The bottom line is that passive scanning in systems can expose a lot of information about all aspects of the system in normal communications without intruding upon operations. Active scanning has the potential to discover more information, and when combined with passive scanning, it gives a more complete picture.
Brick sizes vary depending on the country, the manufacturer and the purpose for which they are intended. In the United States, standard modern bricks are usually about 8 Ã 4 Ã 2.25 inches (203 Ã 102 Ã 57 mm). modular bricks are 7 5/8 long x 3 5/8 thick x3 5/8 deep.
Multiply the paver brick's length by its width. This will give you the size of the paver brick expressed in square inches. For example, if the length of the paver brick is 3 inches and the width of the paver brick is 6 inches you would multiply these two numbers together to get 18 square inches.