Professor Messer

Troubleshooting Hardware – CompTIA A+ 220-1201 – 5.1

Many troubleshooting tasks will involve computers, laptops, and other hardware. In this video, you’ll learn how to troubleshooting with the Power On Self Test (POST), blue screen of death (BSoD), proprietary error messages, blank screens, no power, sluggish performance, and overheating. << Previous: Cloud Characteristics Next Video: Troubleshooting Storage Devices >> As you’re most likely […]

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Cloud Characteristics – CompTIA A+ 220-1201 – 4.2

A cloud infrastructure can use many different technologies during normal operation. In this video, you’ll learn about internal vs. external clouds, metered cloud usage, elasticity, availability, file synchronization, and multitenancy. << Previous: Cloud Models Next Video: Troubleshooting Hardware >> Many organizations will build their own private cloud. They have their own data center that they

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Cloud Models – CompTIA A+ 220-1201 – 4.2

There are many different models for deploying a cloud infrastructure. In this video, you’ll learn about public vs. private cloud deployments, infrastructure as a service (IaaS), software as a service (SaaS), and platform as a service (PaaS). << Previous: Virtualization Services Next Video: Cloud Characteristics >> You’ll often hear cloud computing described as a server

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Virtualization Services – CompTIA A+ 220-1201 – 4.1

There are many different methods to virtualize an operating system. In this video, you’ll learn about hypervisors, type 1 and type 2 virtualization, CPU support, network requirements, virtual desktop infrastructure (VDI), and containerization. << Previous: Virtualization Concepts Next Video: Cloud Models >> To be able to take advantage of virtualization, you need something that is

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Virtualization Concepts – CompTIA A+ 220-1201 – 4.1

Virtualization provides a way to run multiple operating systems simultaneously on the same physical system. In this video, you’ll learn about virtualization, sandboxing, developing software, legacy software use, and cross-platform virtualization. << Previous: Impact Printer Maintenance Next Video: Virtualization Services >> With virtualization, you can have one physical device and run multiple operating systems on

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Impact Printer Maintenance – CompTIA A+ 220-1201 – 3.8

Maintaining a dot-matrix printer includes a number of basic tasks. In this video, you’ll learn about ribbon replacement, print head replacement, and paper replacement. << Previous: Impact Printers Next Video: Virtualization Concepts >> Replacing the ribbon in a dot matrix printer is something that you will do from time to time, because this printer does

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Thermal Printer Maintenance – CompTIA A+ 220-1201 – 3.8

Maintaining a thermal printer involves a number of different tasks. In this video, you’ll learn about thermal paper replacement, heating element cleaning, removing debris, and thermal paper sensitivity to heat. << Previous: Thermal Printers Next Video: Impact Printers >> If you’re using a thermal printer, you don’t have to worry about ink, and you don’t

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Inkjet Printer Maintenance – CompTIA A+ 220-1201 – 3.8

Inkjet printer maintenance can keep your printer running at peak efficiency. In this video, you’ll learn about cleaning print heads, replacing inkjet cartridges, inkjet printer calibration, and clearing jams. << Previous: Inkjet Printers Next Video: Thermal Printers >> One of the biggest problems you’ll run into on an inkjet printer is keeping that print head

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