Τεχνικός Υπολογιστών CompTIA A+

An electronics device used to read digital media such as an e-book or e-mag.

A free application from Microsoft that copies files and operating system settings to another drive, removable media, over a network, or to another storage location.

Uses a mathematical algorithm to verify data accuracy. ECC is more expensive than parity, and the motherboard or memory controllers must also have additional circuitry to process ECC.

A command used from a command prompt that prevents characters from displaying on the screen.

Windows 10 browser that is meant to replace Internet Explorer.

A command that brings up a text editor. A text editor enables file creation and modification.

A non-volatile memory technology that can store a small amount of data. EEPROMs were previously used for computer BIOS. Flash memory is used today.

The final permissions granted for a particular resource. Folder permissions are cumulative—the combination of the group and the person’s permissions. The deny permission overrides any allowed permission set for a user or a group. When NTFS and shared folder permissions are both used, the more restrictive of the two becomes the effective permissions.

(Encrypting File System)
A Windows encryption feature in which only the authorized user may view or change a file encrypted with EFS.

Signifies two IDE connectors (four devices) and support of the ATAPI standard.

Knowledge of how to extinguish an electrical fire using fire extinguisher Type A-B-C or fire extinguisher Type C.

An alternative to a key for room or building access.

Security rules specific to email that process incoming messages before forwarding on to a specific user.

A computer that has a specific function within a larger system, such as in medical, manufacturing, or airport industries.

Wireless emergency alert (WEA); a U.S. method of propagating an emergency announcement such as an amber alert, presidential announcement, or weather alert.

Electronic noise generated by electrical devices.

A short burst of energy that can cause problems in electronic equipment.

A technique used to make one operating system act like another operating system.

A method of securing data from unauthorized users in which data is converted into an unreadable format.

A term used with hardware or software that typically means the vendor no longer supports the product.

A centralized solution used for distributing software, configurations, security management, profile management, imaging/re-imaging computers, and inventory management.

A part of change management in which the person who will use an IT system tests the changes to ensure that the deliverables or outcomes have been met.

Every end-user device on a wired or wireless network must be configured with some basic settings, such as an IP address, default gateway, and subnet mask.

A great security method to use because by educating users, security issues get reported and dealt with earlier with less damage to a company. Part of a technician’s job might be to teach a user how to do something to avoid technical issues or to prevent security issues.

A surge protector feature. The greater number of joules that can be dissipated by the surge protector, the more effective and durable it is.

A set of energy efficiency standards including those related to total energy requirements and low power mode(s) and an efficiency standard that a product must meet to achieve this standard.

A list of employees who are authorized in a particular area. Also called an access control roster.

A variable that describes the environment in which a program runs. It contains a name and a value, where the value is the path to the program identified by the variable name.

A housing assembly that encloses a desktop or a laptop computer to protect it from particulate matter (PM) while allowing user access to a keyboard, a mouse, and other components.

A rating system that works with the Environmental Protection Agency (EPA) to identify products that have a green (and clean) design.

A type of non-volatile memory (which means the contents remain when power is removed).

A method in scripting used to compare two values. Another name for comparison operator or equals operator.

A method in scripting used to compare two values. Another name for comparison operator or equality operator.

The components in a device such as a computer that are at the same voltage potential. Grounding is important to personal safety because consistent grounding minimizes the potential of voltages being applied to places it shouldn’t be applied, such as the case. If a piece of equipment is not grounded, someone could receive a shock or be electrocuted simply by touching it.

A component inside a laser printer that neutralizes any charges left on the drum so that the next printed page receives no residuals from the previous page.

A disk used with older Microsoft operating systems to start the computer and begin the operating system repair process.

A Windows tool that checks the drive for file system errors, bad hard drive sectors, and lost clusters.

A code that may be displayed when a printer has inadequate memory or when a computer has a problem.

A type of memory called error correcting code (ECC) memory that can correct memory errors on systems like servers and financial institution computers.

An indication provided by a system or an application that should be noted to help in troubleshooting.

A port used to connect external SATA devices to a computer.

A part that installs into an empty expansion slot that has one or more eSATA ports. Each port on the bracket has a SATA cable that attaches to an available motherboard SATA port.

An adapter used to add external SATA ports so that external storage devices can be used. May include ports for internal SATA devices.

A nonpowered port used to connect external storage devices at a maximum of 2 meters (6 feet).

A port that accepts both eSATA and USB connectors, which can provide power when necessary. Also known as eSATA/USB or power over eSATA.

A specification that provides the BIOS and operating system a means for communicating with plug-and-play devices. As the computer boots, the BIOS records legacy device configuration information. Plug-and-play devices use this information to configure themselves and avoid conflicts. When an adapter has resources assigned and the resources are saved in ESCD, the resources do not have to be recalculated unless a new device is added to the computer.

Occurs when stored-up static electricity is discharged in an instantaneous surge of voltage. Cumulative effects of ESD weaken or destroy electronic components.

A pad that is placed on a surface to prevent electrostatic discharge events. Such a mat commonly has a place to attach an antistatic wrist strap.

An item that fits around a technician’s wrist and connects to an electronic component so that the technician and the component are at the same voltage potential, thus preventing an electrostatic discharge event, which can cause damage to electronic components.

A network system that carries computer data along with audio and video information. Ethernet adapters are the most common network cards.