Introduction to network terminology

Question 1

What is an interface?

Answer 1

An interface defines how to communicate with an entity. It’s a specification of it’s methods and properties.

Question 2

What does WAN stands for?

Answer 2

Wide area network. Large dispersed networks and usually means the internet, as a whole

Question 3

What is a port?

Answer 3

It’s an address in a single machine, tied to a software. So there will be a piece of software running in a port.

Question 4

What is a firewall? How does it usually work?

Answer 4

It’s a program that decides whether traffic coming or going from a device should be allowed. Usually it works by creating rules for which type of traffic is acceptable on which ports.

Question 5

What is the purpose of a MAC address?

Answer 5

To identify a device in a LAN.

Question 6

What is a network interface?

Answer 6

Communicating points for a computer. Each interface is associated with a physical or virtual networking device.