Set 38 Flashcards
(32 cards)
TCP/IP
(Transmission Control Protocol/Internet Protocol). A suite of communication protocols used to interconnect devices on the internet and local networks. It includes protocols like TCP, IP, UDP, ICMP, and others.
TCP/IP Services
Common services that run on the TCP/IP protocol suite, such as:
- HTTP/HTTPS – Web access
- FTP – File transfer
- SMTP – Email sending
- DNS – Domain name resolution
- DHCP – Dynamic IP address assignment
Tech Toolkit
A collection of tools used by IT professionals for troubleshooting and repair, which may include:
- Screwdrivers, cable testers, USB flash drives, multimeter
- Diagnostic software, bootable OS installers, antistatic wrist straps
Telecommunications Room
Also known as an IDF (Intermediate Distribution Frame), this is a dedicated room in a building where network devices like patch panels, switches, and routers are housed.
Telnet
A protocol used for remote command-line access over a network (TCP port 23). It’s largely deprecated due to lack of encryption and replaced by SSH.
Tera-
A metric prefix meaning trillion (10¹²).
Examples:
1 TB (terabyte) = 1,000,000,000,000 bytes
terminal (lowercase)
A text-based interface used to interact with the operating system, especially in Linux/Unix and macOS environments. Common tools: Bash, zsh, etc.
Terminal (macOS app)
A macOS application that provides access to the command line (Unix shell), allowing users to execute system commands and scripts.
Terminal Emulation
Software that mimics a hardware terminal within another system. Used for accessing remote systems or command-line interfaces, such as PuTTY or the Windows Command Prompt.
Test the Theory to Determine the Cause
Step 3 in the CompTIA A+ Troubleshooting Methodology. After identifying the problem and forming a hypothesis, you test the theory through diagnostics or changes to confirm the root cause.
Tethering
Sharing a mobile device’s cellular data connection with other devices via USB, Wi-Fi, or Bluetooth. Allows laptops or tablets to connect to the internet through a smartphone.
Theory of Probable Cause
An educated guess about the source of a problem based on symptoms and experience. This step helps narrow down potential issues during troubleshooting.
Thermal Compound (aka Thermal Paste/Grease)
A heat-conductive paste applied between a CPU and its heat sink to improve thermal transfer and cooling efficiency.
Thermal Pad
A pre-formed heat transfer material used as an alternative to thermal paste, often found on GPUs and some CPUs. Easier to apply but typically less efficient.
Thermal Paste
Same as thermal compound—a material applied between the CPU and heat sink to eliminate air gaps and improve heat dissipation.
Thermal Printer
A printer that uses heat to produce an image on special heat-sensitive paper. Commonly used for receipts, labels, and barcodes. No ink or toner required.
Thin Provisioning
A storage allocation method that allows you to allocate more virtual storage than the physical space available, assuming not all users will use their full allocation immediately.
This PC
A Windows File Explorer view that shows local drives, connected devices, and user folders like Documents, Pictures, and Downloads. Formerly known as “My Computer”.
Thread
The smallest sequence of programmed instructions managed independently by a scheduler. In CPUs, multiple threads allow for multitasking and parallel execution.
Throttling
The automatic reduction of a system’s performance (CPU, GPU, etc.) to avoid overheating or conserve power, often triggered by thermal or power thresholds.
Throw
In programming, “throw” is a command used to raise an exception or error. In projectors, “throw distance” refers to how far a projector must be from the screen to display an image of a certain size.
Thunderbolt
A high-speed hardware interface developed by Intel and Apple. It combines PCIe and DisplayPort into one connection and supports data, video, audio, and power transfer (versions: Thunderbolt 1/2/3/4).
Time and Language (Windows Setting)
A section in Windows Settings where users can adjust time zones, formats, and language preferences, including regional settings and keyboard layouts.
Time Machine
A macOS backup utility that automatically backs up your entire system, including system files, apps, music, photos, and documents. Enables easy restoration of data.
