Τεχνικός Υπολογιστών CompTIA A+

A type of coaxial cable terminal end that simply screws into the receiving connector.

A type of security lock on a mobile device or computer that uses the integrated camera and stored data to determine whether someone is granted access to the computer.

A drive partition that contains files and folders including the operating system, drivers, and preinstalled programs that is used when a system must be rebuilt, restored, or re-created or when troubleshooting Windows problems.

An option to reset a computing device back to original settings.

A condition that arises due to inadequate ribbon, ink level, or toner. Check quality settings. In a thermal printer, reduce the print head energy or print head pressure setting.

An error condition that occurs when a boot device such as a hard drive is not responding.

A Windows feature that locks out a user after a specific number of failed login attempts.

A Windows condition that may require operating system repairs or reload.

A mechanical cooling device attached to or beside the processor or in the case.

A method of organizing a computer’s file system.

A file system type also known as FAT16.

An old file system that was originally designed for floppy disks.

A file system supported by DOS and all Windows versions since DOS. DOS and Windows 9x have a 2 GB limit. Newer Windows operating systems have a 4 GB FAT16 partition size limit.

A file system that supports hard drives up to 2 TB in size.

The capability to continue functioning after a hardware or software failure. An example of fault tolerance with hard drives is RAID configurations.

Predicts what data is used and puts that data on an SSD that is separate from the mechanical hard drive.

A piece of hardware used to store data on a 3.5-inch magnetic disk (or wider for really, really old computers).

A high-speed fiber network that uses the ring topology and token passing access method.

The part of a computer responsible for taking the paper through the printer.

On a printer, a device that rolls the paper through the paper tray.

A type medium or Internet connection that carries data using light.

An expensive network cabling made of plastic or glass fibers that carry data in the form of light pulses. Handles the greatest amount of data with least amount of data loss. Comes in single mode and multi-mode.

High-speed, high-capacity computer network composed of fiber-optic cables.

A serial device setting that enables or disables the UART’s buffer.

An electronic container holding data or computer code that serves as a basic unit of storage.

A Windows tool that allows backing up a specific user’s libraries instead of the entire system and supports scheduling these backups.

A symptom of malware.

An application used to recover data from a storage device.

A computer configured to store files that can be accessed and managed from a remote location.

Defines how data is stored on a drive. Examples of file systems include FAT16, FAT32, exFAT, and NTFS.

A specific type of file based on the application that created it. For example, a .txt file created in Word is a different file type than an Acrobat reader .pdf file.

A method of backup that involves backing up files one file at a time. Contrast with image-level backup.

The name of a file. In older operating systems, the filename was limited to 8 characters plus a 3-character extension. Today’s operating systems allow filenames up to 255 characters.

Finder is used for navigating and managing files or folders in the file system. It is similar to Microsoft’s Windows Explorer/File Explorer.

A type of security lock on mobile devices and computers that requires a valid and stored fingerprint to be matched with the fingerprint of the person trying to gain access.

A biometric device used for user identification.

Software or a hardware device that protects one or more computers from being electronically attacked. It inspects data for security purposes and filters traffic based on network protocols and rules established by a network administrator. Firewalls operate at the application layer of the OSI model.

A combination of hardware and software attributes. An example is a BIOS chip that has instructions (software) written into it.

Also known as flashing the BIOS, obtaining and installing updates to the BIOS/UEFI so that the latest options or security patches are applied.

A wearable mobile device.

A type of motherboard memory that allows updates by disk or by downloading Internet files.

A type of non-volatile memory that holds data when the power is off.

A peripheral used to digitize a photo or text.

In this situation, check the resolution, refresh rate, and video cable. Move the display to see if the flicker is related to display movement.

The display has something on it that appears and then disappears. In this situation, check the video cable.

Numbers that can be written in the form x÷y, which means they are numbers that include a decimal value, even if that value is 0. For example, the number 7 is an integer, but the number 7.0 is a floating-point number.

A serial device setting that determines the communication method.

In Windows-based operating systems, an electronic container that holds files as well as other folders. It is also called a directory.

A feature of Microsoft Active Directory that maps a folder on the local machine to a network location such as a server so the user has access to the folder from any device on the network domain.

A shorthand way to write a while loop.