A snail goes up A feet during the day and falls B feet at night. How long does it take him to go up H feet? Given three integer numbers H, A and B (A>B), the program should output a number of days

Which of the following “invisible” marks represents an inserted tab?

In which part of a professional email should you try to be brief, but highly descriptive?

The open systems interconnection (osi) reference model: defines standards for many aspects of computing and communications within a network. is a generic description for how computers use multiple layers of protocol rules to communicate across a network. defines standards for wireless local area network (wlan) communication protocols. details the advantages and disadvantages of various basic network cabling options.