CompTIA Network+ — Domain Name System (DNS)

Posted filed under CompTIA Network+.

Follow @ASM_Educational     (Domain Name System) The Internet’s system for converting alphabetic names into numeric IP addresses. For example, when a Web address (URL) is typed into a browser, DNS servers return the IP address of the Web server associated with that name. In this made-up example, the DNS converts the URL www.company.com into… Read more »

CompTIA Network+ — Networking Tools

Posted filed under CompTIA Network+.

Follow @ASM_Educational   From Wikipedia   A. Cable Tester- A cable tester is an electronic device used to verify the electrical connections in a cable or other wired assembly. Generally, a cable tester consists of:   1. A source of electric current 2. A volt meter 3. A switching matrix used to connect the current… Read more »

CompTIA Network+ DNS Records Types

Posted filed under Amazon AWS, CompTIA Network+.

Follow @ASM_Educational   From Wikipedia     Type Description Function A Address Record  Returns a 32-bit IPv4 address, most commonly used to map hostnames to an IP address of the host,but it is also used for DNSBLs, storing subnet masks in RFC 1101, etc. CNAME  Canonical Name Record Alias of one name to another: the… Read more »

CompTIA Linux+ Troubleshooting

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In order to make troubleshooting as easy as possible, you should always use an organized methodology. Using simple best practices will do just that.

CompTIA Linux+ Configuration

Posted filed under CompTIA Linux+.

Configuring your Xwindows No matter what desktop environment you chose, it is most likely that it will use the Xwindows architecture.

CompTIA Linux+ Installation

Posted filed under CompTIA Linux+.

Media Linux installation can be done using a variety of different media. Each installation method has different pros and cons depending on the environment you have. Here are some examples:

CompTIA Linux+ Planning the Implemenation

Posted filed under CompTIA Linux+.

Linux Uses Linux is a pretty flexible operating system. Although it has got a lot of credibility over the years as a stable server platform, it is also an excellent desktop platform. Databases, mail servers as well as many appliances can be installed.

CompTIA Linux+ What is Linux?

Posted filed under CompTIA Linux+.

Linux is a 32 bit open source operating system. It is based on the very popular Unix operating system and it’s code is freely available (thus explaining the “open source” label as opposed to closed source where the code is not available freely).

CompTIA A+ Training (Display Adapters and Monitors)

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Follow @ASM_Educational Source by Wikipedia Monitor Connectors: · If you are using a Monochrome / CGA/ EGA monitor, it is a digital monitor and will have a DB-9 Male connector that plugs into a digital adapter. · If you are using a VGA/ SVGA monitor, it will have a male DB-15 connector that plugs into… Read more »

CompTIA A+ Training (Laptop Buses)

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Follow @ASM_Educational Source by Wikipedia A bus is a set of signal pathways that allow information to travel between components inside or outside of a computer. Laptop Buses PCMCIA or PC Card Personal Computer memory card international association is a type of bus use for laptops. There are different types of cards and you primarily… Read more »

CompTIA A+ Training (Other Types of Bus)

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Follow @ASM_Educational Source by Wikipedia A bus is a set of signal pathways that allow information to travel between components inside or outside of a computer. Other Types of Bus USB USB or Universal Serial Bus is an external bus that most popular form of bus use today USB is hot swappable USB can daisy-chain… Read more »

CompTIA A+ Types of Bus

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Follow @ASM_Educational Source by Wikipedia A bus is a set of signal pathways that allow information to travel between components inside or outside of a computer. Types of Bus External bus or Expansion bus allows the CPU to talk to the other devices in the computer and vice versa. It is called that because it’s external… Read more »

CompTIA A+ – MOD Advanced Computer Troubleshooting II

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Follow @ASM_Educational Source Quizlet   What are three common problem areas with laptops? Displays Storage devices and RAM Power and input devices     What tasks are associated with verifying work order information? Troubleshooting     What are the three possible areas that a technician must check for printer errors? The device Cable connection The… Read more »

CompTIA A+ – MOD Advanced Computer Troubleshooting I

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Follow @ASM_Educational Source Quizlet   Most often, what is the reason for a need for advanced troubleshooting? It means that the probable cause is difficult to diagnose     What are the six steps of troubleshooting? Identify the problem Establish a theory of probable cause Test the theory to determine the cause Establish a plan… Read more »

Binary and Hexidecimal Conversion Tutorial

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Follow @ASM_Educational Source Learning About Computers   What are binary numbers? The binary number system is when only two numbers are used – 0 and 1. It is also called base 2. The computer number system is base 2. Our number system is referred to as decimal or base 10 because we use 10 digits… Read more »

How To Install a Power Supply

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Follow @ASM_Educational Source Learning About Computers   To install a power supply is really quite easy. It fits in the top back of the case. First, orient the holes on the power supply to those on the case.     Then, place the unit in the space provided and slide it in until the screw… Read more »

Where should fingers be placed on the keyboard?

Posted filed under CompTIA A+.

Source Computer Hope     As you can see in the picture below, your left-hand fingers should be placed over the A, S, D, and F keys and your right-hand fingers should be placed over the J, K, L, and ; keys.

CompTIA A+ -Thermal printer

Posted filed under CompTIA A+.

thermal_transfer

Source: Adopted From www.computerhope.com 1. A thermal impact printer or electrothermal printer is a printer that uses heated pins to “burn” images onto heat-sensitive paper.

