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 »
Posts Tagged: CompTIA
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 »
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 »
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Spyware can invade your privacy by recording, passing on and abusing your personal details – including credit card details – all of it behind your back.
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.
Source: Adopted From www.bullguard.com All the information you need on rootkits and how to remove them
Source: Adopted From www.myturbopc.com “Malware” is short for “malicious software” – computer programs designed to infiltrate and damage computers without the users consent.
Source: Adopted From www.computerhope.com Find how much RAM is installed and available in Windows 8 and 10
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.
Source: Adopted From www.computerhope.com [bs_icon name=”glyphicon glyphicon-exclamation-sign”]Tip: This page only covers an overall slow computer and not a computer that has a slow boot up or slow Internet.
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.
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.
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.
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.
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.
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.
The BIOS and CMOS are often times thought to be the same thing, but they are not.
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.
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.
Less commonly referred to as the Centronics interface or Centronics connectorafter the company that originally designed it, the port was later developed by Epson.
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.
What Is Memory, or RAM? System memory, frequently called main memory or RAM (Random Access Memory), is a type of computer memory that can be accessed randomly.
Source mc mcse Certification Resources DoS (Denial of Service) – A DoS attack is a common type of attack in which false requests to a server overload it to the point that it is unable to handle valid requests, cause it to reset, or shut it down completely.
Source mc mcse Certification Resources Physical Security – physical security is just as it sounds, locks on the doors, cameras everywhere, and so forth.
User authentication is the verification of an active human-to-machine transfer of credentials required for confirmation of a user’s authenticity; the term contrasts with machine authentication, which involves automated processes that do not require user input. Source mc mcse Certification Resources PKI (Public Key Infrastructure) – A public key infrastructure (PKI) is the combination of software,… Read more »
Source mc mcse Certification Resources ACL (Access Control List) – An ACL is a table in an operating system or network device (such as a router) that denies or allows access to resources.
Source mc mcse Certification Resources Cable Testers – Cable testers are electronic devices used to test a cable’s integrity by checking for opens and shorts which can cause connectivity problems.
Source mc mcse Certification Resources Application Layer vs. Network Layer – An application layer firewall works at the application layer of a protocol stack.
Source mc mcse Certification Resources Crosstalk Symptoms: Slow network performance and/or an excess of dropped or unintelligible packets. In telephony applications, users hear pieces of voice or conversations from a separate line.
Source mc mcse Certification Resources Gather Information on the Problem In a contact center network, problems are typically discovered and reported by one of the following types of users:
Source mc mcse Certification Resources Bandwidth – is the average number of bits that can be transmitted from the source to a destination over the network in one second.
Source mc mcse Certification Resources Quality of Service – (QoS) is a set of parameters that controls the level of quality provided to different types of network traffic.
The Open Systems Interconnection model (OSI model) is a conceptual model that characterizes and standardizes the communication functions of a telecommunication or computing system without regard to their underlying internal structure and technology.
Multilayer Switch – A multilayer switch (MLS) is a computer networking device that switches on OSI layer 2 like an ordinary network switch and provides extra functions on higher OSI layers.
Hub – A physical layer network device used to connect multiple Ethernet devices together.
Vertical Cross Connect – is a location within a building where cables originate and / or are terminated, reconnected using jumpers or pass throughs or are connected to patch panels or other similar devices where the locations are from upper or lower floors in the building.
[bs_icon name=”glyphicon glyphicon-chevron-right”] Peer to Peer – A peer to peer network is one in which lacks a dedicated server and every computer acts as both a client and a server.
Ethernet – Ethernet is the most widely-installed local area network ( LAN) technology.