Fitness First System Administrator Interview Questions and Answers

IP address is a unique numerical identifier assigned to devices connected to a network.

• IP stands for Internet Protocol

• It consists of a series of numbers separated by dots

• It is used to identify devices on a network and facilitate communication

• There are two types of IP addresses - IPv4 and IPv6

• IPv4 addresses are 32-bit and IPv6 addresses are 128-bit

Port number is a 16-bit number used to identify specific processes to which data is sent over the internet.

• Port numbers range from 0 to 65535

• Well-known port numbers are reserved for specific services (e.g. HTTP uses port 80)

• Ports can be either TCP or UDP

• Firewalls can block or allow traffic based on port numbers