FixTech Technology Glossary
Technology terms can be confusing, especially when the same problem can involve hardware, software, networking, security, or operating-system settings.
This FixTech glossary provides clear, practical definitions of common technology terms used throughout our troubleshooting guides.
Each definition explains what the term means, why it matters, and where it may appear in a real troubleshooting situation.
Use the glossary to understand an unfamiliar technical term, then follow the related FixTech guides for practical troubleshooting steps.
A
Adware
Adware is software that displays unwanted advertisements, sometimes by inserting ads into applications, browsers, or webpages.
Unexpected pop-ups, browser redirects, or advertising that appears outside the normal application can sometimes indicate unwanted adware.
Related FixTech topics: Android security, browser problems, malware, privacy.
Airplane Mode
Airplane Mode is a device setting that temporarily disables some wireless communications, such as cellular, Wi-Fi, and Bluetooth, depending on the device.
Turning Airplane Mode on and off can sometimes reset a device's wireless connections and is a basic troubleshooting step for connectivity problems.
Android
Android is a mobile operating system developed primarily by Google and used by smartphones, tablets, TVs, cars, and other devices.
Android devices can behave differently depending on the manufacturer, Android version, and customized software installed by the manufacturer.
API
An API (Application Programming Interface) is a set of rules that allows different software applications or services to communicate with each other.
APIs are commonly used by websites, mobile applications, cloud services, and AI tools to exchange information.
App Cache
An app cache is temporary data stored by an application to help it load information more quickly.
A corrupted or unusually large cache can sometimes contribute to application problems. Clearing an app's cache is different from clearing its data.
App Data
App data is information stored by an application, such as account settings, preferences, downloaded content, databases, and locally saved information.
Clearing app data can effectively reset an application and may remove locally stored information, so it should not be confused with clearing the cache.
B
Backup
A backup is a separate copy of important files or data that can be used if the original information is lost, damaged, deleted, or inaccessible.
Backups are important before performing troubleshooting that could modify system settings, reset a device, or delete files.
Bandwidth
Bandwidth describes the amount of data that a network connection can transfer over a given period.
Bandwidth is commonly measured in bits per second, such as Mbps or Gbps.
Higher bandwidth does not automatically mean lower latency or a better connection in every situation.
Bluetooth
Bluetooth is a short-range wireless technology used to connect devices such as headphones, keyboards, mice, speakers, cars, and smartphones.
Bluetooth problems can involve pairing, connection stability, audio routing, permissions, interference, or device compatibility.
Bluetooth Pairing
Bluetooth pairing is the process of establishing a relationship between two Bluetooth devices so they can communicate.
A device may be visible without successfully pairing, and a paired device may still fail to connect or route audio correctly.
Browser Cache
A browser cache is temporary storage used by a web browser to keep copies of certain webpage resources.
A corrupted or outdated cache can sometimes cause webpages to display incorrectly or behave unexpectedly.
C
Cache
A cache is temporary stored information designed to make future access faster.
Caches are used by operating systems, browsers, applications, processors, and cloud services.
Cache data can become outdated or corrupted, which is why clearing a cache is sometimes used as a troubleshooting step.
CAPTCHA
A CAPTCHA is a challenge designed to distinguish human users from automated software.
CAPTCHAs are commonly used to reduce automated abuse, spam, and suspicious login activity.
Cloud Storage
Cloud storage is a service that stores files on remote servers and makes them accessible through the internet.
Examples include services used for file backup, synchronization, collaboration, and sharing.
A cloud-storage problem may involve synchronization, account access, storage limits, network connectivity, or application settings.
CPU
CPU (Central Processing Unit) is the primary processor responsible for executing instructions and performing calculations in a computer or other device.
High CPU usage can be caused by applications, system processes, background tasks, updates, malware, or other software activity.
CPU Usage
CPU usage represents how much of the processor's available processing capacity is currently being used.
High CPU usage is not automatically a problem. The important question is which process is consuming the CPU and why.
