FlashGenius Logo FlashGenius
⚡ Free Adaptive Network+ Study Game

Network+ Port Rush: CompTIA N10-009 Port & Protocol Trainer

Practice CompTIA Network+ N10-009 common ports, protocols, services, and troubleshooting clues with an adaptive quiz that focuses on the ports you keep missing. Learn untimed with memory hooks, then switch to timed challenges, build streaks, unlock badges, and track mastery before test day.

View Common Ports Full Network+ Practice

Free CompTIA Network+ N10-009 Ports Quiz

CompTIA Network+ candidates need more than a memorized list of numbers. The N10-009 exam expects you to understand common networking ports, the services that use them, the transport protocols behind them, and the troubleshooting clues that point to each service. This free Network+ ports quiz uses spaced repetition to help you practice the ports most likely to appear in exam-style questions, including FTP, SSH, Telnet, SMTP, DNS, DHCP, TFTP, HTTP, NTP, SNMP, LDAP, HTTPS, SMB, Syslog, SMTPS, LDAPS, SQL Server, RDP, SIP, POP3, and IMAP.

Use the game below to practice in four ways: service-to-port recall, port-to-service recognition, TCP versus UDP selection, and scenario-based troubleshooting. The goal is not just to remember that DNS uses port 53 or that HTTPS uses port 443. The goal is to recognize exam clues such as “hostnames fail but IP addresses work,” “a client receives a 169.254.x.x address,” or “Windows file sharing is blocked after a firewall change.”

Best for CompTIA Network+ N10-009 learners who want adaptive, repeatable port and protocol practice.
What's new Adaptive spaced repetition, untimed Practice vs timed Challenge, memory hooks, category focus, and keyboard play.

Tip: Start in Practice (untimed) to learn the ports with memory hooks. The game tracks which ports you miss and shows them more often. When recall feels automatic, switch to Challenge (timed) to pressure-test it.

Practice ports first. Then test full Network+ readiness.

Port numbers are only one part of N10-009. FlashGenius helps you practice networking concepts, implementation, operations, security, and troubleshooting with domain practice, mixed practice, exam simulation, flashcards, and Smart Review.

Try Full Network+ Practice

Port Rush

Answer port questions. The game focuses on the ports you miss most.

🧠 Practice
Score0
Streak0
Accuracy0%
StatusReady
Question

Press “Start” to begin.

Keyboard: press 1–4 to answer, Enter for the next question, H for a hint.

Your Port Mastery

This trainer uses spaced repetition. Each correct answer moves a port up a level; a miss moves it back down. A port is marked mastered at level 3 of 5, and weak ports are shown more often automatically. Use “Focus Weak Ports” to drill only your lowest-mastery items.

Scored below 80%?

Ports are only one part of CompTIA Network+. Practice full N10-009 networking concepts, infrastructure, operations, security, and troubleshooting questions with FlashGenius domain drills, mixed practice, mock exams, flashcards, and Smart Review.

Start Full Network+ Practice

CompTIA Network+ N10-009 Objective 1.4 Common Ports

Network+ candidates should understand the port number, transport protocol, service purpose, and typical troubleshooting clue. Do not memorize ports in isolation; connect each port to what breaks when that service is blocked or misconfigured. The memory hook column gives you a quick mental peg for each one.

Service Port Protocol Memory Hook Exam Clue

How CompTIA Network+ Tests Port Numbers

Network+ port questions are often written as short troubleshooting or service-identification scenarios. The exam may not simply ask, “What port does DNS use?” It may describe a symptom and expect you to identify the related service, protocol, or firewall rule.

