Users notice a problem with their network connectivity when additional lights are turned on. Which
of the following would be the cause for this problem?

A.
DDOS

B.
Cross talk

C.
Open short

D.
EMI

Explanation:

External Machine Interface (EMI), an extension to Universal Computer Protocol (UCP), is a
protocol primarily used to connect to short message service centres (SMSCs) for mobile
telephones.