Computer Networks: Performance It can be measured in the following ways: Transit time : It is the time taken to travel a message from one device to another. Response time : It is defined as the time elapsed between enquiry and response. Other ways to measure performance are : Efficiency of software Capability of connected hardware Computer Networks: Reliability It decides the frequency at which network failure take place. Computer Networks: Security It refers to the protection of data from any unauthorised user or access.
|Published (Last):||20 February 2007|
|PDF File Size:||20.48 Mb|
|ePub File Size:||20.11 Mb|
|Price:||Free* [*Free Regsitration Required]|
Zulugal A computer network spanned inside a tutirialspoint and operated under single administrative system is generally termed as Local Area Network LAN.
Computer — Networking Advertisements. Motherboard has a computrr for internal network card where it is to be inserted. Network cables are required to provide network access. Backbone of MAN is high-capacity and high-speed fiber optics. The communication delay is very low. Networking technology has revolutionized the world and created a new arena for the overall development of every nation. What is a Computer Network With the help of networking, it has now become very simple to share the expensive resources including storage space, processor, fax, etc.
Computers and other devices are connected to a router using network cables. At huge level, internet works on Client-Server model. Metro Ethernet is a service which is provided by ISPs. PAN may include wireless computer keyboard and mouse, Bluetooth enabled headphones, wireless printers and TV remotes. LANs are composed of inexpensive networking and routing equipment. Connect a printer, scanner, or a fax machine to one computer within the network and let other computers of the network use the machines available over the network.
When a user requests a page using some web browser located on some Web Server anywhere in the world, the Web Server responds with the proper HTML page. Internet uses very high speed backbone of fiber optics. The major purpose of such interconnectivity is to establish a communication system in order to make the work easier. Ethernet is most widely employed LAN technology and uses Star topology, while Token-ring is rarely seen.
Generally, networks are distinguished based on their geographical span. This tutorial has been prepared for the computer science graduates to help them understand the basic to advanced concepts related to Data Communication and Computer Networking. The resources such as printers, file servers, scanners, and internet are easily sharable among computers. The physical connection between networked computing devices is established using either cable media or wireless media.
It is the largest network in existence on this planet. It mostly operates on private IP addresses and does not involve heavy routing. It may contains local servers serving file storage and other locally shared applications. With the help of networking, the communication system has now become highly efficient, frugal, and fast. A computer can be connected to another one via a serial port but if we need to connect many computers to produce a network, this serial connection will not work.
A network can be as small as distance between your mobile phone and its Bluetooth headphone and as large as the internet itself, covering the whole geographical world.
Create files and store them in one computer, access those files from the other computer s connected over the network. PAN has connectivity range up to 10 meters. After completing this tutorial you will find yourself at a moderate level of expertise in Data Communication and Computer Networking from where you can take yourself to next levels.
Network cards are of two types: It is normally used for a single business office or a residential apartment. Computer — Networking Wireless network card needs to be inserted into the motherboard, however no network cable is required to connect to the network.
The best-known computer network is the Internet. External network cards are of two types: In this section, we will discuss the different types of network. The solution is to use a central body to which other computers, printers, scanners, etc. A computer network is a system in which multiple computers are connected to each other to share information and resources.
Now-a-days router comes in wireless modes using which computers can be connected without any physical cable. A network nettworks networks is called an internetwork, or simply the internet. For example, MAN can help an organization to connect all of its offices in a city.
Wireless and USB based. Data communications refers to the transmission of this digital data between two or more computers and a computer network or data network is a telecommunications network that allows computers to exchange data.
Computer Networks If you are not well aware of these concepts then I will suggest to go through our short tutorial on Computer Fundamentals. Generally, tutorialwpoint networks are Wide Area Network. Internet enables its users to share and access enormous amount of information worldwide. It is equipped with holes called ports. Related Posts
Data Communication & Computer Network
Zulugal A computer network spanned inside a tutirialspoint and operated under single administrative system is generally termed as Local Area Network LAN. Computer — Networking Advertisements. Motherboard has a computrr for internal network card where it is to be inserted. Network cables are required to provide network access. Backbone of MAN is high-capacity and high-speed fiber optics.
Introduction To Computer Networks
Computer Networks Congestion Control What is congestion? A state occurring in network layer when the message traffic is so heavy that it slows down network response time. Effects of Congestion As delay increases, performance decreases. If delay increases, retransmission occurs, making situation worse. Congestion control algorithms Leaky Bucket Algorithm Let us consider an example to understand Imagine a bucket with a small hole in the bottom. No matter at what rate water enters the bucket, the outflow is at constant rate.
Computer - Networking
The most commonly used cable is Category 5 cable RJ Distributors A computer can be connected to another one via a serial port but if we need to connect many computers to produce a network, this serial connection will not work. The solution is to use a central body to which other computers, printers, scanners, etc. Router A router is a type of device which acts as the central point among computers and other devices that are a part of the network. It is equipped with holes called ports.