Objective 2.020% of exam

Networking

220-1101 Practice Questions

Networking is 20% of CompTIA A+ Core 1 220-1101, covering TCP/IP ports and protocols, IP addressing and subnetting, wireless and wired standards, network services, and troubleshooting tools. The exam tests this through scenario questions asking you to identify a port, choose a cable or wireless standard, configure a client, or diagnose connectivity with the right command.

Full Practice Test →All Objectives

What this objective tests

220-1101 Networking — Key Topics

Candidates must map TCP/UDP ports, configure IPv4/IPv6 addressing and subnetting, and run ipconfig, ping, tracert, and nslookup to diagnose connectivity. Get the port-to-protocol pairs right, especially 22 SSH, 443 HTTPS, and 3389 RDP.

Matching TCP and UDP ports to services such as SSH 22, DNS 53, HTTPS 443, RDP 3389
Distinguishing 802.11 wireless standards, frequencies, and 2.4 GHz versus 5 GHz channel behavior
Configuring IPv4 addressing, subnet masks, default gateways, DNS servers, and DHCP versus static assignment
Using ipconfig, ping, tracert, nslookup, netstat, and net use to diagnose connectivity faults

Common exam traps

Where candidates lose marks on Networking

⚠Confusing TCP and UDP ports for the same service, such as DNS using both 53 TCP and 53 UDP depending on the query type.
⚠Mixing up 2.4 GHz and 5 GHz tradeoffs, assuming higher frequency always gives longer range instead of faster speeds with shorter reach.
⚠Forgetting APIPA 169.254.x.x means DHCP failed, then blaming DNS or the default gateway for the connectivity problem.

220-1101 Networking — Practice Questions

30 questions from this objective · 20% of your 220-1101 exam

Question 2mediummultiple choice

Review the full subnetting walkthrough →

A user reports that their desktop computer can access shared files on the local network but cannot reach the internet. The technician checks the IP configuration and sees the address 169.254.25.100 with a subnet mask of 255.255.0.0. Other computers on the same subnet can access the internet normally. Which of the following is the MOST likely cause?

Question 3mediummultiple choice

Networking

220-1101 Networking — Key Topics

Where candidates lose marks on Networking

220-1101 Networking — Practice Questions

A technician is installing a PoE security camera that is located 85 meters (279 feet) from the network switch. The switch does not support Power over Ethernet (PoE). The camera requires both data connectivity and power over the same Ethernet cable. Which of the following is the best solution?

A technician is installing a new wireless router in a small office. The router is connected to a cable modem that has a solid online light. All wireless clients can connect to the router’s Wi-Fi network, but they cannot access the internet. Which of the following should the technician check NEXT?

A technician is terminating an Ethernet cable for a 1000BASE-T network. The technician uses the T568A standard on one end and T568B on the other. Which of the following describes the resulting cable type?

All 220-1101 Objectives

Networking

220-1101 Networking — Key Topics

Where candidates lose marks on Networking

220-1101 Networking — Practice Questions

A technician is installing a PoE security camera that is located 85 meters (279 feet) from the network switch. The switch does not support Power over Ethernet (PoE). The camera requires both data connectivity and power over the same Ethernet cable. Which of the following is the best solution?

A technician is installing a new wireless router in a small office. The router is connected to a cable modem that has a solid online light. All wireless clients can connect to the router’s Wi-Fi network, but they cannot access the internet. Which of the following should the technician check NEXT?

A technician is terminating an Ethernet cable for a 1000BASE-T network. The technician uses the T568A standard on one end and T568B on the other. Which of the following describes the resulting cable type?

All 220-1101 Objectives