What is topdown approach of software design?

When you turn on your computer it says error loading operating system What do you do? System vulnarability and abuse in information security in information system? What is a impact chart? When will someone be asked by Norton about renewal of their antivirus? Is it better to do mca after bca or is it better to get a job and do mca in correspondence? What does the G5 do in the Army? What is an asterisk in technology? Three different operations that can be carried out durin file updating? Which keyboard shirtcut activates the menu bar in word so that you can access menu commands using the keyboard's arrow or letter keys? Can you download Wolf Quest on Linux? A class network class is reserved for special purposes? Where is the computer at on a 1996 dodge ram? Majour function of computer operating system? What part of the computer that transfer the data from one part of the computer to another? What is an information system from both technical and police perspective? Information travels between components on the motherboard through what? How are networks classified? What protocols function is simply to inform the transmitter of what piece of data is expected next? What is a collection of millions of computers interlinked to one another called? What is the meaning of word pad in computing?