The OSI model

Posted filed under CompTIA Network+.

Follow @ASM_Educational Taking a Network+ exam? Follow us on Facebook and ask us about our study group.     The (Open Systems Interconnection) OSI has been developed by International Organization for Standardization (ISO). The OSI model provides a framework for creating and implementing networking standards and devices and describes how network applications on different computers… Read more »

802.11: Wi-Fi Standards

Posted filed under CompTIA Network+.

Follow @ASM_Educational Taking a Network+ exam? Follow us on Facebook and ask us about our study group. WiFi is not an acronym but a brand name created by a marketing firm that’s meant to serve as an interoperability seal for marketing efforts. WiFi technology however provides wireless Internet access via the use of radio waves… Read more »

COMPARE AND CONTRAST THE CHARACTERISTICS OF NETWORK TYPES

Posted filed under CompTIA Network+.

Follow @ASM_Educational Taking a Network+ exam? here are some network types you should know. What is a LAN ? A local area network (LAN) is a computer network within a small geographical area such as a home, school, computer laboratory, office building or group of buildings. A LAN is composed of inter-connected workstations and personal… Read more »

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 »

Amazon AWS DNS Records Types

Posted filed under Amazon AWS.

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 Network+ DNS Records Types

Posted filed under 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

Posted filed under CompTIA Linux+.

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).

Which IT Certification should I get first?

Posted filed under ABOUT IT.

Follow @ASM_Educational Do You Have What It Takes for a Career in Technology? Information Technology (IT) has become such a widespread career choice. But few people actually know what IT is and what its discipline entails. The digital world may tempt you to jump on the information technology wagon. But is it the right choice… Read more »

CompTIA A+ Training (System Utilities)

Posted filed under CompTIA A+.

Follow @ASM_Educational System Utilities CompTIA A+ Exam objectives 1.5 (Given a scenario, use Microsoft operating system features and tools.) What are system utilities? Utility programs are designed to carry out specific tasks. The tasks to be carried out are not typically performed by the operating system as part of its day to day operating of… Read more »

CompTIA A+ Training (Server Roles)

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Follow @ASM_Educational     Server Roles CompTIA A+ Exam objectives 2.5 (Summarize the properties and purposes of services provided by networked hosts.) What do server roles achieve? Server roles allow there to be more convenient or efficient options of doing specific tasks, such as accessing the internet, or using the printer.      Here are… Read more »

Common Cloud Models

Posted filed under CompTIA A+.

Follow @ASM_Educational Common Cloud Models CompTIA A+ Exam objectives 4.1 Introduction to Cloud Computing Simply put, cloud computing is the delivery of computing services—including servers, storage, databases, networking, software, analytics, and intelligence—over the Internet (“the cloud”) to offer faster innovation, flexible resources, and economies of scale. You typically pay only for cloud services you use,… Read more »

Different Motherboard Form Factors

Posted filed under CompTIA A+.

Follow @ASM_Educational What are the Different Motherboard Form Factors? CompTIA A+ Exam objectives 1.2: sizes. Introduction to Motherboards A motherboard (MB), also known as a Mainboard, system board or logic board, is the central or primary circuit board in a Personal Computer (PC). It is an extremely complex electronic system that every device in a… Read more »

Backup and recovery

Posted filed under CompTIA A+.

Follow @ASM_Educational Backup and recovery procedures protect your data against data loss and reconstruct the data, should loss occur. When searching for a backup solution, you’ll find that there are two main types of backups: “file-level backup” and “image-level backup.” File-Level Backup File-level backups are the most common type of backup. This method has been… Read more »

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 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. 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

Posted filed under CompTIA A+.

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 holes are aligned…. 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

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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

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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

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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

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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

Posted filed under CompTIA A+.

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?

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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?

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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.