Network Performance in Computer Networks | Bangla Tutorial | Bandwidth | Throughput | Latency .
#networkperformance #bandwidth #delay #latency #throughput #datacommunication #computernetwork #networking #contentondemand Performance of a Network0:00 Introduction0:13 Network Performance One important issue in networking is the performance of the network0:56 Bandwidth and Throughput - Analogy1:36 Derivations from analogy2:13 Bandwidth Maximum amount of data that can be transmitted per second Formal Definition The bandwidth of a network is given by the number of bits that can transmitted over the network in a certain period of time.6:13 Latency (Delay)Computer Network Playlist : https://youtube.com/playlist?list=PLW... Network / Ad hoc Network Playlist : https://youtube.com/playlist?list=PLW... in Computer Network : • Repeater in Computer Network in bangla | B... Hub in computer network : • Hub In Computer Network in Bangla | Bangla... Components of Data Communication System : • Components of Data Communication System in... Switch in computer network : • Switch in Computer Network in Bangla | Ban... Hub vs. Switch : • Difference Between Hub And Switch | in Ban... Switching Techniques in Computer network: • Switching Techniques in Computer Network B... Performance of a network pertains to the measure of service quality of a network as perceived by the user. There are different ways to measure the performance of a network, depending upon the nature and design of the network. The characteristics that measure the performance of a network are : Bandwidth Throughput Latency (Delay) Bandwidth – Delay Product JitterBANDWIDTH One of the most essential conditions of a website’s performance is the amount of bandwidth allocated to the network. Bandwidth determines how rapidly the webserver is able to upload the requested information. While there are different factors to consider with respect to a site’s performance, bandwidth is every now and again the restricting element. Bandwidth is characterized as the measure of data or information that can be transmitted in a fixed measure of time. The term can be used in two different contexts with two distinctive estimating values. In the case of digital devices, the bandwidth is measured in bits per second(bps) or bytes per second. In the case of analogue devices, the bandwidth is measured in cycles per second, or Hertz (Hz). Bandwidth in Bits per Seconds: It refers to the number of bits per second that a channel, a link, or rather a network can transmit. For example, we can say the bandwidth of a Fast Ethernet network is a maximum of 100 Mbps, which means that the network can send 100 Mbps of data. Computer Network Playlist : https://youtube.com/playlist?list=PLW... Network / Ad hoc Network Playlist : https://youtube.com/playlist?list=PLW... in Computer Network : • Repeater in Computer Network in bangla | B... Hub in computer network : • Hub In Computer Network in Bangla | Bangla... Components of Data Communication System : • Components of Data Communication System in... Switch in computer network : • Switch in Computer Network in Bangla | Ban... Hub vs Switch : • Difference Between Hub And Switch | in Ban... THROUGHPUT Throughput is the number of messages successfully transmitted per unit time. It is controlled by available bandwidth, the available signal-to-noise ratio and hardware limitations. The maximum throughput of a network may be consequently higher than the actual throughput achieved in everyday consumption. The terms ‘throughput’ and ‘bandwidth’ are often thought of as the same, yet they are different. Bandwidth is the potential measurement of a link, whereas throughput is an actual measurement of how fast we can send data.LATENCY In a network, during the process of data communication, latency(also known as delay) is defined as the total time taken for a complete message to arrive at the destination, starting with the time when the first bit of the message is sent out from the source and ending with the time when the last bit of the message is delivered at the destination. The network connections where small delays occur are called “Low-Latency-Networks” and the network connections which suffer from long delays are known as “High-Latency-Networks”. In simpler terms: latency may be defined as the time required to successfully send a packet across a network. It is measured in many ways like round trip, one way, etc. It might be affected by any component in the chain which is utilized to vehiculate data, like workstations, WAN links, routers, LAN, servers and eventually may be limited for large networks, by the speed of light. Latency = Propagation Time + Transmission Time + Queuing Time + Processing DelayPropagation Time: It is the time required for a bit to travel from the source to the destination. Propagation time can be calculated as the ratio between the link length (distance) and the propagation speed over the communicating medium. For example, for an electric signal, propagation time is the time taken for the signal to travel through a wire. Propagation time = Distance / Propagation speed
