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

Computers on a network are linked through cables, telephone lines, radio waves, satellites, or infrared light beams.

Types of Network There are many types of Networks (WWAN, WLAN, etc.)

Nevertheless, the three main types of network are LAN, WAN, and MAN

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.

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.

What is MAN MAN stands for Metropolitan Area Networking

This type of network connects computers together on a common network in the same city.

What is Topology Topology is the geometric arrangement of a computer system or network

The common topologies are a bus, star and a ring

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)

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

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

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

What does WiFi stand for? It stands for Wireless Fidelity

It allows people to access the internet or the network

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

What is city wide WiFi Free Wireless network that everyone can access: Starbucks, planes, trains

It is faster and easier to access

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

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

What hardware needed for WiFi Wired Network

Wireless Access Point

Wireless Adapter

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.

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.

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.

Thank You for Listening!

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