Knowledge Base
IT Glossary
98+ terms covering computer repair, networking, cybersecurity, and IT management — explained in plain English.
A
- Access Point
- A device that creates a wireless local area network (WLAN), allowing Wi-Fi-enabled devices to connect to a wired network.NetworkingNetwork Setup Services
- Active Directory
- A Microsoft directory service used by businesses to manage user accounts, permissions, and network resources across an organization.IT ManagementSmall Business IT
- Asset Management
- The systematic process of tracking, managing, and maintaining an organization's IT hardware and software assets throughout their lifecycle.IT ManagementSmall Business IT
B
- Backup
- A copy of data stored separately from the original so it can be restored in case of data loss due to hardware failure, ransomware, or accidental deletion.Data & StorageData Recovery Services
- Bandwidth
- The maximum rate of data transfer across a network path, typically measured in megabits per second (Mbps) or gigabits per second (Gbps).Networking
- BIOS
- Basic Input/Output System — firmware that initializes hardware during startup and provides runtime services for operating systems and programs.HardwareComputer Repair Services
- Blue Screen of Death (BSOD)
- A critical Windows error screen indicating a system crash caused by hardware failures, driver issues, or software conflicts.SoftwareComputer Repair Services
- Bootloader
- A small program that runs when a computer starts, responsible for loading the operating system into memory.Software
- Brute Force Attack
- A trial-and-error method used by attackers to decode passwords or encryption keys by systematically trying every possible combination until the correct one is found.Cybersecurity
- Business Continuity
- A proactive plan and set of procedures that ensures critical business functions can continue during and after a disaster, including IT systems and data.IT ManagementSmall Business IT
C
- Chipset
- A set of electronic components on the motherboard that manages data flow between the CPU, memory, storage, and peripherals.Hardware
- Cloud Storage
- A model where data is stored on remote servers managed by a provider and accessed over the internet, offering scalability and remote access.Data & Storage
- CMOS Battery
- A small battery on the motherboard that powers the BIOS/UEFI firmware and maintains system clock and settings when the computer is turned off.HardwareComputer Repair Services
- Colocation
- A data center facility where businesses rent space to house their own servers and networking equipment while the provider supplies power, cooling, and physical security.CloudData Center Management
- Containerization
- A lightweight virtualization method that packages an application and its dependencies together, enabling consistent operation across different environments.Software
- CPU
- Central Processing Unit — the primary component of a computer that performs most of the processing. Often called the 'brain' of the computer.HardwareCustom PC Builds
D
- Data Recovery
- The process of retrieving lost, corrupted, accidentally deleted, or otherwise inaccessible data from storage devices.Data & StorageData Recovery Services
- Data Sanitization
- The process of deliberately and permanently destroying all data on a storage device, ensuring it cannot be recovered, used before disposing of old hardware.Data & Storage
- DDoS Attack
- Distributed Denial of Service — an attack that floods a target server or network with massive traffic from multiple sources, making it unavailable to legitimate users.CybersecurityCybersecurity Services
- Deduplication
- A data compression technique that eliminates duplicate copies of data, reducing storage requirements and improving backup efficiency.Data & Storage
- DHCP
- Dynamic Host Configuration Protocol — automatically assigns IP addresses and other network settings to devices on a network.NetworkingNetwork Setup Services
- Disaster Recovery
- A set of policies, tools, and procedures focused on restoring IT systems and data access after a natural disaster, cyberattack, or equipment failure.IT ManagementData Recovery Services
- Disk Defragmentation
- The process of reorganizing fragmented data on a hard drive so files are stored in contiguous sections, improving read/write performance.Software
- Disk Imaging
- Creating an exact, sector-by-sector copy of a hard drive, including the operating system, settings, and all files, used for backup and recovery.Data & StorageData Recovery Services
- DNS
- Domain Name System — translates human-readable domain names (like google.com) into IP addresses that computers use to communicate.NetworkingNetwork Setup Services
- Driver
- Software that allows the operating system to communicate with hardware devices like printers, graphics cards, and network adapters.SoftwareComputer Repair Services
E
- ECC Memory
- Error-Correcting Code memory — a type of RAM that detects and corrects common data corruption, critical for servers and workstations.Hardware
- Encryption
- The process of converting data into a coded format that can only be read by someone with the correct decryption key, protecting sensitive information.CybersecurityCybersecurity Services
- Endpoint Protection
- Security solutions that protect individual devices (endpoints) like laptops, desktops, and servers from cyber threats.CybersecuritySmall Business IT
- Ethernet
- A wired networking technology that connects devices in a local area network (LAN) using cables, providing fast and reliable connectivity.NetworkingNetwork Setup Services
F
- File System
- The method an operating system uses to organize and store files on a storage device. Common types include NTFS (Windows), APFS (macOS), and ext4 (Linux).Data & Storage
- Firewall
- A network security system that monitors and controls incoming and outgoing traffic based on predetermined security rules.CybersecurityCybersecurity Services
- Firmware
- Permanent software programmed into a hardware device's read-only memory, providing low-level control for the device.Software
G
- GPU
