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.
Posts Tagged: Certification
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.
Quantitative Analysis (ALE=SLE x ARO) ALE = Annualized Loss Expectancy (A dollar amount that estimates the loss potential from a risk in a span of year) SLE = Single Loss Expectancy (A dollar amount that is assigned to a single event that represents the company’s potential loss) ARO = Annualized Rate of Occurrence (Frequency of… Read more »
After-action review (AAR): a detailed examination of events that occurred from incident detection to recovery Identify areas of the BC/DR plans that worked, didn’t work, or need improvement AAR’s are conducted with all participants in attendance AAR is recorded for use as a training case AAR brings the BCP/DRP teams’ actions to a close
Result contains: Identified critical functions and required resources
Identify organization’s critical business functions
Review the BIA BIA contains the prioritized list of critical business functions Should be reviewed for compatibility with the BC plan
Project Initiation and Management Develop and Document Project Scope and Plan
Computer/Cyber Crime CryptoLocker Ransomware – Spreads via email and propagates rapidly. Encrypts various file types and then a pop-up window appears to inform user about the actions performed on computer and, therefore demand a monetary payment for files to be decrypted.
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.
The Types of Wireless Attacks Part 2 CompTIA Security+ Objective 1.2 WPS Attacks Wi-Fi Protected Setup (WPS) allows users to configure a wireless network without typing in the passphrase. Instead, users can configure devices by pressing buttons or by entering a short personal identification number (PIN). For example, a user can configure a new wireless… Read more »
The Types of Wireless Attacks Part 1 CompTIA Security+ Objective 1.2 Replay Attacks A replay attack occurs when an attacker copies a stream of messages between two parties and replays the stream to one or more of the parties. Unless mitigated, the computers subject to the attack process the stream as legitimate messages, resulting in a range… Read more »
CompTIA and Immersive Labs are challenging cybersecurity professionals in the United States and United Kingdom to test their penetration testing skills this month. The two organizations launched the pen test challenge on the opening day of RSA® Conference 2019. “Penetration testing, if done right, is a proven and valuable activity that all organizations should engage… Read more »
The nature of cyberattacks is constantly in flux, always evolving to keep pace with the times. Hacking of websites, theft of credit card information and other personal information has become an almost daily occurrence, along with illegal remittances via Internet banking. Recent years have witnessed the accelerating dissemination of new technologies such as IoT… Read more »
“Richard Clarke, a former counter-terrorism expert for the United Government, once said, “If you spend more on coffee than on IT security, you will be hacked. What’s more, you deserve to be hacked”. While the latter is a tad harsh (we wouldn’t wish a cyber attack on anyone!), the former is certainly true.” If you… Read more »
1. Your manager asks you to implement a system that can filter out unwanted content, such as viruses and unproductive Internet content. The best way to accomplish this would be through a system that implements a:
In this cram guide, we would like to give you some short tips on what to study for the Security+ exam to ensure a great score.
One of the most essential portions of information security is the design and topology of secure networks. What exactly do we mean by “topology?” Usually, a geographic diagram of a network comes to mind.
Some of the Security+ exam will test you on your knowledge of some basic email, Internet, and application security issues. Although the amount of detail of knowledge that is required is quite minimal, you must still have a working knowledge of some simple email and application security concepts.
Physical Security Physical security refers to the aspects of information security that are related to physical threats, such as fire or natural disasters. We will cover some basic physical security threats below:
Public Key Cryptography is a widely-applied form of cryptography commonly utilized in many network transactions.
In here we will learn about different symmetric key algorithms and their key features. More importantly, we will learn about some more key concepts related to cryptography as it applies to both symmetric and asymmetric algorithms.
Networking Overview In subsequent chapters of this study guide, we will take a look at different security topologies or ways that networks can be set up with security in mind.
[bs_icon name=”glyphicon glyphicon-chevron-right”] What is a Firewall? A firewall is any hardware or software designed to prevent unwanted network traffic. Some firewalls are simplistic in nature;
[bs_icon name=”glyphicon glyphicon-chevron-right”] Introduction to Cryptography
Viruses, Trojan Horses, Worms Despite all the hype about viruses and worms, the Security+ exam actually does not heavily test on viruses and the like.