What is the highest numbered TCP/IP port?

A.
2047

B.
32767

C.
65535

D.
131071

Explanation:
There are 65535 possible ports officially recognized.
Note:
TCP uses the notion of port numbers to identify sending and receiving applications. Each side of a
TCP connection has an associated 16-bit unsigned port number assigned to the sending or
receiving application. Ports are categorized into three basic categories: well known, registered and
dynamic/private. The well known ports are assigned by the Internet Assigned Numbers uthority
(IANA) and are typically used by system-level or root processes. Well known applications running
as servers and passively listening for connections typically use these ports. Some examples
include: FTP (21), TELNET (23), SMTP (25) and HTTP (80). Registered ports are typically used
by end user applications as ephemeral source ports when contacting servers, but they can also
identify named services that have been registered by a third party.
Dynamic/private ports can also be used by end user applications, but are less commonly so.
Dynamic/private ports do not contain any meaning outside of any particular TCP connection. com