Wireless Networks

Wireless Networks

1. What type of device do you need in your computer to connect to a wireless network?

   • NICs (Network Interface Card)
     • Wireless Network Card
       • Need correct drivers

2. What is a Wireless Router?

   • A device that performs the functions of a router but also includes the functions of a wireless access point.
     • It is commonly used to provide access to the Internet or a computer network
       • It does not require a wired link, as the connection is made wirelessly, via radio waves.

3. Wireless Router

   • Connects to Modem
     • Modem connects to telephone lines
   • Acts as an access point for the LAN network
   • Forwards data packets between computer networks
   • Directs data to different devices

4. How would you use a wireless router to setup a wireless network?

   • A wireless hub is connected to the network and transmits and receives data from the computers.

5. What are the advantages and disadvantages of wireless networks?

   • Advantages
     • No need for cabling.
     • Computers can be used anywhere within range of the signal.
       • E.g.laptops can be moved around and still use the network.
   • Disadvantages
     • Data transmission speeds can be slow.
     • Data signals can only be received within a limited range.
     • Security may be a problem as people may be able to pick up the data signals outside your premises
       • Careful setting up of the network is needed.
     • If the server/connection goes down, the current thing you are working on could lose data

6. Radio waves can be used to transmit data from one computer to another.

7. Hotspot

   • Offers Internet access over a wireless local area network (WLAN) through the use of a router connected to a link to an Internet service provider
     • Usually done through the use of Wi-Fi

8. Cloud

   • Large groups of remote servers are networked to allow centralized data storage and online access to computer services or resources

9. Mobile Network

   • A wireless network distributed over land areas called cells

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