When you're running cable, what is the heart of a basic star network?

It is common to use gettimeofday(2) to measurethe performance of a code segment under study,similar to the following: struct timeval start, end;

If the code segment executes in only 1 microsecond, describe two ways that you can prevent the execution cost of calling gettimeofday from interfering with your measurements

Which of the following is the most commonly used for describing the position of the background image with the background-position property?

A. pixel values B. percentages C. em values D. All of these are equally used.