Chapter 1- Safety and Professionalism

Question 1

Electromagentic Pulse (EMP)

Answer 1

electricity jumping from one place to another in a way that causes damage

Question 2

Electrostatic Discharge (ESD)

Answer 2

the passage of static electric discharge from one place to another

Question 3

Antistatic Wrist Strap/ ESD Strap

Answer 3

a device with an alligator clip one end which connects to a metal part (like the chassis) for grounding and the other end attached with a wire goes to a metal plate secured around the wrist

Question 4

Antistatic Mat/ ESD Mat

Answer 4

a mat that can connect an antistatic strap to you and you can place parts you remove from the computer onto; it keeps you, the computer, and all removed parts on the same electrical potential (mats and wrist straps use resistors and need to be checked often to make sure they are still functional)

Question 5

Antistatic Bag

Answer 5

a bag used for storing parts that sheds static electricity

Question 6

Self-Grounding

Answer 6

a technique that can be applied when ESD prevention tools are not available; occasionally contacting the power supply with bare finger tips will keep you at the same electrical potential as the computer

Question 7

Electromagnetic Interference (EMI)

Answer 7

electrical interference caused by magnets being introduced into the area of electrical components; common magnet containing items that could cause this are: phones, charging bricks, electric motors and devices that have them, etc.

Question 8

Radio Frequency Interference (RFI)

Answer 8

radio frequency interference; techs need to make sure that no two devices are on the same frequency which would cause this type of interference to occur

Question 9

Troubleshooting Methodology

Answer 9

1. Identify the problem
   a. question user and identify user changes,
   perform backups before making any changes

   b. inquire regarding environmental or infrastructure 
   changes
   
   c. review system and applications logs

2. Establish a theory of probable cause
   a. if necessary, conduct research based on
   symptoms
3. Test the theory to determine cause
   a. once theory is confirmed, determine the next
   steps for resolution

   b. if theory is not confirmed, re-establish new 
   theory or escalate

4. Establish a plan of action to resolve the problem and implement the solution
5. Verify full system functionality and if applicable, implement preventative measures
6. Document findings, actions, and outcomes