Please help with the following Network Communication questions!!! Thanks!!! 1. H
ID: 3742857 • Letter: P
Question
Please help with the following Network Communication questions!!! Thanks!!!
1. How many and what are the layers of the OSI model?
a. For each layer, briefly describe what services should be offered by an implementing stack.
2. In data transmissions over long distances, what dominates the time it takes for a recipient to fully receive a message for
a. very small messages (what and why)?
b. very large messages (what and why)?
3. Write an equation to convert MBps to Mbps.
4. Give two short reasons why the OSI model languished in favor of the layers used more conventionally today (by the IETF, IEEE, etc.)?
5. What is the “thin-waist” of the Internet, and why has it been so important?
Explanation / Answer
[1]
Open System Interconnection (OSI) total having seven layers.
Layer 1 - Physical
Layer 2 - Data Link
Layer 3 - Network
Layer 4 - Transport
Layer 5 - Session
Layer 6 - Presentation
Layer 7 - Application
From 1-4 layers are lower layers that concern with moving data around and From 5-7 layers are upper layers that involve in application-level data.
[3]
Mbps = Megabits per Second
MBps = Megabytes per Second
1 Byte = 8 bits
Mb / 8 = MB
MB * 8 = Mb
[4]
[a] Unrelated information on the OSI model on the Internet.
[b] Normal find/search will reveal enough material to keep you hooked up to the computer for days.