CompTIA A+ Port Numbers Quiz - Test Your TCP Port Knowledge
Ready to ace the TCP ports quiz? Dive in and test your port numbers mastery!
This CompTIA A+ port numbers quiz helps you practice key TCP ports for IMAP, POP3, FTP, HTTPS, and more. Work through fast questions to build recall and spot gaps before the exam. Need a refresher first? Review the basics , then start when you're set.
Study Outcomes
- Recall Standard Port Numbers -
After completing the quiz, readers will be able to accurately recall common TCP port assignments such as FTP (21), IMAP (143), and HTTPS (443).
- Distinguish Key Network Protocols -
Readers will learn to match network protocols to their respective port numbers, enhancing their understanding of how services like POP3 and SMTP function.
- Apply Port Assignments in Practical Scenarios -
Users will be able to apply correct port numbers when designing, configuring, or troubleshooting network services in real”world environments.
- Evaluate Quiz Performance -
Readers will use instant scoring feedback to identify areas of strength and those needing improvement in their port number knowledge.
- Prepare Strategically for A+ Exam Questions -
This quiz will help candidates focus their study efforts by reinforcing port number areas most commonly tested on the CompTIA A+ certification.
- Enhance Speed and Accuracy in Port Identification -
By practicing under timed conditions, readers will build the confidence to quickly and accurately identify port numbers during exams and on-the-job tasks.
Cheat Sheet
- Well-Known TCP Port Range -
The TCP port numbers from 0 - 1023 are "well-known" and standardized by IANA, making them critical for network services (IETF RFC 6335). CompTIA A+ objectives emphasize memorizing the top ten, such as 21, 22, 25, 53, 80, 110, 143, and 443. Try a mnemonic like "FTP-SSH-SMTP-DNS-HTTP-POP-IMAP-HTTPS" to lock these in place.
- FTP Control vs. Data Ports -
According to RFC 959, FTP uses port 21 for control commands and port 20 for data transfer, a distinction tested on the A+ exam. Remember "21 talks, 20 ships" to differentiate control from data channels. Understanding active vs. passive modes further prepares you for troubleshooting scenarios.
- HTTP (80) vs. HTTPS (443) -
HTTP traffic runs on port 80, while HTTPS secures communications over port 443 with SSL/TLS encryption, per IETF standards. A simple way to recall is "Secure starts with S, so it's port 443." Knowing the TLS handshake steps will boost your confidence on port-based security questions.
- Email Retrieval: POP3 (110) & IMAP (143) -
POP3 on port 110 downloads and often deletes mail locally, whereas IMAP on port 143 syncs messages across devices (RFC 1939 and RFC 3501). Use the phrase "POP out, IMAP in sync" to remember their behaviors and ports. This distinction is a popular topic in network port numbers quizzes.
- Secure Shell & Remote Access Ports -
SSH runs on port 22 for encrypted terminal sessions, replacing Telnet on port 23 to prevent clear-text credentials (RFC 4251). Remember "22 is for you, no snooping," and contrast it with Telnet's insecure 23. Solid grasp of these a+ tcp port assignments ensures secure remote management.