Strictly speaking, VPNs use tunneling protocols; therefore, they need to encrypt tunneled traffic.

There was a 63 percent increase in ________ users in the fourth quarter of 2009.

a. CMOS b. CD-ROM c. DVD d. VOD

Here is a recursive function that is supposed to return the factorial. Identify the line(s) with the logical error(s). Hint: This compiles and runs, and it computes something. What is it?

What will be an ideal response? ``` int fact( int n ) //a { int f = 1; //b if ( 0 == n || 1 == n ) //c return f; //d else { f = fact(n - 1); //f f = (n-1) * f; //g return f; //h } } ```