Why does the ABD recommend a hardwired internet connection for online proctored CORE Exams?

A hardwired internet connection (as opposed to wireless) is strongly recommended, when possible, because even a temporary loss of internet connectivity can interrupt or shut down an exam. Recognizing that a hardwired connection is not always possible or practical, the ABD cautions candidates against taking an exam on a wireless network with spotty internet coverage, or where other broadband-intensive tasks are happening simultaneously, such as family members streaming movies.