Scenario Clue Likely Service / Port
User can reach IP addresses but not domain names.DNS / 53
Client receives a 169.254.x.x address.DHCP / 67-68
Admin needs encrypted command-line access.SSH / 22
Legacy unencrypted remote terminal access is mentioned.Telnet / 23
Secure web application traffic is blocked.HTTPS / 443
Windows file sharing stops working after firewall changes.SMB / 445
Network monitoring cannot poll device status.SNMP / 161
Network devices cannot send alert notifications.SNMP Trap / 162
Centralized logging stops receiving messages.Syslog / 514
Remote desktop access to a Windows host fails.RDP / 3389

TCP vs UDP Ports for Network+

For Network+, memorizing the port number is only half the job. You should also know whether the service commonly uses TCP, UDP, or both. TCP is connection-oriented and is commonly used when reliable delivery matters, such as SSH, HTTP, HTTPS, SMB, and RDP. UDP is connectionless and is commonly used for lightweight or time-sensitive services such as DHCP, TFTP, NTP, SNMP, and Syslog.

Some services can use both TCP and UDP. DNS commonly uses UDP for standard queries and TCP for zone transfers or larger responses. LDAP can also use TCP or UDP depending on the use case. In the game above, use Protocol Duel to practice these distinctions until you can answer without guessing.

Common Network+ Port Mistakes

Mistake Correction
Confusing SSH and Telnet.SSH uses TCP 22 and is encrypted; Telnet uses TCP 23 and is unencrypted.
Confusing HTTP and HTTPS.HTTP uses TCP 80; HTTPS uses TCP 443.
Forgetting DHCP has two ports.DHCP uses UDP 67 for the server and UDP 68 for the client.
Mixing up SNMP polling and traps.SNMP uses UDP 161 for queries and UDP 162 for traps.
Assuming DNS is only UDP.DNS commonly uses UDP 53, but TCP 53 is also used in specific cases.
Forgetting SIP secure signaling.SIP commonly uses 5060 and secure SIP commonly uses 5061.
Mixing up secure mail ports.IMAPS is 993 and POP3S is 995; SMTP submission is 587.

How to Use This Network+ Port Trainer

1. Learn untimed in Practice mode

Start in Practice (the default). There is no clock and no lives, so you can focus on learning. Every answer shows the correct port, protocol, and a memory hook. Stuck? Press the Hint button (or H) to reveal the hook before you answer.

2. Let spaced repetition target your weak spots

The trainer tracks how well you know each port. Ports you miss appear more often; ports you have mastered fade out. Use “Focus Weak Ports” to drill only the ports at your lowest mastery levels, and the Focus dropdown to study one category (such as Email or Remote Access) at a time.

3. Pressure-test in Challenge mode

When recall feels automatic, switch to Challenge for a 60-second timed round with three lives. This rebuilds the time pressure of the real exam. Finish Protocol Duel and Troubleshooting in Challenge mode to confirm you can recall fast and reason from clues, not just match flashcards.

About This Network+ Ports Trainer

This trainer was created by FlashGenius to help CompTIA Network+ candidates practice common port numbers, protocols, services, and troubleshooting clues aligned to the N10-009 exam. It uses spaced repetition and memory hooks so your study time goes to the ports you find hardest. Last updated: June 2026.

Network+ Ports FAQ

What ports should I memorize for Network+?

Focus on the N10-009 common ports: FTP 20/21, SFTP/SSH 22, Telnet 23, SMTP 25, DNS 53, DHCP 67/68, TFTP 69, HTTP 80, POP3 110, NTP 123, IMAP 143, SNMP 161/162, LDAP 389, HTTPS 443, SMB 445, Syslog 514, SMTPS 587, LDAPS 636, IMAPS 993, POP3S 995, SQL Server 1433, RDP 3389, and SIP 5060/5061.

Does Network+ ask port number questions?

Yes. Network+ can test common port numbers, protocols, and how they relate to troubleshooting or service identification.

Should I learn TCP and UDP too?

Yes. Knowing the port number alone is not enough. You should also know whether the service commonly uses TCP, UDP, or both.

How do I memorize ports faster?

Use short daily sessions, group related services together, lean on the memory hooks, review missed answers with spaced repetition, and connect each port to a real-world troubleshooting clue.

What is the difference between Practice and Challenge mode?

Practice mode is untimed with no lives, so you can learn calmly with hints and explanations. Challenge mode is a 60-second timed round with three lives to simulate exam pressure once you already know the material.