Final answer:
The "well-known" range of ports are 0 to 1023 and they are reserved for specific services such as HTTP and FTP.
Step-by-step explanation:
The range of ports referred to as the "well-known" ports are from 0 to 1023. These ports are assigned by the Internet Assigned Numbers Authority (IANA) and are reserved for specific services and protocols. For example, port 80 is typically used for HTTP traffic, while port 21 is used for FTP. Knowing these ports is essential for various networking tasks and security configurations.