Passwords Are Widely Used Because They Can Be Used at Little

Passwords are widely used because they ________. A)are demanded by users B)offer strong authentication C)are the only authentication techniques known by most security professionals D)are inexpensive to use

A user picks the password tiger.This is likely to be cracked most quickly by a(n)________. A)attack on an application running as root B)brute-force attack C)dictionary attack D)hybrid dictionary attack