________ are large groupings of hacked, remote-controlled computers used to distribute and install software

This allows a remote user to connect to their desktop machine

A. Remote assistance B. Remote desktop C. VPN D. File share

Which of the following terms are used to describe defining a class so that the implementation of the member functions is either not known or at least is irrelevant to its use

a) walling up b) encapsulation c) abstraction d) Caging up the data and functions e) Information hiding