- Graphics Processing Unit — a specialized processor designed to accelerate rendering images, video, and animations.HardwareCustom PC Builds
H
- HDD
- Hard Disk Drive — a traditional storage device that uses spinning magnetic platters to read and write data.HardwareData Recovery Services
- Heat Sink
- A passive cooling component that absorbs and dissipates heat from electronic components, typically the CPU.Hardware
- Help Desk
- A centralized point of contact for IT support, handling user issues like software problems, password resets, and hardware troubleshooting.IT ManagementIT Support Services
- Hybrid Cloud
- A computing environment that combines on-premises infrastructure with public and private cloud services, allowing data and applications to move between them.CloudData Center Management
I
- IaaS
- Infrastructure as a Service — a cloud computing model that provides virtualized computing resources (servers, storage, networking) over the internet on a pay-as-you-go basis.Cloud
- Incremental Backup
- A backup method that only saves data that has changed since the last backup, reducing storage space and backup time compared to full backups.Data & Storage
- Intrusion Detection System (IDS)
- A system that monitors network traffic for suspicious activity and known threats, alerting administrators to potential security breaches.CybersecurityCybersecurity Services
- IP Address
- A unique numerical label assigned to every device connected to a network, used for identification and communication.NetworkingNetwork Setup Services
K
- Kernel Panic
- A macOS/Linux equivalent of a BSOD — a critical system error where the operating system detects a fatal internal error.SoftwareMacBook Repair in Ashburn
L
- Latency
- The delay between sending a request and receiving a response over a network, measured in milliseconds (ms).Networking
- Load Balancer
- A device or software that distributes incoming network traffic across multiple servers to ensure no single server becomes overwhelmed, improving reliability and performance.CloudData Center Management
- Logic Board
- The main circuit board (motherboard) in Apple computers that houses the CPU, RAM, and other critical components.HardwareMacBook Repair in Ashburn
M
- M.2
- A compact form factor for SSDs and other expansion cards that connects directly to the motherboard, enabling faster speeds and smaller builds.Hardware
- Malware
- Malicious software designed to harm, exploit, or otherwise compromise a computer system. Includes viruses, worms, trojans, and ransomware.CybersecurityCybersecurity Services
- Managed IT Services
- Outsourced IT support where a provider proactively monitors, manages, and maintains a business's technology infrastructure for a fixed monthly fee.IT ManagementManaged IT Services
- Mesh Network
- A network topology where devices (nodes) connect directly and dynamically to as many other nodes as possible, providing reliable Wi-Fi coverage across large areas.NetworkingNetwork Setup Services
- MFA
- Multi-Factor Authentication — an enhanced security method requiring two or more verification factors (password, biometric, security token) to access an account or system.Cybersecurity
- Motherboard
- The main printed circuit board in a computer that connects all components, including the CPU, memory, and expansion cards.HardwareComputer Repair Services
N
- NAS
- Network Attached Storage — a dedicated file storage device connected to a network that allows multiple users and devices to access and share data centrally.Data & StorageSmall Business IT
- NAT
- Network Address Translation — a method of remapping IP addresses to allow multiple devices on a private network to share a single public IP address.Networking
- NVMe
- Non-Volatile Memory Express — a high-speed interface protocol for SSDs that connects through the PCIe bus for significantly faster data transfer.HardwareCustom PC Builds
O
- Onboarding (IT)
- The process of setting up technology accounts, devices, software, and network access for new employees joining an organization.IT ManagementIT Support Services
- Open Source
- Software whose source code is publicly available for anyone to inspect, modify, and distribute, promoting collaboration and transparency.Software
- Operating System (OS)
- System software that manages hardware resources and provides services for applications. Examples include Windows, macOS, and Linux.SoftwareIT Support Services
P
- PaaS
- Platform as a Service — a cloud computing model that provides a platform for developers to build, test, and deploy applications without managing underlying infrastructure.Cloud
- Patch Management
- The process of distributing and applying software updates (patches) to fix vulnerabilities, bugs, and improve performance across an organization's systems.IT ManagementSmall Business IT
- PCIe
- Peripheral Component Interconnect Express — a high-speed serial expansion bus standard used to connect hardware devices like GPUs, SSDs, and network cards to a motherboard.Hardware
- Penetration Testing
- A simulated cyberattack performed by security professionals to identify vulnerabilities in a system, network, or application before malicious hackers can exploit them.Cybersecurity
- Phishing
- A cyberattack that uses deceptive emails, messages, or websites to trick people into revealing sensitive information like passwords or credit card numbers.CybersecurityCybersecurity Services
- PoE
- Power over Ethernet — a technology that delivers electrical power along with data over standard Ethernet cables, commonly used for security cameras and access points.Networking
- Power Supply Unit (PSU)
- A component that converts AC electrical power from the wall outlet into regulated DC power for the computer's internal components.HardwareCustom PC Builds
Q
- QoS
- Quality of Service — a set of technologies that manage network traffic by prioritizing certain types of data (like video calls) to ensure consistent performance.NetworkingNetwork Setup Services
R
- RAID
- Redundant Array of Independent Disks — a data storage technology that combines multiple physical drives into one or more logical units for redundancy or performance.Data & StorageData Center Management
- RAM
