Which server tier is considered to be the most robust and less prone to failure?

Nikki sent flyers in the mail to all houses within the city limits promoting her computer repair service what type of promotion is this and example of

Write a program that performs a simple n-body simulation, called "jumping leprechauns." this simulation involves n leprechauns, numberd 1 to n. it maintains a gold value g_i for each leprechaun i, which begins with each leprechaun starting out with a million dollars worth of gold, that is, g_i = 1000000 for each i = 1,. in addition, the simulation also maintains, for each leprachaun, i, a place on the horizon, which is represented as a double-precision floating point number, x_i. in each iteration of the simulation, the simulation processes the leprachauns in order. processing a leprachaun i during its iteration begins by computing a new place on the horizon for i, which is determined by the assignment:

Who should have a career portfolio, and how often should it be updated? only artists need a career portfolio, which they should update after every gallery show. everyone should have a career portfolio, which they should update daily with their professional activities. all students should have a career portfolio, which they should update ever semester until they graduate. most professionals need a career portfolio, which they should update with regularly with important achievements.