CompTIA A+ -Inkjet printer

Posted filed under CompTIA A+.

Source: Adopted From www.computerhope.com The most popular printer for home computer users that prints by spraying streams of quick-drying ink on paper. The ink is stored in disposable ink cartridges, often a separate cartridge is used for each of the major colors.

CompTIA A+ -LED Printer

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Source: Adopted From www.computerhope.com Similar to a laser printer, LED printers are non-impact but use a light-emitting diode instead of a laser in the printhead.

CompTIA A+ -Laser printer

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Source: Adopted From www.computerhope.com First developed at Xerox PARC by Gary Starkweather and released in 1971, a laser printer is a printer that utilizes laser technology to print images on the paper.

CompTIA A+ -Dot matrix Printer

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dot-matrix-printer

Source: Adopted From www.computerhope.com   1. The term Dot matrix refers to the process of using dots to form an image. In a dot matrix image, the image quality is determined by the number of dots per inch.

CompTIA A+ -AIO Printer

Posted filed under CompTIA A+.

Source: Adopted From www.computerhope.com Alternatively referred to as a Multifunction printer(MFP), AIO is short for All-In-One. It is used to describe a hardware device such as an all-in-one printerthat is a printer, fax, and scanner all in one device.

CompTIA A+ -Printer

Posted filed under CompTIA A+.

Source: Adopted From www.computerhope.com A printer is an external hardware output device responsible for taking electronic data stored on a computer or computing device and generating a hard copy of that data.

CompTIA A+ -Riser board

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riser-board

Source: Adopted From www.computerhope.com A riser board is a circuit board that gives a computer motherboard the option for additional expansion cards to be added to the computer.

CompTIA A+ How to connect an external monitor to my laptop

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Source: Adopted From www.computerhope.com Almost all laptops can connect to an external display and have the laptop display sent to that external display instead of, or in addition to, the laptop screen. Examples of an external display include a CRT monitor, flat panel display, projector, or TV.

CompTIA A+ What can I upgrade in a laptop?

Posted filed under CompTIA A+.

Source: Adopted From www.computerhope.com Unlike a desktop computer, laptops and other portable computers often do not offer many upgrade options. Below is a listing of common laptop upgrade questions and the answers to each of the questions regarding laptop and portable computer upgrades.

CompTIA A+ How a virus works

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Source Computer Hope     The word “virus” is often used as a common term for all malicious programs, but technically a virus is a program or code that attaches itself to a legitimate, executable piece of software, and then reproduces itself when that program is run.

CompTIA A+ What is Spyware?

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Spyware can invade your privacy by recording, passing on and abusing your personal details – including credit card details – all of it behind your back.

CompTIA A+ What is a computer worm?

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Source: Adopted From www.bullguard.com An essential guide on computer worms and how they actually work A computer worm is similar to a computer virus, but unlike a virus it does not need to attach itself to an existing program.

CompTIA A+ How to Remove Malware

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Source: Adopted From www.myturbopc.com “Malware” is short for “malicious software” – computer programs designed to infiltrate and damage computers without the users consent.

CompTIA A+ Why is my online game so slow?

Posted filed under CompTIA A+.

Source: Adopted From www.computerhope.com A game’s online performance can be attributed to many factors. Below is a listing of some of the different causes of why an online game may be slow or laggy.

CompTIA A+ Why is my Internet connection so slow?

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Source: Adopted From www.computerhope.com A slow Internet connection can be caused by any number of reasons. Below is a short list of some of the more common reasons your Internet connection may be slow.

CompTIA A+ My Windows computer boots up slow

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Source: Adopted From www.computerhope.com A slow Microsoft Windows boot up can be caused by a number of different issues. The following document contains various suggestions and tips that can help improve the overall speed of your computer’s startup.

CompTIA A+ Testing my computer motherboard and CPU for failures?

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A bad computer motherboard or CPU can cause an assortment of different issues on your computer. Below are just a few of the possible issues you may encounter. It is important to remember that the issues below can also be caused by more than just a bad motherboard and CPU.

CompTIA A+ Heat sink

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A heat sink is an electronic device that incorporates either a fan or a peltier device to keep a hot component such as a processor cool.

CompTIA A+ Fan

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heatsink

A hardware device that keeps the overall computer or a computer device cool by circulating air to or from the computer or component. The picture is an example of a fan on a heat sink.

CompTIA A+ Chipset

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chipset

A chipset is a group of microchips that are designed to work with one or more related functions that were first introduced in 1986 when Chips and Technologies introduced the 82C206.

CompTIA A+ Northbridge and Southbridge

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Southbridge and Northbridge

Southbridge The southbridge is an IC on the motherboard responsible for the hard drivecontroller, I/O controller and integrated hardware. Integrated hardware can include the sound card and video card if on the motherboard, USB, PCI, ISA, IDE, BIOS, andEthernet.

CompTIA A+ Super I/O

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superio

Short for super input/output or Super I/O, SIO is anintegrated circuit on a computer motherboard that handles the slower and less prominent input/output devices shown below.

CompTIA A+ Parallel port

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parallel-port

Less commonly referred to as the Centronics interface or Centronics connectorafter the company that originally designed it, the port was later developed by Epson.

CompTIA A+ Game control adapter

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Originally known as the Analog-to-Digital port (A-to-D port), the as a game port, joystick port, or game control adapter is a 15-pin connector port first found onIBM computers in 1981.