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.
King Size Brick are 9 5/8. L x 2 5/8 H x 2 3/4 thru the wall, for a nominal face dimenion of 10 x 3 with a standard 3/8 mortar joint. They conform to ASTM C652 and are made at most Acme Brick plants. Use of Acme King Size Brick results in lower labor cost, lower mortar cost, and faster construction time.