Infrared technology is the preferred technology for wireless devices.

Authentication is the process of determining what users should be able to do.

a. true b. false

Which of the following statements creates a multidimensional array with 3 rows, where the first row contains 1 element, the second row contains 4 elements and the final row contains 2 elements?

a. int[][] items = {{1, null, null, null}, {2, 3, 4, 5}, {6, 7, null, null}}; b. int[][] items = {{1}, {2, 3, 4, 5}, {6, 7}}; c. int[][] items = {{1}, {2, 3, 4, 5}, {6, 7}, {}); d. int[][] items = {{1}, {4}, {2}};