CompTIA A+: Operational Procedures Concepts
Importance ★★★★☆ · 21% (estimate)
Overview
This chapter covers how a professional technician works: tracking tickets, writing documentation, managing changes, making backups, working safely, protecting the environment and private data, and talking with customers. Many questions ask for the best or most professional action.
Good records make support easier. Tickets record the user, the problem, the steps taken, and the result. Asset tags and an inventory track equipment. Changes to systems follow change management: write a request with the purpose and scope, assess the risk, plan a rollback, get approval, and test before going live.
Backups protect data. A full backup copies everything. An incremental backup copies only what changed since the last backup of any kind, and a differential copies everything that changed since the last full backup. A common rule is 3-2-1: three copies of data, on two kinds of media, with one copy off-site. Test restores, because an untested backup may not work.
Safety comes first. Unplug equipment before opening it, use an ESD wrist strap to protect parts from static, and lift with your legs. Use a safety data sheet (SDS) to learn how to handle chemicals like toner. Protect private data, respect software licenses, explain things without jargon, and do not paste confidential company data into public AI tools.
Key concepts
Change management
A formal process for making changes: request, purpose, scope, risk analysis, rollback plan, approval, testing, and user acceptance.
Memory tipNo rollback plan = not ready.
Incremental vs. differential
Incremental copies changes since the last backup of any type. Differential copies all changes since the last full backup.
Memory tipRestore incremental: full + every incremental. Differential: full + last differential.
3-2-1 backup rule
Keep three copies of data on two different types of media, with one copy off-site.
Memory tipOne copy must be somewhere else.
ESD
Electrostatic discharge: static electricity that can damage computer parts. Use a wrist strap and antistatic mat.
Memory tipStrap on before you touch parts.
SDS
Safety data sheet: explains how to handle, store, and dispose of a product and what to do after exposure.
Memory tipToner spill? Read the SDS.
Script file types
Common script types: .bat (Windows batch), .ps1 (PowerShell), .vbs (VBScript), .sh (Linux shell), .py (Python), .js (JavaScript).
Memory tipps1 = PowerShell.
Often tested
- Do not open a power supply; its capacitors can hold a dangerous charge even when unplugged.
- Use a Class C fire extinguisher (or a multipurpose one rated for C) on electrical fires; never water.
- A UPS keeps equipment running briefly during a power outage; a surge suppressor only blocks spikes.
- Recycle batteries and toner cartridges according to local rules.
- Do not put customer or company confidential data into public AI tools, and check AI answers before using them.
Easy to confuse: Backup types
| Type | What it copies | What a restore needs |
|---|---|---|
| Full | Everything selected | The full backup only |
| Incremental | Changes since the last backup of any type | Last full + every incremental since |
| Differential | Changes since the last full backup | Last full + the latest differential |
3 sample questions
Verified practice questions from this unit.
Question 1. A technician is about to replace a memory module. What should the technician use to protect the parts from static electricity?
- ① A magnetic screwdriver
- ② Rubber-soled shoes on a carpet
- ③ A wool sweater
- ④ An ESD wrist strap connected to ground
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Answer: ④ An ESD wrist strap connected to ground
Key point: ESD wrist strap protects parts from static
Electrostatic discharge (ESD) is a sudden spark of static electricity that can damage computer parts, even when you cannot feel it. An ESD wrist strap connected to ground keeps you at the same charge as the computer so no spark jumps to the parts.
Wrong choices
- A magnetic screwdriver: Magnets do not protect against static electricity.
- Rubber-soled shoes on a carpet: Walking on carpet can build up static, and rubber soles do not drain it away.
- A wool sweater: Wool can build up static charge, which makes the problem worse.
Question 2. Before opening a desktop computer to replace a part, what should the technician do first?
- ① Turn off only the monitor
- ② Shut it down and unplug the power cord
- ③ Put it in sleep mode
- ④ Leave it plugged in and running to save time
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Answer: ② Shut it down and unplug the power cord
Key point: Power off and unplug before opening a PC
Shutting down and unplugging the PC removes power from the parts. That protects the technician from shock and the parts from damage. Many power supplies keep a small standby power on the motherboard even when off, so unplugging matters.
Wrong choices
- Turn off only the monitor: Turning off the monitor leaves the computer itself powered.
- Put it in sleep mode: A PC in sleep mode still has power inside it.
- Leave it plugged in and running to save time: Working inside a running PC risks electric shock and damage to parts.
Question 3. A toner cartridge broke open and spilled toner. Where should the technician look for information about safe cleanup and disposal?
- ① The change management request
- ② The end-user license agreement (EULA)
- ③ The help desk ticket
- ④ The product's safety data sheet (SDS)
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Answer: ④ The product's safety data sheet (SDS)
Key point: SDS = safe handling and disposal of a product
A safety data sheet (SDS) explains a product's hazards, how to handle and store it, how to clean up spills, how to dispose of it, and what first aid to give. Manufacturers provide one for products like toner.
Wrong choices
- The change management request: A change request plans system changes. It does not cover chemical safety.
- The end-user license agreement (EULA): A EULA covers software license terms, not chemical safety.
- The help desk ticket: A ticket records the problem and the work done. It does not give chemical safety steps.
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