Network Topology is the physical and logical arrangement of the nodes and links in a Computer Network. Nodes are the compute devices that connect to the network and links are the medium that connect the nodes. The network topology depicts that structure of the network along with the nodes and links. Network Topology application of…
Category: Computer Networks And Internet
Carrier Sense Multiple Access
CSMA (Carrier Sense Multiple Access) technology is used in LAN devices to prevent collision. Collision happens when devices connected in a network of collision domain transmits at the same time which will cause interruption of data flow between devices. Carrier Sense enables the network devices to listen for traffic and if the channel is free, transmission…
Switching
A switch in a Local Area Network (LAN) is a hardware device that connects multiple devices through a process known as Switching which happens at the Data Link Layer (Layer 2) of the OSI layer. Data Link layer is where a system starts placing data in the transmission medium (wired or wireless) by adding a…
Collision Domain
A LAN is network segment (wired or wireless) connecting multiple devices which becomes a network domain. If two devices are transmitting data at the same time in a network domain, they will collide and cause transmission failure due to the collusion of data. This network segment where all devices connecting to it and when transmitting…
Local Area Network (LAN)
A Local Area Network (LAN) is a network that connects multiple devices and users within a single building or a small campus or a home. LAN provides connectivity between devices and users, so that they can communicate between each other. LAN compromises devices like routers, switches, desktops all connected to a network which can b…
Link-Local Multicast Name Resolution (LLMNR)
Link-Local Multicast Name Resolution (LLMNR) is a Network Protocol that is used for Name resolution based on DNS packet format operating in Layer 2 (local link) specified in RFC 4795. It is a fall-back mechanism when DNS fails. The system which needs to resolve a hostname will send out a multicast query using LLMNR and the…
Simple Network Management Protocol (SNMP)
SNMP is a protocol that is used to manage and monitor devices in IP based networks. It is used for Network Management and Network Monitoring. It collects information about the devices in a hierarchical structured way using Management Information Base (MIB). SNMP consists of the three following components: Managed Devices are the devices like server,…
Network Basic Input/Output System (NetBIOS)
NetBIOS is Network Basic Input Output System which is an API used for communication between systems over LAN (Local Area Network) like Ethernet and Token Ring. It was initially developed for IBM’s machines to communicate on LAN and later on was mostly used in Windows environment for Server Message Block (SMB) for file sharing, printing…
Maximum Transmission Unit (MTU)
Maximum Transmission Unit (MTU) is the measurement of largest data packet that can be sent on a network between systems. Units used for MTU measured is bytes. MTU is property of data link layer. Some Data Link technology’s MTU are given below for your reference. Technology MTU Ethernet 1500 Wi Fi 2304 PPPoE 1492
Network Security
An enterprise comprises systems and applications. The systems are interconnected through a network. The systems, applications and network (Intranet) combined together becomes an infrastructure. The infrastructure is connected to the Internet for various purposes. The Internet is un-secured huge public network and the enterprise network is private secured network. There should be line of control…