Τεχνικός Υπολογιστών CompTIA A+

A type of cloud service that describes servers, databases, operating system, storage, and development tools provided in an outside environment to relieve the support burden on companies that need an environment to perform high-level programming and develop applications.

Encapsulated data found at Layer 3 of the OSI model.

A feature provided by Intel that allows up to 64 GB of physical memory to be used for motherboards that support it.

In Windows hard disk caching, a 4 KB block of memory space. The operating system swaps or pages the application to and from the temporary swap file (paging file) as needed if RAM is not large enough to handle the application.

A single block of memory space, 4 KB in size, used to store files that may also retrieve a file located on a disk.

A temporary file in hard disk space used by Windows that varies in size depending on the amount of RAM installed, available hard drive space, and the amount of memory needed to run the application. Also known as a swap file.

A method of encoding color for video systems.

A network of personal devices such as cell phones, laptop computers, and other mobile devices that can communicate in close proximity through a wired network or wirelessly. A Bluetooth wireless keyboard and mouse form a PAN.

A part of a Linux GUI and similar to macOS, Panel is a menu bar at the top of the screen containing contextual information on the left side with static information on the right side.

A problem that occurs when paper gets stuck along the printer paper pathway.

A problem that may be due to poor paper quality or to the inefficiency of the rubber rollers that move the paper.

See PATA.

A Windows security option for controlling websites that children can access or limiting the amount of time they can use a computer or the Internet.

A method of checking data accuracy.

A process that can divide a hard drive so that the computer sees more than one drive.

A table that holds information about the types and locations of partitions created. In mechanical hard drives, it occupies the outermost track on the platter (Cylinder 0, Head 0, Sector 1) and is part of the master boot record.

Security configuration on a mobile device.

A Linux/Unix command to set or change a user password.

A policy that may be contained within the security policy that defines password requirements (length and types of characters) as well as the password change process.

In Active Directory, locate the user account, right-click on it, and select Reset Password.

The act of being conscientious about where passwords are written and stored.

A BIOS/UEFI settings that provide protection of the BIOS menu option by configuring one or more passwords to access the Setup program.

PAT is used to allow one public IP address for thousands of private IP addresses by the device performing network address translation also tracking port numbers so that traffic streams can be identified and sent to the device that originally requested the data from inside a company to a device on a network outside the company. Some technical articles and technicians refer to PAT as network address translation (NAT).

A technology used with IDE devices that allows two devices per channel.

A piece of software that fixes a specific problem in an application or operating system.

Used with twisted pair cable as a central location to which network cables terminate. It mounts in a network wiring rack, has network ports on the front, and has wiring connected to the back to provide network connectivity.

A security best practice in which the operating system, drivers, and BIOS/UEFI are kept up to date so that known security issues are addressed.

A security best practice for mobile devices in which the operating system (OS) and radio firmware for devices such as cell phones are updated.

A reference that tells where a file is located among drives and folders (directories).

Used in programming and scripting to tell a program where to find the files that it may need.

A common name for a computer, derived from the IBM PC brand.

A generic term for the entities surrounding business using payment cards, such as debit and credit cards, for transactions.

A type of regulated data related to a credit card, debit card, and the finance industry.

An older 32-bit and 64-bit, 66 MHz local bus standard found in computers.

The speed at which data is delivered when the PCI main bus is used on the motherboard. Commonly operates at 33 MHz and 66 MHz.

A point-to-point serial bus used for motherboard adapters. Each bit can travel over a lane, and each lane allows transfers up to 250 MB/s, with a maximum of 32 lanes (which gives a total of an 8 GB/s transfer rate).

The main high-speed serial motherboard bus, designed to replace the PCI, PCI-X, and AGP bus standards.

An expansion slot mostly found on servers that provided 32- or 64-bit data transfers.

A set of codes that allow any application to send output to a specific printer.

A local bus architecture used in older laptops.

A USB standard that allows up to 20 V at 5 A for 100 watts of power. The standard has five levels of power: 10 W, 18 W, 36 W, 60 W, and 100 W.

Part of the operating system installation process that is used to get the operating system installed or reinstalled when the OS is corrupt or has issues.

A computer’s performance is affected by the virtual memory settings, which allocate a specific amount of hard drive space that can be used when more applications and data are loaded than the amount of RAM installed.

A Windows tool that monitors resources such as memory and CPU usage and that allows creation of graphs, bar charts, and text reports.

A utility that monitors memory and other hardware parameters usage aspects.

Part of a computer technician’s work kit: safety glasses/goggles, latex or nonlatex/vinyl gloves, and an air filter/dust mask.

1 thousand terabytes, or 250 (1,125,899,906,842,600) bytes.

A type of processor housing.

A type of processor housing used in mobile devices.

A type of encryption used to protect emails and data.