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Network and WiFi

Network and WiFi. By: Clara-Hannah S., Amelia H., and Margot d’I . What is a Network. A network is the link between two or more computers, which allows them to share information, exchange files, and communicate electronically

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Network and WiFi

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  1. Network and WiFi By: Clara-Hannah S., Amelia H., and Margot d’I.

  2. What is a Network • A network is the link between two or more computers, which allows them to share information, exchange files, and communicate electronically • Computers on a network are linked through cables, telephone lines, radio waves, satellites, or infrared light beams.

  3. Types of Network • There are many types of Networks (WWAN, WLAN, etc.) • Nevertheless, the three main types of network are LAN, WAN, and MAN

  4. What is LAN? • LAN stands for Local Area Network • This network is used throughout a relatively small area. • It is generally limited to a geographic area such as a writing lab, school, or building.

  5. What is Wan? • WAN stands for Wide Area Networking • This network links networks in larger geographic areas such as a country in Europe and another in South America • Special transoceanic cabling or satellite uplinks may be used to connect this type of global network.

  6. What is MAN • MAN stands for Metropolitan Area Networking • This type of network connects computers together on a common network in the same city.

  7. What is Topology • Topology is the geometric arrangement of a computer system or network • The common topologies are a bus, star and a ring

  8. What is Protocol • The protocol is the set of rules and signals that computers on a same network use to communicate • The most popular protocol for LAN is called Ethernet • Another popular LAN protocol on PCs is the IMB (token-ring network)

  9. What is architecture • The architecture of a network is its classification and its organization • Examples of architecture is: peer-to-peer or client/server architecture

  10. What is network software? • A computer network, or data network, is a network of telecommunications. It allows computers to exchange data. In computer networks, network computing devices pass data to each other along data connections

  11. What is network security? • The Network security is a policy made by a network administrator to prevent unauthorized access to networks • To prevent a computer from getting a virus, there are antiviruses for the computer, but for the network, there are routers and firewalls • A firewall is a set of related programs that protects the resources of a private network from users from other networks • A router is small physical device that joins multiple networks together

  12. What does WiFi stand for? • It stands for Wireless Fidelity • It allows people to access the internet or the network

  13. What are 3G/4G/LTE • 3G: is the third generation of mobile telephony technology • 4G: is the fourth generation of mobile telephony technology, it is more efficient • LTE: Long Term Evolution marketed as 4G LTE

  14. What is city wide WiFi • Free Wireless network that everyone can access: Starbucks, planes, trains • It is faster and easier to access

  15. What is campus wide Wifi • It is a wireless WiFi that is spread throughout a whole school campus (LAN)

  16. What are the advantages and disadvantages of WiFi • There are advantages and disadvantages of having and using WiFi • Advantages: one can have free signal or at a very low fee almost everywhere • Disadvantages: There are many security issues

  17. What hardware needed for WiFi • Wired Network • Wireless Access Point • Wireless Adapter

  18. What is Data Security Risk • Something called the IT security ensures the security of your computer; when in deficit, your computer is not secured. • Data codes can be encrypted, leading to a virus.

  19. What is “Range” and “Interference” • Range is the speed at which the network travels • Interference is when a Wi-Fi receptor interacts with another Wi-Fi receptor. Overcapacity can also cause interference.

  20. What are the advantages and disadvantages of installing a school network? • There are many advantages and disadvantages to installing a school network such as : • Advantages: file sharing, sharing devices, sharing internet access, security, speed • Disadvantages: expensive to install, requires administrative time, servers fail, cables may break, security and compliance.

  21. Thank You for Listening!

  22. Sources • http://wifi-aztechno.ucoz.ua/32dcf6851b.jpg • http://siliconangle.com/files/2012/09/wi-fi-network-signal-300x300.png • http://upload.wikimedia.org/wikipedia/commons/0/00/Virtual_Private_Network_overview.svg

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