Which range of port numbers is called the ‘well-known’ port numbers?

A.
1 to 1023

B.
1024 to 16385

C.
1024 to 2048

D.
1024 to 65535

Explanation:
The ports in the range 1-1023 are known as the well-known port numbers. These ports are used
by the server part of a connection.
Incorrect Answers:
B: The ports above 1023 are not called well known ports. These ports are used for client ports or
for alternate server ports when the defaults ar not used. The ports in the range of 1024-65535 (all
the ports above 1023) are known as Ephemeral ports. Ports in the range of 1024-49151 are called
registered ports, and ports 49152-65535 are dynamic or private ports.
C: The ports above 1023 are not called well known ports. These ports are used for client ports or
for alternate server ports when the defaults ar not used. The ports in the range of 1024-65535 (all
the ports above 1023) are known as Ephemeral ports. Ports in the range of 1024-49151 are called
registered ports, and ports 49152-65535 are dynamic or private ports.
D: The ports above 1023 are not called well known ports. These ports are used for client ports or
for alternate server ports when the defaults ar not used. The ports in the range of 1024-65535 (all
the ports above 1023) are known as Ephemeral ports. Ports in the range of 1024-49151 are called
registered ports, and ports 49152-65535 are dynamic or private ports.