Τεχνικός Υπολογιστών CompTIA A+

A Linux command used to list the contents of the current working directory.

Wired media used in networking or a type of Internet connection that could also be used to deliver video channels.

A security device to prevent theft of a laptop.

A system that helps keep network cables neat and organized. Ladder racks are a type of a cable management system.

A modem that connects to the cable TV network.

A setting used on PATA IDE devices when a special cable determines which device is the master and which one is the slave.

A tool used to cut away the sheathing over a cable’s copper wire. Also called a wire stripper.

A tester that checks coaxial and UTP cable ends (depending on the model) to determine if cable terminals are suitable for use.

Fast memory designed to increase processor operations.

A technology that uses software on a PC in order to create a plan for something.

A print head alignment process that must be performed when installing the printer and when replacing the print head.

A peripheral used to capture video.

In this situation, check the cable, use the proper key, and ensure that the external monitor or projector is turned on.

A technology used on web-based forms to prevent an attack where the form is filled out automatically and submitted multiple times to overwhelm the network device that hosts the form. The user is presented with randomized text or graphic and then required to input a response.

An internal inkjet printer part that carries the printhead.

Another name for Category 5 twisted pair cable that has a bandwidth maximum of 100 MHz, a maximum transmission speed of 100 Mb/s, and a 100-meter (328-foot) maximum cable distance.

Another name for Category 5e twisted pair cable that has a bandwidth maximum of 100 MHz, a maximum transmission speed of 1,000 Mb/s, and a 100-meter (328-foot) maximum cable distance. This type of cable reduces crosstalk found in Cat 5 cable.

Another name for Category 6 twisted pair cable that with the Cat 6a specification has a bandwidth maximum of 500 MHz, a maximum transmission speed of 10,000 Mb/s, and a 100-meter (328-foot) maximum cable distance.

The older flat-panel backlight technology used before LED backlights were used.

The same as the chdir command in Windows. Used from a Windows or a Linux/macOS command prompt to move into a different directory.

A storage medium that holds up to 700 MB of data, such as audio, video, and software applications.

A type of drive that cannot write to a disc.

A CD drive that can write data multiple times to a particular disc.

A file system for optical media.

A mobile device used to make calls using the cellular network (or wireless network, if enabled) and optionally to run apps.

Also called a cell signal analyzer, software that shows information about the cellular network and sometimes 802.11 wireless networks as well.

A type of network connection provided by a cell phone carrier that can also provide access to the Internet.

Used to connect a laptop to a cell phone network.

A group of people that are called in to handle a security incident.

A security measure that provides proof that printed material or stored data has been destroyed.

An alternative to a user ID/password credential that can be provided by smart cards and other security devices that allows someone to access a website or an application and that is used in the corporate environment.

A group of individuals who approve IT projects within an organization.

A security best practice is to change the default admin user account password or create an account that has Administrator access and disable the default account.

The formal process of systematically choosing and implementing business changes.

A specific number that signifies the frequency used by a wireless device to transmit and receive. Also called a channel ID.

Used in wireless networks to define the frequency used to transmit and receive.

A laser printing imaging process that can also be known as conditioning. This process gets the drum ready for use by applying a uniform voltage on the drum surface by using a primary/main corona or a conditioning roller.

A port that can provide power to charge and run an unpowered attached device such as a flash drive.

A Windows 8/8.1 sidebar item that, when displayed, provides quick access to a particular function, such as Search, Share Content, Start Screen, Devices, and Settings.

In a virtualization environment, a copy or backup of the virtual machine (VM) at a particular point in time used to revert the VM to that point in time.

A device that accepts cards that are inserted into the device in order to read data from the card or the chip on the card.

One or more motherboard chips that work with the processor to allow certain computer features, such as motherboard memory and capacity.

A program that locates clusters that are disassociated from the appropriate data file.

A Linux command that gives the file owner read, write, and execute permissions.

A Linux command that changes ownership.

An operating system supported by Google and Google partners that is used on laptops.

A type of subnet mask that does not have a classful boundary. CIDR is a method of allocating IP addresses based on the number of host addresses needed for a particular network.

A version of Server Message Block (SMB) that can provide access to shared network devices, files, and printers, especially in a mixed environment of MAC and Windows computers. SMB/CIFS use port 445.

A Windows command used to decrypt, modify, or copy an encrypted file.

(column address strobe [CAS] latency rating)