20+ practice questions focused on Network Configuration Concepts — one of the most tested topics on the CompTIA A+ Core 1 220-1201 exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start Network Configuration Concepts PracticeA small office has a single router with four LAN ports. The network uses the 192.168.1.0/24 subnet, and the router's LAN IP is 192.168.1.1. A technician needs to add a new printer that must have a static IP address outside the DHCP range (192.168.1.100-192.168.1.200) but still be reachable by all devices. Which IP address should the technician assign to the printer?
Explanation: A static IP must be within the same subnet as the network but outside the DHCP pool to avoid conflicts. The subnet is 192.168.1.0/24, so valid addresses range from 192.168.1.1 to 192.168.1.254, with the router at .1 and DHCP pool from .100 to .200. Addresses like .50 are outside the pool and within the subnet.
A technician is configuring a new wireless router for a home office. The customer wants to ensure that guests can access the internet but cannot see other devices on the main network. Which feature should the technician enable on the router?
Explanation: A guest network creates a separate SSID and VLAN that isolates guest traffic from the main network, allowing internet access while preventing access to local devices. This is a common feature on modern routers for security and privacy.
A customer reports that their laptop connects to the office Wi-Fi but cannot access the internet. Other devices on the same network work fine. The technician checks the laptop's IP configuration and sees an IP address of 169.254.15.22. What is the most likely cause of this issue?
Explanation: An IP address starting with 169.254 indicates that the device was unable to obtain an IP address from a DHCP server, so it assigned itself an Automatic Private IP Addressing (APIPA) address. This typically means the DHCP server is unreachable or not responding, but since other devices work, the issue is likely with the laptop's DHCP request failing.
A network administrator is configuring a small business network with two subnets: 192.168.1.0/24 for employees and 192.168.2.0/24 for guests. The router has two LAN interfaces with IPs 192.168.1.1 and 192.168.2.1. A technician connects a new access point to the guest subnet switch and configures it with a static IP of 192.168.2.50. The access point can ping the router's guest interface but cannot reach the internet. The router's default route points to an ISP modem at 203.0.113.1. What is the most likely missing configuration?
Explanation: The access point can reach the router's guest interface, but not the internet. This suggests the router is not performing NAT for the guest subnet, or the router lacks a route back from the ISP modem. Typically, for internet access, the router must have NAT enabled for the guest subnet, and the ISP modem must have a route back to the guest subnet. Since the employee subnet works, the router likely has NAT for 192.168.1.0/24 but not for 192.168.2.0/24.
A technician is troubleshooting a connectivity issue where a user's computer can ping the default gateway but cannot access a web server at 203.0.113.50. The technician runs a tracert and sees that the first hop responds, but subsequent hops time out. What is the most likely cause?
Explanation: Tracert shows the path packets take to a destination. If the first hop (default gateway) responds but later hops time out, it suggests a routing issue beyond the local network, such as a misconfigured router or a firewall blocking ICMP. The fact that the gateway is reachable rules out local connectivity problems.
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Practice all Network Configuration Concepts questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of Network Configuration Concepts. This tells you whether you need a concept refresher or just practice.
2. Review every explanation
For each question — right or wrong — read the full explanation. Understanding why an answer is correct is more valuable than knowing the answer itself.
3. Focus on exam traps
Network Configuration Concepts questions on the 220-1201 frequently use trap wording. Look for subtle differences in answers that test your precision, not just general knowledge.
4. Reach 80% consistently
Do repeated sessions until you score 80%+ three times in a row. Then move to mixed-mode practice to test cross-topic recall under realistic conditions.
The exact number varies per candidate. Network Configuration Concepts is tested as part of the CompTIA A+ Core 1 220-1201 blueprint. Practicing with targeted Network Configuration Concepts questions ensures you can handle any format or difficulty that appears.
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Difficulty is subjective, but Network Configuration Concepts is a high-priority exam concept tested in multiple ways — direct recall, scenario analysis, and command-output interpretation. Consistent practice is the best way to build confidence.
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