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Distributed systems

It is a collection of autonomous computer.Each and every node has different server.If one server is affected it won't reflect to the other server.

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It is a collectection of various computers communicated and coordinated by passing message

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Distributed Systems:

It is a group of Components which is interconnected to each other in order to share resource and computational powers.

Challenges :

Security

Heterogeneity

Consistency

Transparency

Scalability

Failure handling

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A distributed system is simply any environment where multiple computers or devices are working on a variety of tasks and components all spread across a network.

Then we are discussing about architecture model and architecture patterns

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What is distributed systems

Challenge of distributed systems

System model of distributed systems

Type of physical model

Architectural patterns

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Distributed system:

It is a collection of different computer to communicate and coordinate among them by sharing messages.

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Distributed system:

A distributed system is a collection of autonomous computers. It has many nodes and each nodes will have their own server so if one server is failed it will not affect the other servers.

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distributed system is an essential type of operating system. Distributed systems use many central processors to serve multiple real-time applications and users. As a result, data processing jobs are distributed between the processors.

It connects multiple computers via a single communication channel. Furthermore, each of these systems has its own processor and memory. Additionally, these CPUs communicate via high-speed buses or telephone lines. Individual systems that communicate via a single channel are regarded as a single entity.

Nishaanth

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  PrithiviA distributed system is a network of independent computers that work together to achieve a common goal, sharing tasks, resources, and information across multiple nodes. 

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  PrithiviA distributed system is a network of independent computers that work together to achieve a common goal, sharing tasks, resources, and information across multiple nodes. 

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What is distributed system?

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A distributed system is a collection of computer programs that utilize computational resources across multiple, separate computation nodes to achieve a common, shared goal. Also known as distributed computing or distributed databases, it relies on separate nodes to communicate and synchronize over a common network.

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1.Distributed system

It is a collection of independent system which are interconnected.

2.Challenges in distributed system

-hetrogenity

-openness

-security

-scalability

-failure handling

-concurrency

-transparency

3.system model

#Physical model

#architectural model

#fundamental model

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Distributed systems

A distributed system is simply any environment where multiple computers or devices are working on a variety of tasks and components, all spread across a network.

Challenges in distributed systems

1) Heterogeneity

2) openness

3) security

4) scalability

5) failure handling

6) concurrency

7) Transperency

Mobile code -> middle ware

"Concurrency -> one after another "

System model

1) physical model

2) architectural system

3) fundamental model

4) early distributed systems

3 types of physical model

1) Early ds

2) internet scale ds

3) contemporary ds

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It is distributed systems

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What is distributed System?

Distributed system is a collection of independent components located on different machines that share messages with each other in order to achieve common goals.

Challenges of Distributed System

1.Hetrogenity

2.openness

3.security

4.scalability

5.Failure handling

6.concurrency

7.Tansperancy

System Models of diatributed System

1.Physical Model

2.Architectural model

3.Fundamental model

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collections of interconnected computers that work together to achieve a common goal. They share resources and distribute processing tasks among the networked nodes, enhancing scalability, reliability, and performance in handling complex tasks.

challenges of distributed systems

architectural model

architectural patterns

going well

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The World Wide Web is an information system that enables content sharing over the Internet through user-friendly ways meant to appeal to users beyond IT specialists and hobbyists. Wikipedia

# data[].attributes.body
WWW can be defined as the collection of different websites around the world, containing different information shared via local servers(or computers).

# data[].attributes.body
Distributed system is a system which is a big and good system and it is distributed.

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The World Wide Web is like a huge digital space filled with web pages. When you use the internet, your computer (client) asks other computers (servers) for information, like opening a book. Web pages are like pages in that book, and they're all connected, so you can jump from one page to another easily using links.

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1. The World Wide Web is an evolving system for publishing and accessing resources and services across the Internet. Through commonly available web browsers, users retrieve and view documents of many types, listen to audio streams and view video streams, and interact with an unlimited set of services.

2. The Web began life at the European centre for nuclear research (CERN), Switzerland, in 1989 as a vehicle for exchanging documents between a community of physicists connected by the Internet [Berners-Lee 1999].

3. A key feature of the Web is that it provides a hypertext structure among the documents that it stores, reflecting the users’ requirement to organize their knowledge. This means that documents contain links (or hyperlinks) – references to other documents and resources that are also stored in the Web. It is fundamental to the user’s experience of the Web that when they encounter a given image or piece of text within a document, this will frequently be accompanied by links to related documents and other resources.

4. The structure of links can be arbitrarily complex and the set of resources that can be added is unlimited – the ‘web’ of links is indeed world-wide. Bush [1945] conceived of hypertextual structures over 50 years ago; it was with the development of the Internet that this idea could be manifested on a world-wide scale.

