network layering
Storyboard Text
- Why is there packet switching ?
- How much data is typically sent over the internet per minute?
- What are these layers used for?
- Packet switching is used to optimize the use of the channel capacity available in digital telecommunication networks, such as computer networks, and minimize the transmission latency
- What is the size of a packet?
- Over 2.5 quintillion bytes of data created every single day and its only going to grow from there. Its estimated that 1.7MB of data will be created every second foe every person on earth
- What are protocols used for?
- Application layer encodes/decodes the message in a form that is understood by the sender and the recipient. Transport layer breaks down the message into small chunks (packets). Each packet is given a packet number and the total number of packets. Network layer adds the sender’s IP address and that of the recipient. The network then knows where to send the message, and where it came from. Data link layer enables the transfer of packets between nodes on a network, and between one network and another.
- How do packets pass through network layers?
- How big the packet is (overall length of packet; as this is a 16-bit field, the maximum size of an IP packet is 65,535 bytes, but in practice most packets are around 1,500 bytes)
- Communication protocols allow different network devices to communicate with each other. They are used in both analog and digital communications and can be used for important processes, ranging from transferring files between devices to accessing the internet.
- The Internet works by chopping data into chunks called packets. Each packet then moves through the network in a series of hops. Each packet hops to a local Internet service provider (ISP), a company that offers access to the network
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