Multiple choice technology testing What is the maximum number of Virtual lines can be added for a primary line? 1 2 3 4 Reveal answer Fill a bubble to check yourself B Correct answer Explanation The system architecture for IBLc allows a maximum of 2 virtual lines to be associated with a single primary line. Options offering 1, 3, or 4 virtual lines are incorrect because they either underrepresent or exceed this specific system limitation.