Network Articles - Page 76 of 79

All these three protocols provide a mechanism for flow control. Read through this article to get a basic overview of Stop and Wait, Go-Back-N, and Selective Repeat protocols. Stop and Wait Protocol It is the most fundamental flow control strategy. The transmitter sends one frame at a time to the receiver using this method. The transmitter will come to a halt and wait for the receiver to respond. The interval between sending a message and receiving an acknowledgment is known as the sender's waiting time, and the sender is idle during this time. After receiving an acknowledgment (ACK), the ... Read More

Static Routing or Non-Adaptive Routing follows user-defined routing. Here, the routing table is not changed until the network administrator changes it. Static Routing uses simple routing algorithms and provides more security than dynamic routing. Dynamic Routing or Adaptive Routing, as the name suggests, changes the routing table if there is any change in the network topology. During network change, dynamic routing sends a signal to router, recalculates the routes and sends the updated routing information. Read through this article to find out how Static Routing differs from Dynamic Routing. What is Static Routing? One of the essential techniques ... Read More

What is Topology?Network Topology is the way network links and nodes are connected with each other. The physical signal transmission medium is referred to as network topology. On the other hand, "logical network topology" refers to how the data flows through a network among the connected devices, regardless of their physical link.In this article, we will compare and contrast the different features of two network topologies − Ring Topology and Mesh Topology. Read through this article to find out how Ring Topology differs from Mesh Topology.What is Mesh Topology?A mesh network is a sort of local network structure that is ... Read More

Private Keys and Public Keys terms are used in cryptography. These keys are used to encrypt/decrypt sensitive data. Read through this article to find out more about private and public keys and how they are different from each other.What is Private Key?The private key is used in both encryption as well as decryption. This key is shared between the sender and receiver of the encrypted sensitive information. The private key is also called "symmetric" because it is shared by both parties. Private key cryptography is faster than public-key cryptography mechanism.A private key is generally a lengthy, non-guessable sequence of bits ... Read More

Optical fibre and Coaxial cables, both are different types of guided media cables. Optical fibre is made up of plastic and glass and is used to transmits signals in form of light or optics whereas coaxial cable is made using plastic and copper wires and is used to transmits signals in form of electric signals.The following are some of the important differences between Optical fibre and Coaxial cable.Sr. No.KeyOptical FibreCoaxial Cable1Transmission TypeOptical Fibre transmits data/signals in the form of light.The coaxial cable transmits data/signals in the form of electrical signals.2MaterialOptical fibre is made using plastic and glass.Coaxial cable is prepared ... Read More

Both Network OS and Distributed OS work on multiple systems/nodes. The main difference between a network operating system and a distributed operating system is the way they handle resources and communication between devices. A network operating system is primarily concerned with managing resources and communication within a single network, while a distributed operating system is designed to manage resources and communication across multiple networks. Read this tutorial to find out more about Network OS and Distributed OS and how they are different from each other. What is Network OS? A Network OS is a type of operating system that is ... Read More

Nmap is a free open source tool, employed to discover hosts and services on a computer network by sending packets and analyzing the retrieved responses. Nmap offers some features for probing computer networks, including host discovery and service and operating system detection.Nmap can provide further information on targets, including reverse DNS names, device types, and MAC addresses.Host discovery – Identifying hosts on a network. For example, listing the hosts that respond to TCP and/or ICMP requests or have a particular port open.Port scanning – Enumerating the open ports on target hosts.OS detection – Determining the operating system and hardware characteristics ... Read More

If we think an advance level of anti-virus has been installed on our computer, and we are fully secure as it performs a full system threat infection scan regularly. However, there may be instances where the scan did not detect any threat, or you cannot perform a scan. In these scenarios, we recommend that to notice the aggressive methods or symptoms to detect threats or attack.If it has been noticed an unwarranted presence of PowerShell in the task manager then our computer is definitely under attack.If a connection found to be established on port 4444 or 445 without your cognizance ... Read More

In a computer network, the network service runs a software in each of the computers that are part of the network. In Linux System this network software uses a protocol called TCP or UDP along with port number. TCP is known as transmission control protocol and UDP is known as user datagram protocol. In this article we will see how to watch the ports are sockets which are running on this protocols on a real time basis.List of Open PortsAs a first step we look for the open ports that are available in the system. Bye open we mean the ... Read More

Orthogonal frequency division multiple access (OFDMA) is a multi-user version of digital data modulation scheme OFDM (orthogonal frequency division multiplexing). In OFDM, a single stream of data is divided into several separate sub-streams for transmission via multiple channels. OFDM uses the principle of frequency division multiplexing (FDM), where the available bandwidth is divided into a set of sub-streams having separate frequency bands.In OFDMA, multiple access is achieved by assignment of different subsets of subcarriers to individual stations. This permits transmission to go on simultaneously at lower data rate from several stations.The stations assigned to a given subcarrier alternate between sending ... Read More