DNS helps resolve this issue by converting the domain names of websites into numerical IP addresses.The Remote Connection features allows you to connect to a device, with a single click.
IPs are also dynamic, making it all the more necessary to map domain names to IP addresses. Hosts are identified based on their IP addresses, but memorizing an IP address is difficult due to its complexity. DNS works on a client-server model, and uses a distributed database over a hierarchy of name servers. The DNS protocol helps in translating or mapping host names to IP addresses. Computers with DHCP cannot be used as servers, as their IPs change over time.Tracking internet activity becomes tedious, as the same device can have multiple IP addresses over a period of time.Reuse of IP addresses, reducing the total number of IP addresses required.Seamless addition of new clients into a network.Centralized management of IP addresses.DHCP lets network admins distribute IP addresses from a central point and automatically send a new IP address when a device is plugged in from a different place in the network. In an IP network, every device connecting to the internet requires a unique IP. DHCP: Dynamic Host Configuration ProtocolĭHCP is a communication protocol that enables network administrators to automate the assignment of IP addresses in a network. The following are some of the most prominent protocols used in network communication. Now that you know how the OSI model works, you can dive straight into the classification of protocols. Though some say the OSI model is now redundant and less significant than the Transmission Control Protocol (TCP)/IP network model, there are still references to the OSI model even today as the model's structure helps to frame discussions of protocols and contrast various technologies. Defines optical, electrical, and mechanical characteristics.Interfaces between network medium and devices.Layer 1: Physical layer network protocols Detects and corrects packet transmit errors.Layer 2: Data link layer network protocols Renders flow and congestion control to prevent network resource depletion.Routes packets according to unique network device addresses.Renders reliable and sequential packet delivery through error recovery and flow control mechanisms.Manages end-to-end message delivery in networks.Layer 4: Transport layer network protocols Establishes and terminates sessions between users.Encodes and decodes data, encrypts and decrypts data, and compresses and decompresses data.Masks the differences in data formats between dissimilar systems.Layer 6: Presentation layer network protocols Provides standard services such as virtual terminal, file, and job transfer and operations.One or more network protocols operate at each layer in the communication exchange.įollowing are the detailed descriptions of the functioning of network protocols in each layer of the OSI model: Layer 7: Application layer network protocols Network protocols divide the communication process into discrete tasks across every layer of the OSI model. The upper layers deal with application issues, and the lower layers deal with data transport issues. The seven layers in the OSI model can be divided into two groups: upper layers, including layers 7, 6, and 5, and lower layers, including layers 4, 3, 2, and 1. To put this into context, here is a representation of the communication process between two network devices following the OSI model: All the layers are self-contained, and the tasks assigned to them can be executed independently. A task or group of tasks is assigned to each of these 7 layers. The OSI model splits the communication process between two network devices into 7 layers. Considered the primary architectural model for internet working communications, the majority of network protocols used today are structurally based on the OSI model. To understand the nuances of network protocols, it's imperative to know about the Open Systems Interconnection (OSI) model first. The OSI model: How network protocols work In other words, network protocols can be equated to languages that two devices must understand for seamless communication of information, regardless of their infrastructure and design disparities. Network protocols are a set of rules, conventions, and data structures that dictate how devices exchange data across networks.
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