Τεχνικός Υπολογιστών CompTIA A+

The number of 1s and 0s transmitted per second.

A feature in the System Preferences iCloud menu that enables you to browse that Mac from another macOS device. The remote Mac appears as a shared device in Finder, enabling you to browse the file system.

A situation in which one or more documents have been queued up for printing, and the printer does not execute the print command, causing a logjam effect.

A fluorescent lamp or LEDs that are always on for an LCD.

A precautionary technique used to have a secondary piece of hardware or backup software/files.

A process that should be performed as part of an implementation plan as well as a disaster prevention/recovery plan.

A process that involves making a backup and then verifying that the backup works.

In software, the ability of an application to run on older operating systems.

A security device to allow entry into a space.

The width of a communications channel, which defines the channel’s capacity for carrying data.

A handheld device that reads barcodes in checkout lanes and in retail establishments.

A networking technology in which the entire cable bandwidth transmits a digital signal.

An update applied to a phone’s radio firmware (a low-level software that manages items related to the phone’s radio).

A snapshot of a computer’s performance (memory, CPU usage, and so on) during normal operations (before a problem or slowdown is apparent).

A Windows term for a drive that has been partitioned and formatted.

A Windows term for a partition. Contrast with dynamic storage.

A Windows-based script that can only be interpreted by the Windows operating system. A batch file has the extension .bat.

A small self-contained unit used to power a device without using an AC outlet.

A device that provides power to the computer when a brownout or a blackout occurs.

A portable battery pack that can be charged and carried to charge a mobile device in lieu of plugging the mobile device into an outlet.

In this situation, inspect the battery compartment. Try to charge with a different connector, such as a car adapter.

A portable battery device that can be charged and carried to charge a mobile device in lieu of plugging that device into an outlet.

The number of times an analog signal changes in 1 second. If a signal that is sent changes 600 times in 1 second, the device communicates at 600 baud. Today’s signaling methods (modulation techniques, to be technically accurate) allow modems to send several bits in one cycle, so it is more accurate to speak of bits per second than baud.

A command that can modify the Windows boot settings.

An optical medium with a higher data capacity than a CD or DVD.

A Blu-ray drive or disc to which information can be written to one time.

A Blu-ray drive or disc to which information can be written, erased, or rewritten.

A good work habit to have. If you are going to be late for work, contact your supervisor. If you are going to be late for a customer appointment, notify the customer.

In an inkjet printer, the belt connects to the stepper motor and print head assembly to move the print head and ink cartridge from one side of the printer to the other side.

A device used to authenticate someone based on one or more physical traits, such as a fingerprint, an eyeball (retina), or a hand, or a behavioral trait such as voice or signature.

A device that uses a physical trait such as a fingerprint, handprint, retina characteristics, or facial data points to allow access to a resource or location.

The use of one or more devices that can authenticate someone based on one or more physical traits such as a fingerprint, an eyeball (retina), or a hand, or a behavioral trait such as voice or signature.

A chip that contains computer software that locates the operating system, POST, and important hardware configuration parameters. Also called ROM BIOS, Flash BIOS, or system BIOS. Replaced with UEFI BIOS.

An electrically charged 1 or 0.

A Microsoft utility that encrypts an entire disk volume, including operating system files, user files, and paging files. The utility requires two disk partitions at a minimum.

A Microsoft application that can encrypt and password protect external drives and removable media that are 128 MB or larger.

In this situation, check the video cable, power to the display, and the video card, if installed. Use the Safe Mode or Last Known Good Configuration boot option.

A method of denying access to a user, an app, a website, protocols, or devices into a company or particular network device.

A total loss of AC power.

In this situation, check the video cable, power, motherboard, and CPU.

A type of optical disc technology that uses a blue laser instead of a red laser (like the kind used in CD/DVD drives) to achieve higher disc capacities.

blue screen of death

A wireless technology for personal area networks (PANs).

A connector used on coaxial cable.

An Apple printer server that enables Apple and Windows devices to share printers without any configuration required.

The process of a computer coming to a usable condition.

A boot loading utility designed to assist with partitioning, installation, and support in running Windows on a Mac.

In the BIOS configuration settings, boot options prioritizes devices in the order in which the computer looks for boot files. Also known as boot drive order, boot sequence, or boot menu.

A setting within BIOS/UEFI to control the order in which the computer looks to devices for an operating system.

A type of partition found in Windows that contains the operating system. The boot partition can be in the same partition as the system partition, which is the part of the hard drive that holds hardware-specific files.