Port Number Quiz

See how well you know default TCP and UDP ports in 10 minutes. Get a quick, no sign up score from 16 items that builds confidence for setup and troubleshooting.
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Questions1610 minutes
Hi! My name is Freudly, i am an AI therapist, I will give you an interpretation of the test after you complete it.
08:30
July 22, 2026
July 22, 2026
Material has been updated
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2 completions
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Verified by Daniel Hall
Psychologist with 25 years of experience
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How the Scales are Structured

example score
11/16
Port Number Knowledge (PNK)
Measures how accurately you identify established default or well-known TCP/UDP service ports across common IT scenarios.
Foundational
Developing
Strong
0NaNFoundational7NaNDeveloping13NaNStrong
A score of 11 indicates developing knowledge, with practical familiarity with many common ports but some remaining gaps among similar or specialized services.
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DATA-BASED USER COHORTS

Who Usually Takes This Test?

IT Support Technicians
41%OF USERS
They use it to check how quickly they can recall default ports when diagnosing connectivity issues and configuring services.
Networking Students
34%OF USERS
They take it as quick practice for exams and labs that expect memorization of common TCP and UDP service ports.
Security and DevOps Pros
25%OF USERS
They use it to sanity-check port knowledge for firewall rules, incident triage, and hardening common infrastructure.
BASED ON AGGREGATED, ANONYMIZED DATA FROM TENS OF THOUSANDS OF FREUDLY USERS.
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See How You Compare

Once you complete the test, your results are compared with real-world data from people in your country.
Below is a preview of how scores are typically distributed across each scale.
Port Number Knowledge (PNK)
Average
10
Normal range
7.512.5
min.
0
max.
16
Majority
This curve shows how scores are typically distributed.
Once you complete the test, your result will appear on the scale so you can see how you compare.
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CLEAR ANSWERS TO COMMON QUESTIONS

Frequently Asked Questions

What does this quiz measure?
It measures knowledge of established default TCP and UDP service ports used in common networking tasks. Items cover recognition, basic configuration, and troubleshooting scenarios.
How many questions are included, and how long does it take?
The quiz includes 16 multiple-choice questions. Typical completion time is about 10 minutes.
What topics are covered?
Content includes web browsing, email, remote access, core networking services, directory services, and databases. Questions focus on port numbers commonly used as defaults.
Do the questions assume services always use standard ports?
No; services can be configured to use nonstandard ports. Questions refer to widely accepted default ports unless stated otherwise.
How should results be interpreted?
Use the total score to gauge familiarity with common service ports and related scenarios. The score is an informal indicator and is not a certification or clinical assessment.
WHAT THE TEST MEASURES
About This Assessment

Port Number Quiz - Symptoms and Signs

How well do you know the default ports behind web browsing, email, remote access, networking, directories, and databases? This free 16-question port number quiz combines quick trivia with practical configuration and troubleshooting scenarios. Choose the best answer for each question, then use your total to gauge your knowledge of common TCP and UDP service ports. No sign-up is needed. Services can be configured to use nonstandard ports, so questions refer to established defaults.

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