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      <title>CSM331 Tutorial by pying cheok</title>
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      <language>en-us</language>
      <pubDate>2021-04-05 04:41:35 UTC</pubDate>
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         <title>Q2.  Briefly describe one network protocol, one network standard and one standards organization.</title>
         <author>pyingcheok</author>
         <link>https://padlet.com/pyingcheok/5o4c1ta2gt03fcce/wish/1382063467</link>
         <description><![CDATA[<div><br>Network protocols defined the rules for sending and receiving information between the computers on a network. It determines what, when and how the communication takes place. One example of network protocol is Hypertext Transfer Protocol (HTTP). HTTP is one of the most common used protocols. It is an application layer protocol which enables web-based application to communicate and exchange data. HTTP will determine how data is transmitted over the Internet and how the web servers and browser respond to the command given. HTTP is a TCP/IP based protocol. HTTP works on a client-server model in which web browser acts as clients that makes the request and server is the one respond to the request. When there is a request, the client will send the request to web server and web server will send a response back to the client after process the request. One important thing about HTTP protocol is that it is a stateless protocol, meaning to say that client and server only aware of each other just during the current request.<br><br></div><div>Network standard is an agreed-upon rules and it provides guidelines for manufactures, vendors, users and etc. Network standard is used in network communication to ensure the data travels to the correct destination. The most commonly known network standard adopted by the Institute of Electrical and Electronics Engineers (IEEE) are the 802 standards such as 802.3, 802.8, 802.11 and many more. IEEE 802 is the network standard used for local area networks (LAN), personal area network (PAN), wide area network (WAN) and metropolitan area networks (MAN). To be more specific, IEEE 802.3 is a set of network standards that define Ethernet-based networks. In 802.3, Ethernet is referring to the physical cabling and the data is transmitted through Carrier Sense Multiple Access/ Collision Detection (CSMA/CD). This transmission method means that only 1 device can transmit the data at one time while the other device has to wait until the transmission is completed. IEEE 802.3 is most commonly used in LAN.<br><br></div><div>One example of standard organization is ISO, the International Organization for Standardization. ISO is not an acronym, but it means equal based on Greek work “ISOS”. It is a multinational body established in 1947 that develops and establish the International Standards. Note that almost three-fourths of the countries in the world are represented in ISO. Thus, ISO is the world’s largest developer of international standards for a wide variety of products and services. ISO introduced the Open Systems Interconnection (OSI) reference model in the late 1970s that covers all aspects of network communications. This model was an attempt to standardise the actual protocol that people used to communicate through computers. However, OSI model is still lack of success due to several reasons such as some layers in OSI were never fully defined.<br><br></div>]]></description>
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         <pubDate>2021-04-05 04:51:11 UTC</pubDate>
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