The undo function is used to reverse a mistake, such as deleting the wrong word in a sentence. The redo function restores any actions that were previously undone using an undo. ... For example, if you typed a word, and then deleted it using an undo, the redo function would restore the word you delete
What do you mean by redo?
: to do (something) again especially in order to do it better. : to change (something, such as a room or part of a room) so that it looks new or different. See the full definition for redo in the English Language Learners Dictionary.
<em>What is Undo ?</em>
<em>What is Undo ?Undo is an interaction technique which is implemented in many computer programs. It erases the last change done to the document, reverting it to an older state. In some more advanced programs, such as graphic processing, undo will negate the last command done to the file being edited.</em>
Answer:
a. Telnet transmissions are not encrypted.
Explanation:
Indeed, since <em>Telnet transmissions are not encrypted,</em> all the information sent, and even the characters typed in the telnet console are sent in clear text.
This is a security issue, since any other device in the same network will receive a copy of the information (packets) sent. For default, all the devices, except for the server expecting to receive the information, will discard the packets. However it is easy to actively <em>listen </em>and keep those packets, wich will contain the information in plain text and human readable.
