data link layer in OSI model

What is the Role of the Data Link layer in the OSI model? Data Link Layer and the OSI model: The data link layer is the second layer in the OSI model.  A data link layer uses the services of the underlying physical layer and provides services to the network layer.  When a network layer has to deliver a user …

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hybrid topology

What is Hybrid Topology in computer networks? The network topology is a logical and physical arrangement of the connected computers or devices.  There are five basic types of network topologies we have described. As the name suggests, the hybrid topology is the combination of one or more basic network topologies.  While planning for hybrid topology, we need to select a …

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network topology and its types

Learn what is network topology and its types in Computer Network. In a computer network, the computing devices connected to each other over a shared or dedicated medium. The network topology is the way devices connect. E.g a device may connect to another device via a direct LAN cable or it may connect via another intermediate device, such as a …

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ip address classes

What are the IP address classes? The IP address classes are the classification or grouping of IP addresses. Each IP address class has a network part and a host part. The network part decides how much network possible with a type of IP address class and the host part decides how many hosts each network can have. Initially, the purpose was …

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csma protocol

What is CSMA Protocol? The CSMA’s full form is carrier sense multiple access. It is a MAC layer protocol in a computer network (as per OSI Model), for accessing an underlying shared communication channel. e.g a LAN. In another tutorial, we have described one more common channel access protocol, Aloha. CAMA differs from ALOHA in the way it works.  It …

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aloha protocol

What is Aloha protocol – Pure Aloha – Slotted Aloha?  In the computer networks, the devices access the common underlying shared medium (e.g LAN cable ) to communicate.  Aloha protocol provides an access control mechanism, for shared channel/medium. For example, a local area network connects multiple computers to each other over a common physical network, using wires, hubs, switches, routers, …

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