Cisco CCIP Certification Exam 642-661

You are working as a technician at certifyme.com. A user wishes to have help with
removing some discoloration on her CRT monitor. Which of the following should
you do in order to degauss the CRT monitor?

A. Run the Windows degauss utility.
B. Run an electromagnet across the screen while the system is on.
C. Display an all white picture on the screen for 48 hours.
D. Run the degauss routine built into the monitor.VCP-101V

Answer: D


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Explanation: Degaussingis the process of decreasing or eliminating an unwanted
magnetic field.642-565 Monitors use a metal plate near the front of the tube to focus the
electron beams from the back. This plate, the shadow mask, can pick up strong
external fields and from that point produce discoloration on the display.642-661 To
minimize this, CRTs have a copper coil wrapped around the front of the display,
known as the degaussing coil. A degauss causes a magnetic field inside the tube to
oscillate rapidly, with decreasing amplitude. This leaves the shadow mask with a
small and somewhat randomized field, removing the discoloration