Cookie
A cookie is a small piece of information that a website stores in a browser.
Cookies can be used for sessions, preferences, authentication, analytics, and other website functions.
D
DNS
DNS (Domain Name System) translates human-readable domain names such as example.com into IP addresses that computers use to locate servers.
DNS problems can cause websites to fail to load even when the device appears to have an internet connection.
DNS Cache
A DNS cache stores recently resolved domain-name information so a device or application does not need to perform the same DNS lookup repeatedly.
A stale or incorrect DNS cache can sometimes contribute to website or connectivity problems.
DNS Server
A DNS server resolves domain names into IP addresses and can also provide other DNS-related information.
Devices may use DNS servers provided by an internet service provider, a router, or a third-party DNS service.
Download
A download is the process of transferring data from a remote system to a local device.
Downloading a file is different from uploading a file, which transfers data from the local device to a remote system.
E
Encryption
Encryption converts readable information into a protected form that is intended to prevent unauthorized parties from understanding the data.
Encryption is widely used for websites, messaging, files, devices, Wi-Fi networks, and cloud services.
Ethernet
Ethernet is a wired networking technology commonly used to connect computers, routers, switches, and other network equipment.
A wired Ethernet connection can provide a more consistent connection than Wi-Fi in some environments.
EXE File
An EXE file is a Windows executable file that can contain instructions for a program to run.
Because executable files can run software, users should be cautious when opening EXE files obtained from unknown or untrusted sources.
F
Factory Reset
A factory reset restores a device or application to a default state and may remove user data, accounts, settings, and installed applications.
A factory reset should generally be considered a later troubleshooting option after less destructive methods have been attempted.
Firewall
A firewall is a security system that monitors and controls network traffic according to defined rules.
Firewalls can operate on individual devices, routers, servers, and corporate networks.
Firmware
Firmware is software embedded in a hardware device that helps control how the hardware operates.
Routers, smartphones, storage devices, printers, and many other devices use firmware.
FPS
FPS (frames per second) measures how many individual frames are displayed or rendered each second in video or games.
Higher FPS can produce smoother motion, although the result also depends on display refresh rate, input latency, and other factors.
G
GPU
GPU (Graphics Processing Unit) is a processor designed primarily to handle graphics and highly parallel computational workloads.
GPUs are used for gaming, video processing, 3D graphics, AI workloads, and other demanding tasks.
GHz
GHz (gigahertz) is a unit equal to one billion cycles per second.
Processor frequency is commonly expressed in GHz, but clock speed alone does not determine overall CPU performance.
Gigabyte
A gigabyte (GB) is a unit commonly used to describe digital storage and memory capacity.
Storage manufacturers and operating systems may use different conventions when calculating storage capacity, which can cause reported capacity to differ slightly.
H
HTTPS
HTTPS (Hypertext Transfer Protocol Secure) is the encrypted version of HTTP used to protect communication between a browser and a website.
HTTPS helps protect data while it travels between the user's browser and the website server.
Hotspot
A hotspot allows a device, usually a smartphone, to share its internet connection with other devices.
A hotspot may use Wi-Fi, Bluetooth, or USB depending on the device and configuration.
I
IP Address
An IP address is a numerical address used to identify a device or network interface on an IP network.
IP addresses can be private or public and may use IPv4 or IPv6.
IPv4
IPv4 (Internet Protocol version 4) is a widely used networking protocol that uses 32-bit IP addresses.
An IPv4 address is commonly written as four decimal numbers separated by periods.
IPv6
IPv6 (Internet Protocol version 6) is a newer version of the Internet Protocol that uses much larger addresses than IPv4.
IPv6 was developed partly to address the limited number of available IPv4 addresses.
L
LAN
LAN (Local Area Network) is a network connecting devices within a limited area such as a home, office, school, or building.
A LAN can use Ethernet, Wi-Fi, or other networking technologies.
Latency
Latency is the time required for data to travel between two points in a network.
