Protocols and standards on the web: Difference between revisions
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Protocols are important because they: | Protocols are important because they: | ||
* Ensure data integrity (overall completeness, accuracy and consistency of data<ref>https://www.techopedia.com/definition/27858/data-integrity-networking</ref>) | * Ensure '''data integrity''' (overall completeness, accuracy and consistency of data<ref>https://www.techopedia.com/definition/27858/data-integrity-networking</ref>) | ||
* Regulate flow control (In data communications, flow control is the process of managing the rate of data transmission between two nodes to prevent a fast sender from overwhelming a slow receiver.<ref>https://en.wikipedia.org/wiki/Flow_control_(data)</ref>) | * Regulate '''flow control''' (In data communications, flow control is the process of managing the rate of data transmission between two nodes to prevent a fast sender from overwhelming a slow receiver.<ref>https://en.wikipedia.org/wiki/Flow_control_(data)</ref>) | ||
* Manage deadlock (A condition that occurs when two processes are each waiting for the other to complete before proceeding <ref>https://www.webopedia.com/TERM/D/deadlock.html</ref>) | * Manage '''deadlock''' (A condition that occurs when two processes are each waiting for the other to complete before proceeding <ref>https://www.webopedia.com/TERM/D/deadlock.html</ref>) | ||
* Manage congestion (Network congestion in data networking is the reduced quality of service that occurs when a network node or link is carrying more data than it can handle.<ref>https://en.wikipedia.org/wiki/Network_congestion</ref>) | * Manage '''congestion''' (Network congestion in data networking is the reduced quality of service that occurs when a network node or link is carrying more data than it can handle.<ref>https://en.wikipedia.org/wiki/Network_congestion</ref>) | ||
* Manage error checking (techniques that enable reliable delivery of digital data over unreliable communication channels.<ref>https://en.wikipedia.org/wiki/Error_detection_and_correction</ref>) | * Manage '''error checking''' (techniques that enable reliable delivery of digital data over unreliable communication channels.<ref>https://en.wikipedia.org/wiki/Error_detection_and_correction</ref>) | ||
== Why standards are important == | == Why standards are important == | ||
Revision as of 15:16, 12 November 2017
In telecommunications, a communication protocol is a system of rules that allows two or more entities of a communications system to transmit information via any kind of variation of a physical quantity. These are the rules or standard that defines the syntax, semantics and synchronization of communication and possible error recovery methods. Protocols may be implemented by hardware, software, or a combination of both.
Communicating systems use well-defined formats (protocol) for exchanging messages. Each message has an exact meaning intended to elicit a response from a range of possible responses pre-determined for that particular situation. [2]
Network protocols[edit]
This video is very technical, but one of the best I could find about network protocols. It may be helpful to review the OSI model prior to watching this.
Explain the importance of protocols[edit]
Without protocols and standards we wouldn't be able to achieve interoperability. That is, if my website used a totally different protocol for storing data (non-html) your browser would not be able to parse it, and you as a user wouldn't be able to understand it.
Protocols are important because they:
- Ensure data integrity (overall completeness, accuracy and consistency of data[3])
- Regulate flow control (In data communications, flow control is the process of managing the rate of data transmission between two nodes to prevent a fast sender from overwhelming a slow receiver.[4])
- Manage deadlock (A condition that occurs when two processes are each waiting for the other to complete before proceeding [5])
- Manage congestion (Network congestion in data networking is the reduced quality of service that occurs when a network node or link is carrying more data than it can handle.[6])
- Manage error checking (techniques that enable reliable delivery of digital data over unreliable communication channels.[7])
Why standards are important[edit]
Value of Creating Standards at W3C[8] W3C continues to evolve to provide the community a productive environment for creating Web standards. W3C standards:
- are created following a consensus-based decision process;
- consider aspects of accessibility, privacy, security, and internationalization;
- reflect the views of diverse industries and global stakeholders;
- balance speed, fairness, public accountability, and quality;
- benefit from Royalty-Free patent licensing commitments from participants;
- are stable (and W3C seeks to ensure their persistence at the published URI);
- benefit from wide review from groups inside and outside W3C;
- are downloadable at no cost;
- are maintained in a predictable fashion;
- are strengthened through interoperability testing;
Do you understand this topic?[edit]
You should be able to:
- Define protocol
- Explain the importance of networking protocols
- Explain the importance of standards on the web
Do you have an advanced understanding about this topic?[edit]
- Define data integrity
- Define source integrity
- Define flow control
- Define deadlock
- Define congestion management
- Define error correction
- Define error checking
See Also[edit]
Standards[edit]
These standards are used from the IB Computer Science Subject Guide[9]
- Explain the importance of protocols and standards on the web.
References[edit]
- ↑ http://www.flaticon.com/
- ↑ https://en.wikipedia.org/wiki/Communications_protocol
- ↑ https://www.techopedia.com/definition/27858/data-integrity-networking
- ↑ https://en.wikipedia.org/wiki/Flow_control_(data)
- ↑ https://www.webopedia.com/TERM/D/deadlock.html
- ↑ https://en.wikipedia.org/wiki/Network_congestion
- ↑ https://en.wikipedia.org/wiki/Error_detection_and_correction
- ↑ https://www.w3.org/standards/about.html
- ↑ IB Diploma Programme Computer science guide (first examinations 2014). Cardiff, Wales, United Kingdom: International Baccalaureate Organization. January 2012.