What are the different types of osi layer?
What is a firewall?
What is a subnet mask?
How do tcp sockets work?
How names are translated (resolved) into ip address?
Explain how can we detect that the other end of a tcp connection has crashed? Can we use "keepalives" for this?
Does ip change with wifi?
Explain difference between static and dynamic ip?
What is reverse ip lookup?
What is bidirectional firewall rule?
What is a private ip address?
Define ip address?
How do I know if my ftp port 21 is blocked?
Is port 80 open on my network?
What is the protocol used in Network layer?