High latency can cause noticeable delays in gaming, video calls, remote desktop sessions, and interactive applications even when download speeds are high.
Local Storage
Local storage refers to data stored directly on a device rather than exclusively on a remote server.
Examples include files stored on a computer's SSD or a smartphone's internal storage.
M
Malware
Malware is a broad term for malicious software designed to perform unwanted or harmful actions.
Malware includes categories such as viruses, trojans, ransomware, spyware, and other malicious programs.
Mbps
Mbps (megabits per second) is a measurement of data-transfer speed.
Internet providers commonly use Mbps to describe download and upload speeds.
Mbps should not be confused with MB/s, which measures megabytes per second.
MB/s
MB/s (megabytes per second) measures how many megabytes of data can be transferred per second.
Because one byte contains eight bits, MB/s and Mbps represent different quantities.
Memory
In everyday PC terminology, memory usually refers to RAM, which provides temporary working space for running programs and operating-system processes.
Memory is different from permanent storage such as an SSD or HDD.
Metadata
Metadata is information that describes other data.
Examples include a file's creation date, modification date, author, dimensions, location, or other properties.
N
NAT
NAT (Network Address Translation) allows multiple devices on a private network to share a public IP address when communicating with the internet.
NAT is commonly performed by home and business routers.
Network Adapter
A network adapter is hardware or software that allows a device to communicate over a network.
Examples include Wi-Fi adapters and Ethernet network interfaces.
Network Latency
Network latency is the delay involved in transmitting data across a network.
Latency can be affected by distance, routing, congestion, wireless interference, network equipment, and the destination server.
O
Operating System
An operating system (OS) is the core software that manages a device's hardware and provides services for applications.
Examples include Windows, Android, macOS, Linux, and iOS.
OTA Update
OTA (Over-the-Air) update is a software or firmware update delivered directly to a device through a network connection rather than requiring a physical installation medium.
Smartphones commonly receive operating-system and security updates through OTA mechanisms.
P
Packet Loss
Packet loss occurs when packets of data fail to reach their intended destination.
Packet loss can cause slow or unstable connections, poor-quality calls, lag in games, interrupted downloads, and other network problems.
Ping
Ping is a network diagnostic tool and measurement used to determine whether a destination can be reached and how long a round trip takes.
Ping results are commonly expressed in milliseconds.
Phishing
Phishing is a form of social engineering in which an attacker attempts to trick someone into revealing information, installing malicious software, transferring money, or taking another harmful action.
Phishing messages can appear through email, text messages, websites, social media, or other communication channels.
Proxy
A proxy server acts as an intermediary between a device and another network service.
Depending on its configuration, a proxy can affect traffic routing, filtering, authentication, privacy, and access to online resources.
R
RAM
RAM (Random Access Memory) is temporary working memory used by a device to hold information that active applications and the operating system need.
More RAM can help a device handle multiple applications and workloads, but RAM capacity alone does not determine overall system performance.
Refresh Rate
Refresh rate is the number of times a display updates its image each second.
It is measured in hertz (Hz). A 60 Hz display refreshes up to 60 times per second, while a 120 Hz display can refresh up to 120 times per second.
Router
A router connects networks and directs network traffic between them.
In a typical home, the router may provide internet access, Wi-Fi, local networking, DHCP, NAT, and firewall functions.
S
Safe Mode
Safe Mode is a diagnostic operating mode that starts a system with a limited set of software and drivers.
Safe Mode can help determine whether a third-party application, driver, or startup component is contributing to a problem.
Screenshot
A screenshot is a captured image of what is displayed on a device's screen.
Screenshots are often useful when documenting errors, settings, or unexpected behavior.
SSD
SSD (Solid-State Drive) is a storage device that uses flash memory rather than spinning magnetic disks.
SSDs generally provide faster access and lower latency than traditional hard disk drives.
SSID
SSID (Service Set Identifier) is the name used to identify a Wi-Fi network.
The Wi-Fi network name displayed on a phone or computer is normally its SSID.
