I think it's called shadowing, or job shadowing to be more specific.
Answer:
OphCrack LiveCD.
Explanation:
The user examines that server of a client, as well as requires complete control of such a system. To avoid recognizing its invasion by certain security programs, he wants to select a LiveCD which can break Operating System's credentials, and he would have been using OphCrack LiveCD because it used to crack the credential of the Windows user.
So, the following are the reason by which the answer is correct according to the scenario.
<span> the new way of </span>removing duplicates<span> from an iterable while keeping it in the original order </span>
