Explain which layer is closer to the user?
How do I find my ip address?
Where is tcp used?
Do you know maximum transfer unit, mtu?
Is port 80 secure?
If my ip address seems to be wrong, how can that be?
How names are translated (resolved) into ip address?
What is the use of interprocess communication?
How do I find out what program is using a port?
What is unix port?
Explain how does arp response the request?
What is the use of internet addresses?
what is the difference between server and database?