Does router have ip address?
In which layer SMTP is used?
What is the core naming mechanism, domain name system (dns)?
What list of calls are used to establish a tcp and/or udp socket connection?
Can isp block ports?
What port number is 8080?
What is the differance between HTTP and TCP/IP Protocols?
What is private ip and public ip?
How do I know if my ftp port 21 is blocked?
How do I restore my ip address?
How to get a client system IP address
Can two ip addresses use same port?
What is a connection gateway?
What is a firewall?
Explain which layer is closer to the user?