What should a web page designer consider when choosing between fixed positioning and absolute positioning?

Fixed positioning is the HTML default element flow, while absolute positioning is relative to the browser window.

Fixed positioning is an offset placement from the normal element layout, while absolute positioning is the HTML default element flow.

Fixed positioning is relative to the browser window, while absolute positioning is located at a specific place on a web page.

Fixed positioning is located at a specific place on a web page window, while absolute positioning is an offset placement from the normal element layout.

In which phase does software coding and testing happen in the spiral model? the spiral model does not have a separate testing phase. both, software coding and testing occurs during the phase.

When making changes to optimize part of a processor, it is often the case that speeding up one type of instruction comes at the cost of slowing down something else. for example, if we put in a complicated fast floating-point unit, that takes space, and something might have to be moved farther away from the middle to accommodate it, adding an extra cycle in delay to reach that unit. the basic amdahl's law equation does not take into account this trade-off. a. if the new fast floating-point unit speeds up floating-point operations by, on average, 2ă—, and floating-point operations take 20% of the original program's execution time, what is the overall speedup (ignoring the penalty to any other instructions)? b. now assume that speeding up the floating-point unit slowed down data cache accesses, resulting in a 1.5ă— slowdown (or 2/3 speedup). data cache accesses consume 10% of the execution time. what is the overall speedup now? c. after implementing the new floating-point operations, what percentage of execution time is spent on floating-point operations? what percentage is spent on data cache accesses?

Read “suburban homes construction project” at the end of chapters 8 and 9 (in the textbook) and then develop a wbs (work breakdown structure) in microsoft excel or in microsoft word (using tables)