__________ provide authentication which can legally prove who sent a message over a network.
a. Digital signatures
b. DES keys
c. Directory keys
d. Screen names
e. User Ids
Answer: a. Digital signatures
__________ provide authentication which can legally prove who sent a message over a network.
a. Digital signatures
b. DES keys
c. Directory keys
d. Screen names
e. User Ids
Answer: a. Digital signatures