Computer network • Computer network is an interconnected collection of autonomous computers. • Two computers are said to be interconnected if they are able to exchange information. Types of networks • Computer networks can be categorized by their size as well as their purpose. o PAN: Personal Area Network o LAN: Local Area Network o WAN: Wide Area Network o MAN: Metropolitan Area Network o SAN: Storage Area Network o CAN: Campus Area Network o WLAN: Wireless Local Area Network PAN- Personal Area
Wireless technology in education system of Pakistan Wireless Education System in Pakistan: Wireless networks are computer networks that does not uses cable/wire but work with wireless data connection between network nodes. Wireless network play an important role in education system of Pakistan. Wireless networking use radio waves instead of wires. For Example: cell phone networks, WLAN, laptop to internet etc are wireless networks. Wireless
IV. Advantages of Li-Fi over Wi-Fi Technology [9] Wi-Fi Li-Fi A. TRANSMISSION SECURITY: From the security point of view, Wi-Fi is less secure as radio waves can penetrate through walls. They can be traced. If someone has knowledge about this and has bad intentions, they can misuse it. This create a major security issue. Li-Fi is based on data transmission through visible lights. Li-Fi is secure as light rays cannot penetrate through walls. They cannot be misused and traced by other People, who
1. Wireless LAN: Wireless LAN (WLAN) stands for wireless local area network also referred as LAWN. LAWN stands for local area wireless network, is one in which user can connect to a local area network through a wireless connection using radio signals. This LAN provides wireless communication over a short distance area using radio or infrared signals. This can be build using any different wireless network protocols, most commonly either Wi-Fi or Bluetooth. The pros and cons of wireless LAN is as following
not provide any immunity against the nuisance caused by mobile phones due to loud speaker. 1.2.1 DISADVANTAGES: The person can make a call, send SMS, play games and listen songs while driving. The person cannot be contacted for some urgent information also. Nearly the mobile phone will be in Switch Off state. There will not be any notification that the user mobile has been jammed. 1.3 ADVANTAGES IN
cell phone networks, phone masts or base stations are
January 9 2015 The Shanghai Wireless Cafe serves as a restaurant as well as a hotspot for wireless users. In order for the cafe to maintain their competitive advantage, they have to consider how to use latest technology trends so as to keep the business profitable and popular. To this direction, this paper focuses on Web 2.0, Mobile and E-commerce technologies, analyzing the risks and benefits of each area and how each of them can contribute to the expand of Shanghai Wireless Café. Christos Panagiotou
There are many advantages of it such as, it saves time, that means you can buy all the things that you want only by click on mouse and then you can do your important work in a short time. Moreover, save fuel, in traditional shopping sometimes you will have to go for shopping
and to use them and their dealings over the network safe from penetration. One of these security solutions known as (PKI). 2. Public Key Infrastructure (PKI): PKI used to store information transmitted over the Internet, integrity and confidentiality, and to document the parties concerned electronic transactions, which is an integrated system consisting of software, programmers and hardware. It aims to know the identity of dealers across the network and encrypt information so that others
Phones, Laptops, Smart watches, Tablets and other wireless devices.Data communication and networks are driving in the capacity of wireless devices. Wi-Fi is more popular today but now new technology Light fidelity(Li-Fi) is establish in 2011 by German Physist that is 100 time faster than Wi-Fi.InLi-Filight has a medium of communication .Hence ,it bandwidth is in Tera Hertz range as compare to Giga Hertz of Wi-Fi. It is based on optical wireless communication. Optical wirless communication is based