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Connecting to the Internet

Connecting to the Internet. Connection Technologies and IP Addressing. Asymmetric vs. Symmetric. Asymmetric Download speed > Upload speed Technology limitation Symmetric Download speed = upload speed. Fiber. Google Only a few cities 1000Mbps (1Gbps) symmetric fiber.google.com.

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Connecting to the Internet

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  1. Connecting to the Internet Connection Technologies and IP Addressing

  2. Asymmetric vs. Symmetric • Asymmetric • Download speed > Upload speed • Technology limitation • Symmetric • Download speed = upload speed

  3. Fiber • Google • Only a few cities • 1000Mbps (1Gbps) symmetric • fiber.google.com

  4. Speedtest • http://www.speedtest.net

  5. IP Addresses

  6. Packets traveling over a network have a header that includes a source IP address and a destination IP address.

  7. Every computer or device on a network has to have an IP address

  8. An IP address is more like a phone number than a street address. (334) 123-4567 192.168.101.45

  9. IP addresses are a 32-bit binary number… 11000000101010000110010100101101 … that can be written in a 4-part number 192.168.101.45

  10. Value of each Octet can be 0 thru 255 28 = 256

  11. Network Managers can assignSTATIC IP addresses to some or all computers on a network

  12. IP addresses can be assigned dynamically by a server or router Dynamic Host Control Protocol (DHCP)

  13. Every Website has an IP address cnn.com 157.166.248.10 206.16.212.91 al.gov

  14. URL is a user friendly reference to an IP address on the internet

  15. When you type in a URL, a domain name server (DNS) matches that URL to the IP address to let your computer find the correct website.

  16. Finding a site’s IP ADdress • http://www.domaintools.com

  17. If the network you are on is connected to the internet, it has an public IP address visible to the internet. Private Network INTERNET

  18. Public IP addresses are assigned by your ISP and may be static or dynamic Static IPs are better for when you need remote access, such as gaming or remote desktop. http://whatismyipaddress.com

  19. Private IP Addresses cannot be assigned to computers on the internet, and computers on the internet cannot communicate directly with a private ip address. • 10.0.0.0 – 10.255.255.255 • 172.16.0.0 – 17.31.255.255 • 192.168.0.0 – 192.168.255.255

  20. A device that does network address translation (NAT) coordinates communication between your private ip address and a website or another computer or network on the internet.

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