Found 1627 Articles for Computer Network

In data communications, cut-through switching is a method of switching data frame or data packets, where the switching device (bridge or switch) forwards the frames or packets as soon as the destination address is available without waiting for the rest of the data to arrive.Working PrincipleCut-through switching is used in packet switching systems. In packet-switching, the message is divided into a number of units called packets that are individually routed from the source to the destination. There is no need to establish a dedicated circuit for communication, since it is a connectionless network switching technique.In cut − through switching, when ... Read More

A bridge is a network device that connects multiple LANs (local area networks) together to form a larger LAN. The process of aggregating networks is called network bridging. A bridge connects the different components so that they appear as parts of a single network. Bridges operate at the data link layer of the OSI model and hence also referred as Layer 2 switches.The following diagram shows a bridges connecting two LANs −Uses of BridgeBridges connects two or more different LANs that has a similar protocol and provides communication between the devices (nodes) in them.By joining multiple LANs, bridges help in ... Read More

Virtual Local Area Networks or Virtual LANs (VLANs) are a logical group of computers that appear to be on the same LAN irrespective of the configuration of the underlying physical network. Network administrators partition the networks to match the functional requirements of the VLANs so that each VLAN comprise of a subset of ports on a single or multiple switches or bridges. This allows computers and devices in a VLAN to communicate in the simulated environment as if it is a separate LAN.Features of VLANsA VLAN forms sub-network grouping together devices on separate physical LANs.VLAN's help the network manager to ... Read More

Network switching is the process of forwarding data frames or packets from one port to another leading to data transmission from source to destination. Data link layer is the second layer of the Open System Interconnections (OSI) model whose function is to divide the stream of bits from physical layer into data frames and transmit the frames according to switching requirements. Switching in data link layer is done by network devices called bridges.BridgesA data link layer bridge connects multiple LANs (local area networks) together to form a larger LAN. This process of aggregating networks is called network bridging. A bridge ... Read More

Both Site-to-Site VPN and Remote Access VPN are types of virtual private networks used primarily for transferring data and accessing a machine from a remote location under a secure network which acts as a private network across the machines.In this article, we will differentiate Site-to-Site VPN and Remote Access VPN based on their features. Let's start with an overview of VPN and the role it plays.What is a VPN?A Virtual Private Network (VPN) connects users' computers to a private network across a public network, enabling them to receive and send data as if they were physically attached to the private ... Read More

Both Synchronous and Asynchronous Transmission are types of serial data transmission techniques in which data is transmitted between the sender and the receiver based on a clock pulse used for synchronization.Read through this article to find out more about synchronous and asynchronous transmission and how they are different from each other.What is Synchronous Transmission?Synchronous transmission is a technique of data transmission in which a sender transmits a continuous stream of data along with periodic timing signals supplied by an external clocking system in order to ensure that the transmitter and the receiver are in sync.In Synchronous transmission, data is transferred ... Read More

Both Virtual Circuits and Datagram Networks are the types of connection services which are used for transmission of information from a sender to a receiver. The most basic difference between the two is that the virtual circuits are connection oriented services that require resources like buffers, CPU, bandwidth, etc., for a data transfer session, while the datagram networks are connectionless services where no such resources are required for data transmission. There are many other key differences between virtual circuits and datagram networks, which we will discuss in this article. What are Virtual Circuits? Virtual Circuit is a connection oriented service ... Read More

Both Client-Server and Peer-to-Peer networks transfer data from a source to a destination with minimal loss in transmission. Both these networks establish a communication channel through which data transmission takes place, however the channel remains dedicated in case of a Client-Server network, which is not the case with Peer-to-Peer networks.Read through this article to find out how client-server networks differ from peer-to-peer networks.What is a Client-Server Network?The client-server paradigm is a network process communication structure that connects service requestors, clients, and providers. A network or the Internet is used to connect the client and the server.The client-server approach, which also ... Read More

Circuit switching and Message switching are both telecommunication techniques that are used to transfer data from a source to a destination with minimal loss in transmission.Circuit switching is a way of constructing a dedicated network in which two network nodes create a dedicated communications channel before connecting. In message switching, the source and destination nodes are not connected; the intermediate nodes are in charge of data transfer.Read through this article to find out more about Circuit switching and Message switching and how they are different from each other.What is Circuit Switching?In circuit switching, networks create dedicated transmission channels. While other ... Read More

As we know that both DES and AES are the type of symmetric key block cipher which are used in such encryption where only one key (a secret key) is used to both encrypt and decrypt electronic information. The entities communicating via symmetric encryption must exchange the key so that it can be used in the decryption process. Now on the basis of characteristics we can distinguish between AES and DES.Following are the important differences between DES and AES ciphers.Sr. No.KeyDES CipherAES Cipher1DefinitionData Encryption Standard also known as DES is a symmetric key block cipher that was introduced in the ... Read More