Diagnose network faults by layer: verify physical link, then IP configuration, then name resolution, then ports and services. The single most important skill is reading a scenario and choosing the correct command or setting, especially distinguishing DNS, DHCP, and wireless security problems.
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Domain overview
Domain 2 (Networking) covers 23% of Core 1 220-1201: OSI and TCP/IP models, ports and protocols, IP addressing and subnetting, wireless standards and security, network types and hardware, plus CLI tools like ipconfig, ping, tracert, nslookup, netstat, and network troubleshooting methodology. Questions are scenario-based, asking you to diagnose connectivity failures or pick the correct configuration.
Exam objectives
TCP/IP ports and protocols such as DNS 53, DHCP 67/68, HTTP 80, HTTPS 443, SSH 22, RDP 3389
IPv4/IPv6 addressing, subnetting, private ranges, APIPA, and default gateway configuration
Wireless standards, channels, bands, and security: WPA2/WPA3, AES, pre-shared key versus enterprise
Command-line tools: ipconfig, ping, tracert, nslookup, netstat, and troubleshooting methodology
Confusing DNS failure with DHCP failure: name resolution fails but direct IP access works, so test with nslookup or ping by name.
Assuming a link light means working connectivity; a dead link light points to cable, NIC, or switch port, not software.
Mixing up WPA2-Personal (pre-shared key) with WPA2-Enterprise (RADIUS authentication) when a client wants easy employee access.
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A technician is configuring a small office wireless router for a client. The client wants the network to be as secure as possible while still allowing employees to connect easily with a pre-shared key. The router supports WPA2, WPA3, WPA, and WEP. Which security protocol should the technician select?
2A user reports that they cannot access any websites by typing domain names, but they can access websites by entering IP addresses directly. The technician suspects a DNS issue. Which command should the technician use first to verify the DNS server settings on the user's Windows 10 computer?
3A small business wants to add a guest wireless network that allows visitors to access the internet but prevents them from reaching internal company resources. The existing network uses a single wireless router with a default configuration. Which of the following should a technician implement?
4A user reports that their workstation cannot connect to any network resources. The technician notices the network cable is plugged into the wall jack and the NIC, but the link light is off. Which of the following should the technician check FIRST?
5A company has a network with multiple VLANs. Users on VLAN 10 need to access a server on VLAN 20, but they cannot. The technician verifies that the switch ports are correctly assigned and the server is reachable from other VLANs. Which of the following is the MOST likely cause?
6A technician is configuring a wireless access point for a small office. The office needs to support both older laptops that only support 2.4 GHz and newer devices that support 5 GHz. The technician wants to ensure optimal performance and compatibility. Which two of the following should the technician configure? (Choose two.)
7A technician is troubleshooting a workstation that can access local network resources but cannot reach any websites on the internet. The technician runs ipconfig and sees the IP address, subnet mask, and default gateway are correct. Which of the following should the technician check NEXT?
Diagnose network faults by layer: verify physical link, then IP configuration, then name resolution, then ports and services. The single most important skill is reading a scenario and choosing the correct command or setting, especially distinguishing DNS, DHCP, and wireless security problems.
The Courseiva 220-1201 question bank contains 7 questions in the Networking domain, covering the 23% of the exam attributed to this domain in the official CompTIA blueprint. Click any question to see the full explanation and answer breakdown.
Start with a 10-question focused session to identify your baseline accuracy in this domain. Read every explanation — even for questions you answer correctly — to understand the reasoning. Once you score consistently above 80%, move to a 20–30 question session to confirm depth before moving to the next domain.
Yes — the session launcher on this page draws questions exclusively from the Networking domain. Choose 10, 20, 30, or 50 questions for a focused session, or click individual questions to review them one by one.
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