What Is True Regarding TCP Port 23

question 40

Multiple Choice

What is true regarding TCP port 23?

• A) Port 23 is the well known port for the telnet service which is a plain text protocol that should no longer be used.
• B) Port 23 is the well known port for the SSH service which provides secure logins.
• C) Port 23 is the well known port for the rlogin service which is SSL secured by default.
• D) Port 23 is the well-known port for the system login services which are encrypted when the user runs the starttls command in his login shell.

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Definitions:

Scanner Class

In Java, the Scanner class is used to read input from various sources, including user input from the console, making it useful for parsing and processing input data.

NextFloat

A method typically seen in programming languages like Java to read or generate the next floating-point number from an input source or a random number generator.

UseDelimiter

A method used in Java's Scanner class to specify a delimiter pattern, defining how text input is broken into tokens.

HasNext

A method commonly used in iterators to check if there is another element in the collection being iterated over.