{"id":170,"date":"2020-11-28T11:22:43","date_gmt":"2020-11-28T16:22:43","guid":{"rendered":"https:\/\/www.alpharithms.com\/?p=170"},"modified":"2021-07-20T22:45:11","modified_gmt":"2021-07-21T02:45:11","slug":"network-protocol-layers","status":"publish","type":"post","link":"https:\/\/www.alpharithms.com\/network-protocol-layers-432211\/","title":{"rendered":"Network Protocol Layers: A Powerful Model for Networked Services"},"content":{"rendered":"

Network protocol layering is a system of service hierarchy used in networked computer communication. Each layer offers a set of guaranteed services to the layer above such that higher-level abstractions can be built while making assumptions about lower-level transport services.<\/p>\n

These services allow ensuring a certain level of operability such that higher-layered protocols can take the lower-level features<\/a> for granted. Another benefit is that developers of layer-specific applications can focus on their primary goals rather than wrestling with the functionality of other layers.<\/p>\n

Introduction<\/h2>\n

For example, in TCP\/IP communication, the transport layer offers a Reliable Data Protocol (RDP) service. This allows developers to focus on the logic of networked applications rather than the delivery of generated data.<\/p>\n

For example, web browsers can use HTTP protocol\u2014an application layer protocol\u2014to ensure communication between clients and hosts are facilitated without data loss. In other words; the developers of Mozilla Firefox only have to focus on what data is sent from users to websites and not\u00a0how<\/em> that data is sent.<\/p>\n

Different Layer Models<\/h2>\n

The two most popular network layer models as the OSI Stack and TCP\/IP Stack. These two models are very similar but have some differences that are worth noting.<\/p>\n

TCP\/IP Protocol Stack<\/h3>\n
    \n
  1. Application<\/li>\n
  2. Transport<\/li>\n
  3. Network<\/li>\n
  4. Link<\/li>\n
  5. Physical<\/li>\n<\/ol>\n

    OSI Protocol Stack<\/h3>\n
      \n
    1. Application<\/li>\n
    2. Presentation<\/li>\n
    3. Session<\/li>\n
    4. Transport<\/li>\n
    5. Network<\/li>\n
    6. Link<\/li>\n
    7. Physical<\/li>\n<\/ol>\n

      Network Protocol Layers<\/h2>\n
      \"network
      The TCP\/IP Network Protocol Layers, examples, and common data naming<\/figcaption><\/figure>\n

      Each network layer is responsible for maintaining a collection of protocols. These protocols make certain guarantees such that upper layers can focus on more abstract pursuits. For example, the application layer uses HTTP protocol, which uses the transport layers TCP protocol, which uses the network layer’s IP protocol all to ensure a website loads when you type the address into your web browser. This layered system helps from having to reinvent the wheel for higher-level applications.<\/p>\n

      Application Layer<\/h3>\n

      Application layer protocols provide services to networked applications like web browsers, video streaming services, and email clients. Among the many services, the most popular\/easily-recognized are as follows:<\/p>\n