List three physical considerations that H C I design addresses.

The following JUnit test method purports to test the add() method from BasicCollection. Assume the setUp() method from BasicCollectionTester is used. Are there problems?

``` public void testAdd() { assertTrue( c.isEmpty() ); assertTrue ( c.contains(“B”) ); assertTrue ( c.contains(“C “) ); assertTrue ( c.contains(“A”) ); assertEquals( c.contains(“Missing”), false ); } ```

The ____________________ design refers to the pattern formed by the locations of the elements of the network, as it would appear if drawn on a sheet of paper.?

Fill in the blank(s) with the appropriate word(s).