Sometimes a document can be more effective if the text is formatted in multiple columns.

Firewalls are installed on a network to protect a company's internal network from dangers on the Internet

a. true b. false

What will be the value of x[8] after the following code is executed?

``` final int SUB = 12; int[] x = new int[SUB]; int y = 100; for(int i = 0; i < SUB; i++) { x[i] = y; y += 10; } ``` a. 170 b. 180 c. 190 d. 200