- Random Access Memory — volatile memory that temporarily stores data your computer is actively using for quick access.HardwareComputer Repair Services
- Ransomware
- A type of malware that encrypts a victim's files and demands payment (ransom) to restore access to the data.CybersecurityCybersecurity Services
- Registry
- A hierarchical database in Windows that stores configuration settings and options for the operating system, hardware, and installed software.Software
- Remote Desktop
- Technology that allows a technician or user to access and control a computer from a different location over a network connection.IT ManagementIT Support Services
- RMM
- Remote Monitoring and Management — software that allows IT providers to remotely monitor, manage, and maintain client networks and endpoints proactively.IT ManagementManaged IT Services
- Rootkit
- A collection of malicious tools that provides unauthorized administrator-level access to a computer while actively hiding its presence from detection.Cybersecurity
- Router
- A networking device that forwards data packets between computer networks, directing traffic between your local network and the internet.NetworkingNetwork Setup Services
S
- SaaS
- Software as a Service — a cloud-based software delivery model where applications are hosted by a provider and accessed via the internet, eliminating local installation.Cloud
- Safe Mode
- A diagnostic startup mode in Windows that loads only essential drivers and services, used to troubleshoot system problems.SoftwareComputer Repair Services
- SAN
- Storage Area Network — a high-speed network that provides access to consolidated block-level data storage, typically used in enterprise and data center environments.Data & StorageData Center Management
- SLA
- Service Level Agreement — a contract defining the expected level of service between an IT provider and client, including response times and uptime guarantees.IT ManagementManaged IT Services
- Social Engineering
- Psychological manipulation tactics used by attackers to trick people into making security mistakes or giving away sensitive information.Cybersecurity
- Spyware
- Software that secretly monitors and collects user activity data, such as keystrokes, browsing habits, and login credentials, without the user's knowledge.CybersecurityCybersecurity Services
- SSD
- Solid State Drive — a storage device that uses flash memory to deliver faster read/write speeds and better durability than traditional hard drives.HardwareData Recovery Services
- SSL/TLS
- Secure Sockets Layer / Transport Layer Security — cryptographic protocols that provide secure, encrypted communication over a computer network, indicated by HTTPS in browsers.NetworkingCybersecurity Services
- Subnet
- A logical subdivision of an IP network that segments a larger network into smaller, more manageable sections for improved performance and security.Networking
- Switch
- A networking device that connects devices within a local network and forwards data only to the intended recipient device.NetworkingNetwork Setup Services
- System Restore
- A Windows feature that lets you revert your computer's system files and settings to an earlier point in time without affecting personal files.Software
T
- TCP/IP
- Transmission Control Protocol/Internet Protocol — the foundational communication protocols of the internet that govern how data is packaged, addressed, transmitted, and received.Networking
- Thermal Paste
- A thermally conductive compound applied between a CPU/GPU and its heatsink to improve heat transfer and prevent overheating.Hardware
- Ticketing System
- Software used by IT support teams to track, manage, and resolve user-reported issues and service requests efficiently.IT ManagementIT Support Services
- Trojan Horse
- A type of malware disguised as legitimate software that, once installed, gives attackers unauthorized access to the infected system.Cybersecurity
- Two-Factor Authentication (2FA)
- A security process requiring two different forms of identification (like a password plus a phone code) before granting access to an account.Cybersecurity
U
- UEFI
- Unified Extensible Firmware Interface — the modern replacement for BIOS that provides a graphical interface, faster boot times, and support for larger hard drives.Hardware
- Uptime
- The percentage of time a system, server, or network is operational and available. Enterprise-grade SLAs typically guarantee 99.9% or higher uptime.IT ManagementData Center Management
V
- Virtual Machine (VM)
- A software-based emulation of a physical computer that runs an operating system and applications as if it were a separate machine.SoftwareIT Support Services
- Virtualization
- Technology that creates virtual versions of hardware, operating systems, or network resources, allowing multiple systems to run on a single physical machine.IT ManagementData Center Management
- VLAN
- Virtual Local Area Network — a logical grouping of devices on a network that can communicate as if they were on the same physical network, improving security and traffic management.Networking
- VPN
- Virtual Private Network — encrypts your internet connection and routes it through a secure server, protecting your data and privacy online.NetworkingCybersecurity Services
W
- Wi-Fi 6 (802.11ax)
- The latest generation of Wi-Fi technology offering faster speeds, better performance in crowded areas, and improved battery life for connected devices.NetworkingNetwork Setup Services
Z
- Zero-Day Exploit
- A cyberattack that targets a previously unknown software vulnerability before the developer has released a fix or patch.CybersecurityCybersecurity Services
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Computer RepairHardware diagnostics, upgrades & fixesData RecoveryRecover lost files from any storage deviceNetwork SetupWi-Fi, Ethernet & business networkingCybersecurityMalware removal, firewalls & protectionCustom PC BuildsTailored desktops for work or gamingIT SupportOngoing tech support & troubleshootingSmall Business ITComplete IT solutions for SMBsData Center ManagementServer, storage & infrastructure managementMacBook RepairApple laptop repair in Ashburn, VA