159、short () clear.

135、Different fragments of the database are in different locations.

134、6.The separation between application software and a DBMS the need for such reprogramming.

133、TCP will establish a full-duplex communication between the two .

132、4.Many operating systems also influence the “look and feel” of your software-what kind of menus and controls are the screen, and how they react to your input.

131、3.The input data( ) is frames which are transmitted sequentially.

130、2.In other words, the user determines data and instructions are recorded on them.

129、ROM chips are for applications in which data is only read.

128、data analysis

127、neywork layer

126、client machine