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Network and WiFi By: Clara-Hannah S., Amelia H., and Margot d’I.
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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.
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Types of Network There are many types of Networks (WWAN, WLAN, etc.)
Nevertheless, the three main types of network are LAN, WAN, and MAN
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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.
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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.
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What is MAN MAN stands for Metropolitan Area Networking
This type of network connects computers together on a common network in the same city.
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What is Topology Topology is the geometric arrangement of a computer system or network
The common topologies are a bus, star and a ring
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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)
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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
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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
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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
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What does WiFi stand for? It stands for Wireless Fidelity
It allows people to access the internet or the network
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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
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What is city wide WiFi Free Wireless network that everyone can access: Starbucks, planes, trains
It is faster and easier to access
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What is campus wide Wifi It is a wireless WiFi that is spread throughout a whole school campus (LAN)
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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
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What hardware needed for WiFi Wired Network
Wireless Access Point
Wireless Adapter
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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.
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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.
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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.
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Thank You for Listening!
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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