Computers infected by a virus, worm, or Trojan horse that allows them to be remotely controlled for malicious purposes are called ________.

By the late 1980s, ________ was the primary Internet backbone

A) CERN B) CSNET C) NSFNET D) ARPANET

What is the printout of the following switch statement?

``` char ch = 'a'; switch (ch) { case 'a': case 'A': cout << ch << endl; break; case 'b': case 'B': cout << ch << endl; break; case 'c': case 'C': cout << ch << endl; break; case 'd': case 'D': cout << ch << endl; } ``` A. aa B. a C. abcd D. ab