Assume that your version of vim does not support multiple Undo com- mands. If you delete a line of text, then delete a second line, and then a third line, which commands would you use to recover the first two lines that you deleted?

A digital signature is used to guarantee who sent a message. This is referred to as non-repudiation

Indicate whether the statement is true or false.

Early 100BaseT NICs, just like 10BaseT NICs, could send and receive data, but not at the same time-a feature called ____________________.

Fill in the blank(s) with the appropriate word(s).