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The World Wide Web is abbreviated as WWW and is commonly known as the web. The WWW was initiated by CERN (European library for Nuclear Research) in 1989.

WWW can be defined as the collection of different websites around the world, containing different information shared via local servers(or computers).

Working of WWW:

The World Wide Web is based on several different technologies: Web browsers, Hypertext Markup Language (HTML) and Hypertext Transfer Protocol (HTTP).

Features of WWW:

HyperText Information System

Cross-Platform

Distributed

Open Standards and Open Source

Uses Web Browsers to provide a single interface for many services

Dynamic, Interactive and Evolving.

“Web 2.0”

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www is the part of internet contains websites and webpages.It allows to share content over the internet .www is also called as nomenclature

It is made up of three components:

1.URL(Uniform Resource Locator)

2.HTTP(HyperText Transfer Protocol)

3.HTML(Hyper Text Markup Language)

Uses of www:

1.communication

2.calls

3.Getting the information of topic,what we want

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WWW can be defined as the collection of different websites around the world, containing different information shared via local server.

The World Wide Web is based on several different technologies: Web browsers, Hypertext Markup Language (HTML) and Hypertext Transfer Protocol (HTTP).

Components of the Web: There are 3 components of the web:

Uniform Resource Locator (URL): serves as a system for resources on the web.

HyperText Transfer Protocol (HTTP): specifies communication of browser and server.

Hyper Text Markup Language (HTML): defines the structure, organisation and content of a webpage.

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The World Wide Web (WWW) is a system that allows users to share content over the internet. It is also called as nomenclature

The World Wide Web is made up of three components:

1.Uniform Resource Locator (URL)

2.HyperText Transfer Protocol (HTTP)

3.Hyper Text Markup Language (HTML)

Uses of www:

1.communication

2.calls

3.getting the information what we want

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Class over mam

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The World Wide Web [invented by Berners-Lee 1991] is an evolving system for

publishing and accessing resources and services across the Internet. Through commonly available web browsers, users retrieve and view documents of many types, listen to audio streams and view video streams, and interact with an unlimited set of services.

Its operation is based on communication standards and document or content standards that are freely published and widely implemented.

The Web is open with respect to the types of resource that can be published

and shared on it. At its simplest, a resource on the Web is a web page or some other type of content that can be presented to the user, such as media files and documents in PDF. If somebody invents, say, a new image-storage format, then

images in this format can immediately be published on the Web. Users require a means of viewing images in this new format, but browsers are designed to accommodate new content-presentation functionality in the form of ‘helper’ applications and ‘plug-ins’.

The Web is based on three main standard technological components:

• the HyperText Markup Language (HTML), a language for specifying the contents

and layout of pages as they are displayed by web browsers;

• Uniform Resource Locators (URLs), also known as Uniform Resource Identifiers

(URIs), which identify documents and other resources stored as part of the Web;

• a client-server system architecture, with standard rules for interaction (the

HyperText Transfer Protocol – HTTP) by which browsers and other clients fetch

documents and other resources from web servers.

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"www" stands for "World Wide Web," which is a system of interlinked hypertext documents accessed via the internet. It's commonly used as a prefix in website URLs to indicate a web address.

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The World Wide Web (WWW or simply the Web) is an information system that enables content sharing over the Internet through user-friendly ways meant to appeal to users beyond IT specialists and hobbyists.

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Working of WWW:
The World Wide Web is based on several different technologies: Web browsers, Hypertext Markup Language (HTML) and Hypertext Transfer Protocol (HTTP).

A Web browser is used to access web pages. Web browsers can be defined as programs which display text, data, pictures, animation and video on the Internet. Hyperlinked resources on the World Wide Web can be accessed using software interfaces provided by Web browsers. Initially, Web browsers were used only for surfing the Web but now they have become more universal. Web browsers can be used for several tasks including conducting searches, mailing, transferring files, and much more. Some of the commonly used browsers are Internet Explorer, Opera Mini, and Google Chrome.

Features of WWW:

HyperText Information System

Cross-Platform

Distributed

Open Standards and Open Source

Uses Web Browsers to provide a single interface for many services

Dynamic, Interactive and Evolving.

“Web 2.0”

# data[].attributes.body
The Web is based on three main standard technological components:

• the HyperText Markup Language (HTML), a language for specifying the contents and layout of pages as they are displayed by web browsers;

• Uniform Resource Locators (URLs), also known as Uniform Resource Identifiers (URIs), which identify documents and other resources stored as part of the Web;

• a client-server system architecture, with standard rules for interaction (the HyperText Transfer Protocol – HTTP) by which browsers and other clients fetch documents and other resources from web servers.