Technology
Technology · sanalda.comWhat is Domain name?
A domain name is the human-readable name of an internet address. sanalda.com is an example.
Technology · sanalda.comWhat is DNS?
DNS is a distributed naming system that maps domain names to addresses on the internet.
Technology · sanalda.comWhat is Artificial intelligence?
Artificial intelligence is a field concerned with computer systems performing tasks such as learning, recognising patterns and supporting decisions.
Technology · sanalda.comWhat is Technology?
Technology is the use of knowledge, skills, methods, tools, materials and organized processes to meet human needs, solve problems, extend capabilities and transform the environment. It is not limited to phones, computers or machines: it includes every technical system that fulfils a purpose, from the wheel and writing to agriculture and medicine, and from production methods to software. The value of technology is judged not only by how new or powerful it is, but also by the benefit it provides to people and the environment, the risks it creates, its accessibility and how responsibly it is governed.
Technology · sanalda.comWhat is HEC code?
An HEC code is a Header Error Control field used in data communications to check for errors in the header of a transmission unit. In particular, it helps detect whether the header of an ATM (Asynchronous Transfer Mode) cell was corrupted during transmission and, under certain conditions, correct a single-bit error. HEC is sometimes incorrectly described online as if it were the same as a HEX code used for colors; HEC is an error-control mechanism, whereas HEX is hexadecimal number notation.
Technology · sanalda.comWhat is computer hardware?
Computer hardware comprises a computer’s physical parts, including its processor, memory, storage, motherboard, display and keyboard. Software specifies operations; hardware physically carries them out. Phones and servers combine the same basic functions in different designs.
Technology · sanalda.comWhat is an operating system?
An operating system is foundational software that lets applications use hardware resources in an organized, controlled way. It manages processor time, memory, files and communication with devices. Desktop computers, phones, servers and embedded devices use systems designed for different requirements.
Technology · sanalda.comWhat is a central processing unit (CPU)?
The CPU executes program instructions and performs general-purpose computation, including arithmetic, comparisons and moving data. It is important but does not determine total performance alone: RAM, storage, graphics hardware and software also influence results.
Technology · sanalda.comWhat is RAM?
RAM is fast working memory holding running programs and currently used data. Ordinary computer RAM is volatile: its contents do not survive a loss of power. It differs from an SSD or hard drive used to retain photographs and documents.
Technology · sanalda.comWhat is an SSD?
An SSD stores information in electronic memory rather than on moving magnetic platters. Most use NAND flash, retaining data without power. Operating systems, applications and documents can be stored on an SSD. Persistent storage is still vulnerable to hardware failure and accidental deletion.
Technology · sanalda.comWhat are a GPU and a graphics card?
A GPU is a graphics processing unit designed to perform many similar calculations in parallel. Besides rendering, it can accelerate video work and suitable scientific computations. A graphics card is the hardware board containing a GPU, memory, power components and connectors; the terms are not identical.
Technology · sanalda.comWhat is the internet?
The internet is the global collection of networks connected through shared communication protocols. It is neither a single computer nor one company’s system. Websites, email, video calls and other services operate over this infrastructure, so the internet and the web are different concepts.
Technology · sanalda.comWhat is a web browser?
A web browser opens websites and web applications and allows interaction with them. It requests content, processes HTML structure and CSS styling, and can execute JavaScript. A search engine is a service for finding information on the web, rather than the same thing as a browser.
Technology · sanalda.comWhat is HTTPS?
HTTPS is HTTP communication protected by TLS. It helps protect the confidentiality and integrity of data travelling between browser and server and authenticate the destination domain. It matters for sessions, forms and personal information, not only payment pages.
Technology · sanalda.comWhat is cloud computing?
Cloud computing provides resources such as servers, storage, networking and software over a network on demand. Physical hardware has not disappeared: resources run in data centres. Users can access them without purchasing every component themselves.
Technology · sanalda.comWhat is an API?
An API defines the rules under which software can access particular functions or information exposed by other software. It enables cooperation without knowing every internal detail. APIs are not limited to internet services: operating systems and programming libraries expose them too.
Technology · sanalda.comWhat is a database?
A database is an organized collection of information that can be stored and queried. A database management system is the software managing it. Databases help applications reliably handle product catalogues, reservations, accounts and inventory.
Technology · sanalda.comWhat is an algorithm?
An algorithm is a sequence of explicit steps for solving a problem or performing a task. It is independent of a particular programming language and can be implemented in several languages. A recipe offers an analogy, but computers require ambiguous instructions to become precise operations.
Technology · sanalda.comWhat is programming?
Programming creates software by translating a problem into operations a computer can execute. It includes understanding requirements, modelling data, testing and maintenance as well as writing code. Syntax matters, but solving the user’s problem is a broader task.
Technology · sanalda.comWhat is open-source software?
Open-source software is provided under a licence granting rights to use, modify and redistribute it, alongside access to source code. Code merely being visible online is insufficient. The licence establishes rights and obligations.
Technology · sanalda.comWhat is cybersecurity?
Cybersecurity comprises practices and processes protecting devices, networks, accounts and information from digital threats. It is more than installing antivirus software: human behaviour, access rules, updates, logging and recovery also matter.
Technology · sanalda.comWhat is encryption?
Encryption uses an algorithm and key to transform readable information into a form difficult for unauthorized parties to interpret. An authorized party with the appropriate key can decrypt it. It protects stored files, messages and network connections and is a technical operation distinct from choosing a strong password.
Technology · sanalda.comWhat is two-factor authentication?
Two-factor authentication uses two different kinds of evidence when accessing an account. A known password, a possessed device and a biometric characteristic represent different factor categories. Requesting a second password does not necessarily provide a different factor.
Technology · sanalda.comWhat is the Internet of Things (IoT)?
The Internet of Things connects devices that sense or act on the physical environment through networks. Systems involve sensing, computing, communication and, when needed, actuation. Smart meters, environmental monitoring and connected production equipment are different examples.
Technology · sanalda.comWhat is data backup?
Data backup creates and preserves separate copies for recovery after loss or corruption. Hardware failure, accidental deletion, ransomware and lost account access are different risks. A backup fulfils its purpose only when the required information can actually be restored.