________ is a microblogging social networking site

In recursive backtracking, if one set of recursive calls does not result in a solution to the problem, what happens?

a. The program returns to a previous decision point and makes a different decision. b. The program backs up to the previous decision point and throws an exception. c. The program continues, with unexpected results. d. The program backs up to the original method call.

In order to generate a public and private key for use with SSH, what command line utility should you use?

a. ssh-keygen b. key-generate c. ssh-newkey d. gpg --ssh