Which range defines Well Known Ports?

Which range defines Well Known Ports?

• A. 1-1024
• B. 1025-49151
• C. 0-1023
• D. 49152-65535

Answer: (A)

Ports in TCP/UDP are grouped into ranges to show how they're used. Well-known ports are the set reserved for common, foundational services and are traditionally bound by privileged processes. This range is 1 through 1024, covering familiar services like HTTP (80), SSH (22), and SMTP (25). The next block, 1025 through 49151, contains registered ports used by applications that want standardized ports but aren’t part of the fixed well-known set. The final block, 49152 through 65535, holds dynamic or private ports used for ephemeral client connections. Port 0 isn’t typically used for binding to a service. So, the well-known ports range is 1 through 1024.

Ports in TCP/UDP are grouped into ranges to show how they're used. Well-known ports are the set reserved for common, foundational services and are traditionally bound by privileged processes. This range is 1 through 1024, covering familiar services like HTTP (80), SSH (22), and SMTP (25). The next block, 1025 through 49151, contains registered ports used by applications that want standardized ports but aren’t part of the fixed well-known set. The final block, 49152 through 65535, holds dynamic or private ports used for ephemeral client connections. Port 0 isn’t typically used for binding to a service. So, the well-known ports range is 1 through 1024.