![]() ![]() The router is smartest and most complicated out of these three. It creates connections dynamically and provides information only to the requesting port Switches work similarly like Hubs but in a more efficient manner. ![]() It broadcast all data to every port which may cause serious security and reliability concern Hub is least expensive, least intelligent and least complicated of the three. ![]() Q #7) What is the difference between Hub, Switch, and Router? This layer provides services for email, file transfer, etc. #Computer networks pdf notes in hindi softwareBoth end-user and application layer interacts with the software application. G) Application Layer (Layer 7): This is the last layer of the OSI Reference Model and is the one that is close to the end-user. Layer 6 transforms the data into the form in which the application layer accepts. It establishes, coordinates, exchange and terminates the connections between local and remote applications.į) Presentation Layer (Layer 6): It is also called as “Syntax Layer”. It keeps track of transmission and sends the segments again if the transmission fails.Į) Session Layer (Layer 5): This layer manages and controls the connections between computers. This variable-length data sequence is also known as “Datagrams”.ĭ) Transport Layer (Layer 4): It transfers data between nodes and also provides acknowledgment of successful data transmission. This layer also detects the errors that occurred at Layer 1.Ĭ) Network Layer (Layer 3): This layer transfers variable length data sequence from one node to another node in the same network. Example: Ethernet.ī) Data Link Layer (Layer 2): At the Data Link layer, data packets are encoded and decoded into bits and it provides a node to node data transfer. Q #6) What are the layers in OSI Reference Models? Describe each layer briefly.Īnswer: Given below are the seven layers of OSI Reference Models:Ī) Physical Layer (Layer 1): It converts data bits into electrical impulses or radio signals. It also helps to understand the relationship between networks and defines the process of communication in a network. Routers send the information in terms of data packets and when these data packets are forwarded from one router to another router then the router reads the network address in the packets and identifies the destination network.Īnswer: Open System Interconnection, the name itself suggests that it is a reference model that defines how applications can communicate with each other over a networking system. ![]() It is used to transfer information from the source to the destination. Let’s consider that in a network there are 2 computers, 2 printers, and a server are connected, then we can say that there are five nodes on the network.Īnswer: Network topology is a physical layout of the computer network and it defines how the computers, devices, cables, etc are connected to each other.Īnswer: The router is a network device that connects two or more network segments. It is a network component that is used to send, receive and forward the electronic information.Ī device connected to a network is also termed as Node. A node is a point where a connection is established. In a network, nodes are used to connect two or more networks.Īnswer: Two or more computers are connected directly by an optical fiber or any other cable. Here we go with the basic networking questions and answers.Īnswer: Network is defined as a set of devices connected to each other using a physical transmission medium.įor Example, A computer network is a group of computers connected with each other to communicate and share information and resources like hardware, data, and software. ![]()
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