A typical LAN shows a small group of computers connected to each other. The connecting media are often an Ethernet cable that can provide an internet speed from 10 Mbps up to 1 GBPS. Figure 2.9 - Local Area Network Quick Bites Around 100 to even 1000 computers can be connected in a LAN. Personal Area Network or PAN You may have multiple interconnected devices with you. Different devices, such as laptop, smartphones, and tablet, are often connected using a wireless medium.
In the past, there were a lot of difficulties to communicate with people all over the world. Data were transmitted from only two devices that are connected by cables. Thus, network was invented and gives a great benefit to different societies all over the world. However, the existence of networks makes the communication even easier and faster. Therefore, data are being transmitted through huge region all over the world, which is wireless connection.
Another definition of V LAN is that it allows a single switch fabric divided into multiple small broadcast domains. (Micrel, 2004) The figure shows that the members of V LAN can physically connected to the same or different switches. The LAN switch used as a transmission carrier so that the members of VLAN can communicate with low latency and high speed rate. Membership control, topology independence and high-speed LAN internal connection technology provide a number of advantages for
2.1 Wireless LAN Infrastructure Devices Proper WLAN infrastructure design requires understanding and deploying QoS (Quality of Service) on the wireless network to ensure end-to-end data / video/voice quality on the entire network. Like a traditional wired LAN, WLAN is a grouping of computers and peripheral devices that share a common communications backbone. As per the name itself, a WLAN allows users to connect to the LAN through radio transmission. The below mentioned are the most common components of a WLAN. Access point - The access point is an external device which is used for linking a wireless network to a wired LAN.
CHAPTER 1 INTRODUCTION 1.1 Introduction 1.1.1 What is MANET? The term MANET (Mobile Ad-hoc Network) refers to a multi hop packet based wireless network consists set of mobile nodes used to transfer the related information and move without using any system structure. It is able to change the networks and doesn’t need any structure to maintain the data. It uses wireless connections to connect to various networks because they are mobile. The connections may be done through Wi-Fi connection, or another medium, such as a cellular or satellite transmission.
Computer Networking: Demand of Today's Competitive Corporate World Nowadays, computer networking is one of the most sought-after career fields. In today's corporate environment, computer network has emerged as an essential tool. In simple terms, computer networking involves connecting two or more computers with an intent to share resources. Whether, one wants to share resources in a business, across corporation or internationally, networking makes it easier to perform this task just at the click of a mouse. On the matter of fact that computer network has made the lifestyle of many very smooth and easier, there are certain downfalls of networking.
The LANs interconnect the various devices in the building while WAN enables communication between different buildings and other resources such as Cloud, remote control devices or rooms. This allows facility managers to monitor and control the systems remotely using mobile or desktop devices over the internet. While the devices and systems within the building communicate locally, they, in most cases, do not require the internet, but the WAN does, for the system to connect to the external
A WAN spans a large physical distance. The Internet is the largest WAN, spanning the Earth. A WAN is a geographically-dispersed collection of LANs. A network device called a router connects LANs to a WAN. In IP networking, the router maintains both a LAN address and a WAN address.
Some of the examples are school, computer lab, and office. Wireless computing is a rapidly emerging technology providing users the network connectivity without being tethered off of a wired network. Wireless local area networks are mainly developed to provide high bandwidth to users in a limited area. WLANs may be formed by a single cell, with a single access point. Most installations will be formed by several cells , where the access points are connected through some kind of backbone(called distribution system or DS )typically ETHERNET, and in some cases known as wireless itself.
Computer system consists of any software and various peripheral devices such as a printers, scanners or routers that are necessary to make the computer function. Every computer requires an operating system. The computers that are connected to the system can operate independently. They have the ability of communicating with other external devices and computers. Computer system is a combination of electronic hardware and software.