Technician A says when the brakes are applied in a vacuum ...

[Pea0909berry]

Technician A says when the brakes are applied in a vacuum booster, the vacuum control valve is sealed.
  Technician B says the vacuum control valve is opened. Which technician is correct?
 
  A) Technician A only B) Technician B only
  C) Both technicians A and B D) Neither technician A nor B

Question 2

Technician A says interference from cell phone or CB antennae may the disrupt the ABS control unit. Technician B says many system problems can be located with a thorough visual inspection. Which technician is correct?
 
  A) Technician A only B) Technician B only
  C) Both technicians A and B D) Neither technician A nor B

[cegalasso]

Answer to Question 1

A

Answer to Question 2

C

[Pea0909berry]

TYSM

Thanks for the timely response, appreciate it