SSL/TLS
TLS (Transport Layer Security) is a cryptographic protocol used to protect network communications.
The term SSL is still commonly used informally, although modern secure web connections generally use TLS rather than the older SSL protocols.
Storage
Storage is persistent space used to retain files, applications, operating-system data, and other information when a device is powered off.
Common storage technologies include SSDs, HDDs, flash storage, memory cards, and cloud storage.
T
TCP
TCP (Transmission Control Protocol) is a network protocol designed to provide reliable, ordered delivery of data between applications.
TCP is widely used for web traffic, email, file transfers, and many other internet services.
TPM
TPM (Trusted Platform Module) is a security component that can provide hardware-based security functions such as key protection and device integrity measurements.
Modern Windows systems may use TPM features as part of security and authentication requirements.
Troubleshooting
Troubleshooting is the systematic process of identifying the cause of a technical problem and applying appropriate corrective steps.
A good troubleshooting process normally begins with simple, low-risk checks before moving to more advanced interventions.
U
Upload
An upload is the process of transferring data from a local device to a remote computer, server, website, or cloud service.
Uploading a file is the opposite direction of downloading a file.
USB
USB (Universal Serial Bus) is a standard used to connect devices and transfer data and power.
USB is used for peripherals, storage devices, smartphones, chargers, keyboards, mice, and many other devices.
V
VPN
VPN (Virtual Private Network) creates an encrypted connection between a device and a VPN service or network endpoint.
VPNs can be used for privacy, secure remote access, network routing, and accessing resources available through a particular network.
A VPN does not make a user completely anonymous or automatically protect against every online threat.
Virtual Memory
Virtual memory is a memory-management technique in which an operating system uses storage as an extension of physical RAM.
Because storage is generally slower than RAM, heavy reliance on virtual memory can contribute to slower performance when available physical memory is insufficient.
Virus
A computer virus is a type of malicious software capable of replicating by attaching itself to other files or programs.
The term "virus" is often incorrectly used to describe all malware, but malware is the broader category.
W
Wi-Fi
Wi-Fi is a wireless networking technology that allows compatible devices to communicate over a local network.
Wi-Fi performance can be affected by distance, interference, channel congestion, router configuration, device hardware, and network conditions.
Wi-Fi Channel
A Wi-Fi channel is a portion of the radio spectrum used by a wireless network.
Nearby networks using overlapping or congested channels can contribute to wireless interference and reduced performance.
Windows
Windows is a family of operating systems developed by Microsoft for personal computers and other devices.
FixTech covers practical Windows troubleshooting, including performance, storage, networking, updates, applications, security, Bluetooth, and system problems.
Windows Update
Windows Update is Microsoft's system for delivering Windows updates, including security fixes, bug fixes, drivers, and feature updates.
Update problems can involve downloads, installation failures, compatibility, services, storage, or system configuration.
X
XML Sitemap
An XML sitemap is a file that provides search engines with information about URLs that a website considers important for discovery and crawling.
A sitemap can help search engines discover pages, although submitting a sitemap does not guarantee indexing or ranking.
Z
Zero-Day Vulnerability
A zero-day vulnerability is a security vulnerability that is unknown to the vendor or has not yet received a security fix at the time it is being exploited or disclosed.
Zero-day vulnerabilities can present significant security risks because defensive updates may not yet be available.
How to Use This Glossary
If you encounter an unfamiliar technical term while reading a FixTech article, use this glossary to understand its basic meaning and then return to the relevant troubleshooting guide for practical instructions.
Technical terms can have different implications depending on the device, operating system, application, network, or version involved. Always follow the context provided in the individual FixTech article.
About FixTech
FixTech is an independent technology troubleshooting publication focused on practical solutions for Android, Windows, AI tools, cybersecurity, Wi-Fi, Bluetooth, cloud storage, software, and everyday technology problems.
Our goal is to explain technical problems clearly and provide practical steps that readers can understand and apply safely.
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