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Which of the following NVT (Network Virtual Terminal) control characters, means "refusal to enable option"?

Which of the following NVT (Network Virtual Terminal) control characters, means "refusal to enable option"? Correct Answer WONT

The correct answer is option 2.

Concept:

A network virtual terminal is a communications concept that describes a range of data terminal equipment (DTE) that may be accommodated in the same network but has distinct data speeds, protocols, codes, and formats. TELNET solves this problem by defining a universal interface called the Network Virtual Terminal (NVT) character set.

Control Characters:

To send control characters between computers, NVT uses an 8-bit character set in which the highest-order bit is set to 1. lists some of the control characters and their meanings.

Character Decimal Binary Meaning
EOF 236  11101100  End of file
DONT 254 11111110  Denial of option request
WONT 252 11111100 Refusal to enable the option
EOR 239 11101111    End of record
BRK 243 11110011      Break
IAC 255 11111111  Interpret (the next character) as control

 Hence the correct answer is WONT.

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