connecting to the internet
DESCRIPTION
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. - PowerPoint PPT PresentationTRANSCRIPT
Connection Technologies and IP Addressing
CONNECTING TO THE INTERNET
ASYMMETRIC VS. SYMMETRIC• Asymmetric
• Download speed > Upload speed
• Technology limitation
• Symmetric
• Download speed = upload speed
FIBER
• Only a few cities
• 1000Mbps (1Gbps) symmetric
• fiber.google.com
IP ADDRESSES
Packets traveling over a network have a header that includes a source IP address and a destination IP address.
Every computer or device on a network has to have an IP address
An IP address is more like a phone number than a street address.
(334) 123-4567
192.168.101.45
IP addresses are a 32-bit binary number…
11000000101010000110010100101101
… that can be written in a 4-part number
192.168.101.45
Value of each Octet can be 0 thru 255
28 = 256
Network Managers can assign STATIC IP addresses to some or all computers on a network
Dynamic Host Control Protocol (DHCP)
IP addresses can be assigned dynamically by a server or router
EVERY WEBSITE HAS AN IP ADDRESS
206.16.212.91
157.166.248.10cnn.com
al.gov
URL IS A USER FRIENDLY REFERENCE TO AN IP ADDRESS ON THE INTERNET
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.
If the network you are on is connected to the internet, it has an public IP address visible to the internet.
INTERNET
Private Network
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
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
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.