reach another department's workstations. The engineer plans to use VLANs. Which of the following must be configured on the switches to isolate broadcast domains as intended?
Question 3hardmultiple choice
Full question →A security engineer is configuring a site-to-site VPN between two branch offices. The requirement is to encrypt all traffic between the two networks using IPsec. Which IPsec mode should be used to encrypt the entire IP packet including the original header?
Question 4mediummultiple choice
Full question →A network administrator is connecting two switches to increase bandwidth and provide redundancy. Which technology should be used to combine multiple physical links into a single logical link?
Question 5mediummultiple choice
Full question →A network administrator is experiencing issues where unauthorized devices are offering IP addresses to clients, causing connectivity problems. Which security feature should be enabled on switches to prevent this?
Question 6easymultiple choice
Full question →A network administrator is troubleshooting a connectivity issue and suspects the problem is related to the physical cabling. At which layer of the OSI model should the administrator begin their investigation?
Question 7easymultiple choice
Full question →A network administrator needs to generate a report of all MAC addresses learned on each switch port to assist with inventory management. Which command-line utility can be used to view the MAC address table on a switch?
Question 8mediummultiple choice
Full question →A network engineer is designing a network for a large organization. The engineer needs to ensure that broadcast traffic from one VLAN does not propagate to other VLANs while still allowing inter-VLAN communication. Which of the following devices is required to route between VLANs?
Question 9mediummultiple choice
Full question →A network administrator needs to identify which application protocols are consuming the most bandwidth on the company WAN link. Which of the following tools should the administrator use?
Question 10mediummultiple choice
Full question →A network administrator needs to identify which devices are generating the most traffic on a WAN link. The administrator requires detailed flow data including source and destination IP addresses, ports, and protocols. Which technology should be deployed?
Question 11mediummultiple choice
Full question →A network engineer is configuring a Link Aggregation Group (LAG) between two switches. Switch A is set to LACP active mode. Which mode should be configured on Switch B to form the LAG?
Question 12mediummultiple choice
Full question →A network administrator needs to replace a core switch that is nearing end-of-life. According to change management best practices, which step should the administrator perform FIRST?
Question 13mediummultiple choice
Full question →A network engineer is implementing OSPF on a router. All directly connected neighbors are listed with state FULL, but routes from another area are not appearing in the routing table. Which of the following is the most likely cause?
Question 14mediummultiple choice
Full question →A network administrator needs to schedule a firmware update for several switches during a maintenance window. Which of the following documents should be updated immediately after the changes are complete?
Question 15easymultiple choice
Full question →A network administrator needs to schedule a firmware upgrade for a critical router. Which document should be used to formally communicate the change, seek approval, and track the implementation?
Question 16easymultiple choice
Full question →A network administrator needs to schedule a firmware upgrade for a critical switch during a maintenance window. After the upgrade is completed and verified, which document should the administrator update to reflect the new firmware version?
Question 17hardmultiple choice
Full question →A network engineer has successfully established an IPsec site-to-site VPN tunnel between a branch office (10.0.1.0/24) and the main office (192.168.1.0/24). The tunnel status shows as active, and both sides can ping each other's tunnel interface IP addresses. However, users at the branch office cannot ping the main office server at 192.168.1.10, and the main office cannot ping the branch office server at 10.0.1.10. The firewall rules on both sides permit IPsec traffic and all internal traffic. What should the engineer check NEXT?
Question 18mediummultiple choice
Full question →A user reports slow network performance on their workstation. The technician checks the switch port and sees a high number of CRC errors. Which of the following is the MOST likely cause of this issue?
Question 19easymultiple choice
Full question →Which of the following network protocols operates at the Transport layer of the OSI model and provides connection-oriented, reliable data delivery?
Question 20easymultiple choice
Full question →A network administrator needs to update the firmware on a critical core switch. According to change management best practices, which step should be completed FIRST?
Watch out for
Common Network Fundamentals exam traps
- ▸Answering from memory before reading the full scenario.
- ▸Missing a constraint such as cost, availability, security, scope or command context.
- ▸Choosing a broad answer when the question asks for the most specific fix.
- ▸Ignoring why the wrong options are tempting.
Free account
Track your progress over time
Create a free account to save your results and see which topics improve across sessions.
Focused Network Fundamentals sessions
Start a Network Fundamentals only practice session
Every question in these sessions is drawn from the Network Fundamentals domain — nothing else.
Related practice questions
Related N10-009 topic practice pages
Move into related areas when this topic feels solid.
Network+ network fundamentals practice questions
Practise N10-009 questions linked to Network+ network fundamentals.
Network+ implementation practice questions
Practise N10-009 questions linked to Network+ implementation.
Network+ operations practice questions
Practise N10-009 questions linked to Network+ operations.
Network+ security practice questions
Practise N10-009 questions linked to Network+ security.
Network+ troubleshooting practice questions
Practise N10-009 questions linked to Network+ troubleshooting.
Frequently asked questions
- What does the N10-009 exam test about Network Fundamentals?
- Network Fundamentals questions test whether you can apply the concept in context, not just recognise a definition.
- How should I use these practice questions?
- Select your answer before revealing the explanation. Then read why each option is right or wrong — this active recall approach builds retention far faster than re-reading notes.
- Can I practise just Network Fundamentals questions in a focused session?
- Yes — the session launcher on this page draws every question from the Network Fundamentals domain. Use a 10-question session first to gauge your baseline, then move to 20 or 30 once the weak spots are clear.
- Where can I practise other N10-009 topics?
- Use the topic links above to move to related areas, or go back to the N10-009 question bank to see all topics.
- Are these real exam questions or dumps?
- These are original practice questions written to test the same concepts the N10-009 exam covers. They are not copied from any real exam or dump site.
Track your progress
A free account saves results across sessions and highlights which topics need work.
Sign up freeStudy resources
Exam traps to avoid
- ▸Answering from memory before reading the full scenario.
- ▸Missing a constraint such as cost, availability, security, scope or command context.
- ▸Choosing a broad answer when the question asks for the most specific fix.
- ▸Ignoring why the wrong options are tempting.