Τεχνικός Υπολογιστών CompTIA A+

An ANSI/TIA/EIA Ethernet network cabling standard.

An ANSI/TIA/EIA Ethernet network cabling standard.

A mobile device with a touchscreen, camera(s), microphone, and possibly one or more ports, such as sound, USB, miniDisplayPort, or miniThunderbolt. Tablets connect to the Internet; take, send, receive, and store pictures and video; and are often a good choice for people who travel. Trade in, donate, or recycle broken or old tablets responsibly.

A secure method of authentication using a server.

A breach of physical security that occurs when an unauthorized person enters a secure space behind an authorized person. Training and diligence by all employees are the only ways to stop tailgating.

A wireless device used to securely authorize payment for a transaction.

A means of backup used with servers.

A Windows-based utility that displays memory and processor usage data and also displays currently loaded applications as well as currently running processes.

A Windows-based utility that allows applications or tasks to be executed periodically or at a specific date and time. This can include a systemwide message.

A Windows icon that allows the user to create multiple desktops and switch between them.

On a Windows program, the bar that runs across the bottom of the desktop. It holds buttons that represent files and applications currently loaded into RAM. It also holds icons representing direct access to system tools.

A command used to halt a process or task.

A command used to list process IDs for active applications and services. This command should be used before the taskkill command.

An OSI model Layer 4 standard that ensures reliable communication between two devices.

Also known as TCP/IP printing, the ability to connect to and print to a printer that has been assigned an IP address.

The most widely used network protocol stack for connecting to the Internet. Developed by the Defense Advanced Research Projects Agency in the 1970s, it is the basis of the Internet.

A device used to check fiber connectivity.

The ability to work with others toward a common goal.

A nonsecure application protocol that allows connection to a remote network device. Telnet uses port 23. Commonly replaced by the more secure SSH.

Computers should operate in temperatures between 60 and 75 degrees.

Approximately 1 trillion bytes of information, or 240 (1,099,511,627,776) bytes.

The terminal emulator for macOS and Linux that allows the command line interface (CLI) access to the operating system. Certain tasks or functions are not GUI-friendly, and CLI commands are required.

Software on a server that allows multiple simultaneous client sessions.

Allows sharing of Internet connectivity among mobile devices in the area. It is a form of hotspot.

A file where each byte represents one character of ASCII code. Scripts are all text files.

A nonsecure means of quickly transferring files from one device to another device.

Applied between the processor and its heat sink to provide a thermal pad that disperses heat more evenly.

A printer commonly used in retail that uses heat and special thermal paper to create the printed image.

A feature found on memory modules that is used by the BIOS/UEFI to read and adjust settings for optimum performance.

A type of printer that uses wax-based inks similar to the solid ink printer, but it prints at lower resolutions.

A smart IoT device that is programmable and can be remotely controlled through a phone or tablet. It provides real-time data.

See standard thick client.

A type of computer that does not have all the ports and components (such as a hard drive) of a traditional PC. It includes basic applications, meets minimum requirements for the selected OS, and has network connectivity.

A unit of programming code that receives a slice of time from Windows, so it can run concurrently with other units of code or threads.

The ability to control processor speed by slowing the processor down when it is not used heavily or is running too hot.

An adapter that allows the addition of a Thunderbolt port to a computer that does not have one. A Thunderbolt port is an updated port that uses some of the DisplayPort technology developed by Intel and Apple.

A type of video port on PCIe adapters or on Apple computers.

A square block on a Windows 8/10 Start screen with a picture of the function it performs when activated.

A bundled application in macOS that performs full and incremental system backups to an external hard drive. It gets its clever naming from the capability to navigate past backups as if traveling backward through time.

How much time you budget and then actually spend on doing each task throughout the workday.

Part of the operating system installation process is to set the regional time, date, and language preferences.

A security feature in which, after a period of nonuse, the computer requires a username and password to again access the computer.

A method of encryption that is an improvement over WEP because the encryption keys periodically change.

A set of rules that provide secure transmissions over a network.

A technology used with LCDs.

A tool used with a toner probe to identify cables when they are unlabeled or incorrectly labeled.

The combined particles in a laser toner cartridge that produce an image when fused onto paper. Harmful if inhaled. Messy if spilled.

In this situation, determine if the problem is in the fuser assembly or elsewhere in the printer; send output to the printer. When the printer finishes the writing stage and before the toner fuses to the paper, open the laser cover and remove the paper. If the paper is error free, then the problem is most likely in the transfer corona or fusing assembly.

A vacuum used inside a laser printer that will not damage the vacuum as a result.

A type of fiber S/PDIF connection.