Which one is not a valid port number?
Created by Codedamn about a year ago
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Hey, is a backend developer expected to know the well known port numbers? Or like the absolute details of this topic?
Hey, wanted to know how one should find a port number is valid or not
what is the difference between 3rd and 4th options they both contain 5 digits, i need to know
Option 3 is valid because the highest TCP port number is 65535
65,535 The highest TCP port number is 65,535. The TCP protocol provides 16 bits for the port number, and this is interpreted as an unsigned integer; all values are valid, apart from 0, and so the largest port number is (2^16 - 1) or 65,535.
source : google search
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I did not notice in the video that the highest TCP number is 65535. I had to make some research to understand.
Well-known : 0 - 1,023 Registered ports: 1,024 - 49,151 Dynamic and/or private ports :49,152 - 65,535
Port Number range ( 0--65535 )
I don't think anyone can answer the quiz question above after watching the Port topic video. Because there is no mention of port number and its ranges or its size. Maybe we are required to do our own research on the topic and answer? Probably, it makes a lot of sense if quiz questions are related to the topic discussed in the video.
Below comment is just a feedback not a major concern. :)