Free CompTIA Network+ (N10-009) Practice Questions

Sample N10-009 Practice Questions

Browse all 16 free CompTIA Network+ practice questions below.

1. A network administrator is designing a network topology for a new office location. The design must ensure that if one cable fails, the entire network does not go down, and all devices should have redundant paths to communicate. Which network topology BEST meets these requirements?

   • Bus topology
   • Ring topology
   • Star topology
   • Mesh topology

2. Which layer of the OSI model is responsible for establishing, maintaining, and terminating communication sessions between applications?

   • Layer 6 - Presentation
   • Layer 7 - Application
   • Layer 5 - Session
   • Layer 4 - Transport

3. A company wants to deploy cloud services where they maintain control over the operating system and applications but do not manage the underlying hardware infrastructure. Which cloud service model should they choose?

   • Platform as a Service (PaaS)
   • Desktop as a Service (DaaS)
   • Infrastructure as a Service (IaaS)
   • Software as a Service (SaaS)

4. What is the primary purpose of the DHCP protocol in a network?

   • To translate private IP addresses to public IP addresses
   • To resolve domain names to IP addresses
   • To automatically assign IP addresses to devices on a network
   • To synchronize time across network devices

5. A network technician needs to subnet the 192.168.1.0/24 network to create 6 subnets with the maximum number of hosts per subnet. Which subnet mask should be used?

   • 255.255.255.224 (/27)
   • 255.255.255.224 (/27)
   • 255.255.255.192 (/26)
   • 255.255.255.240 (/28)

6. A company is implementing a new SD-WAN solution to connect multiple branch offices to their headquarters. The network engineer needs to ensure that critical business applications receive priority over less important traffic. Which SD-WAN feature should be configured to meet this requirement?

   • Link aggregation
   • Quality of Service (QoS)
   • Multipath routing
   • Load balancing

7. An administrator is configuring VLANs on a network switch and needs to allow traffic from multiple VLANs to traverse a single physical link between switches. Which technology should be implemented?

   • Trunk port using 802.1Q
   • Access port
   • Port security
   • Port mirroring

8. A network operations team needs to implement automated network configuration management using Infrastructure as Code (IaC). Which of the following tools would be MOST appropriate for this task?

   • NetFlow
   • Terraform or Ansible
   • Nmap
   • Wireshark

9. A security analyst discovers that an attacker has gained unauthorized access to the internal network by connecting a rogue access point. Which security measure would have BEST prevented this attack?

   • Configuring MAC address filtering
   • Enabling 802.1X port-based network access control
   • Using a VPN concentrator
   • Implementing WPA3 encryption

10. A user reports inability to access the company website. The technician runs 'ping www.company.com' and receives 'Unknown host' error. However, 'ping 192.168.1.10' (the web server's IP) works successfully. What is the MOST likely cause?

    • The firewall is blocking port 80
    • The web server is offline
    • The default gateway is misconfigured
    • DNS resolution is failing

11. A company is implementing a zero-trust security architecture for their network. Which of the following principles is MOST critical to this implementation?

    • Use WPA3 encryption for all wireless networks
    • Never trust, always verify every access request
    • Deploy a next-generation firewall at the perimeter
    • Implement network segmentation using VLANs

12. An administrator is configuring a new SD-WAN solution for a company with 15 geographically distributed branch offices. Which of the following are primary benefits of SD-WAN over traditional WAN technologies? (Select TWO)

    • Automatic elimination of all network latency
    • Dynamic path selection based on application performance
    • Elimination of all MPLS circuits
    • Centralized management and orchestration
    • Guaranteed bandwidth for all applications

13. A network engineer is troubleshooting connectivity issues in a hybrid cloud environment. Users report intermittent access to cloud-based applications. Which tool should the engineer use FIRST to identify where packet loss is occurring?

    • traceroute
    • netstat
    • arp
    • nslookup

14. A datacenter is implementing VxLAN for network virtualization across multiple physical hosts. What is the primary purpose of VxLAN in large-scale deployments?

    • To eliminate the need for routing protocols
    • To overcome the 4096 VLAN ID limitation
    • To provide Layer 1 encryption
    • To reduce the number of physical switches required

15. An organization wants to automate network device provisioning using Infrastructure as Code (IaC). Which of the following tools would be MOST appropriate for this task?

    • Nmap
    • Syslog
    • Wireshark
    • Ansible

16. A network administrator needs to segment traffic between the HR, Finance, and Engineering departments on the same physical switch. Which technology should be implemented to accomplish this?

    • DHCP
    • NAT
    • VPN
    • VLAN