A ________________ tests that you are getting a signal across a wire.

Which two commands are used from a Linux command-line environment to allow commands that require administrative privilege to be executed? (Select two.)

A) admin B. administrator C. su D. access E. sudo

Joe received a digitally signed message from Grace What cryptographic key should he use to verify that digital signature?

a. Grace's public key b. Grace's private key c. Joe's public key d. Joe's private key