Joining strings together is known as?

One common task you'll need to accomplish with any language involves merging or combining strings. This process is referred to as concatenation. The best way to describe it is when you take two separate strings – stored by the interpreter – and merge them so that they become one.

system programmer option d is correct

because an operating system is software that manages computer hardware and system resources.

it would be a. excessive network collisions or d. slow connectivity between devices those would be my answer.