Networks

Networks

1. LAN

   • A LAN (local area network) is a network of computers within the same building, such as a school, home or business. A LAN is not necessarily connected to the internet.
   • Advantages:
     • Resource Sharing. Sharing of resources such as hard disk drives, DVD drives and Printers are made easy in Local Area Network. ... Software Sharing. ... Convenient Communication. ... Centralized Data. ... Improved Security. ... Internet Sharing. ... Computer Identification.
   • Disadvantages:
     • Implementation Cost. Even though LAN saves lots of money in terms of resource sharing, the initial cost involved in setting up the network is quite high. ... Policy Violations. ... Security. ... Maintenance. ... Area Coverage. ... Server Crashes. ... Malware Spreading.

2. WAN

   • Wide area network (WAN), a computer communications network that spans cities, countries, and the globe, generally using telephone lines and satellite links. The Internet connects multiple WANs; as its name suggests, it is a network of networks.
   • Advantages:
     • Area Coverage. WAN generally covers geographical areas of large proportions (1000kms or more than that). ... Centralized Data. ... Updated Files. ... Message Exchange. ... Increased Bandwidth. ... Assured Uptime. ... Security. ... Need of Security Solutions.
   • Disadvantages:
     • Security. Since WAN has more technologies combined to each other, it faces more security issues comparing to LAN and MAN. ... Need of Security Solutions. ... Installation Costs. ... Disconnection Problems. ... Troubleshooting Issues. ... Maintenance Issues.