Why Operating System Have only 65,535 port Numbers

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Why Operating System Have only 65,535 port Numbers ..

Answer / dez

In older computers with processors operating with a 16-bit
address bus (such as the MOS Technology 6502 and the Zilog
Z80), 65535 was the highest addressable memory location.
Such processors thus supported at most 64 kibibytes (64
KiB) of total memory. Of course, this is assuming byte-
addressed memory.

Is This Answer Correct ?    5 Yes 1 No

Why Operating System Have only 65,535 port Numbers ..

Answer / sonu singh

Any application identify by TCP/UDP through port number .
in tcp/udp header field we see that port number is 16 bit
calculated value . so operating system have only 65535 port
number.....

Is This Answer Correct ?    4 Yes 0 No

Why Operating System Have only 65,535 port Numbers ..

Answer / silver ghost

Because poerno are 16bit

Is This Answer Correct ?    9 Yes 9 No

Why Operating System Have only 65,535 port Numbers ..

Answer / shailendra pandey

becoz no of protocol is also 65535,so we difine to every protocol a port no

Is This Answer Correct ?    2 Yes 8 No

Why Operating System Have only 65,535 port Numbers ..

Answer / s.m.feroz ahmed

Hi,

It is by default provided by Microsoft a maximum of 65,535
ports and one can open 65,535 IE browser sessions at a time
on each computer.

Is This Answer Correct ?    2 Yes 10 No

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