Network Fundamentals

Question 1

What is a Network?

Answer 1

Networks are simply things that are connected, in terms of computing, a network can be formed between 2 - 1,000,000,000 devices

Question 2

What is the Internet?

Answer 2

The Internet is actually a massive network thats formed by a bunch of smaller networks within itself

Question 3

What are networks that make up the Internet?

Answer 3

Private Networks are the smaller networks that actually form the internet, while the public networks are the networks that connect the private networks to each other

Question 4

What are the two forms of Identification for a device?

Answer 4

A device has an IP address which stands for Internet Protocol Address, these address are used for identifying a Host on a Network for a time. While the MAC address which stands for Media Access Control, can be considered a serial number that acts as a unique address for a device

Question 5

Whats an IP address look like?

Answer 5

10.10.109.20

Question 6

Whats a MAC address look like?

Answer 6

c2:h1:23:j9:o0:mm

Question 7

Whats the Ping command do?

Answer 7

Ping is a very fundamental network tool thats meant to determine the connection between devices, also Ping can only be done on devices that are connected to a network

Question 8

Whats LAN?

Answer 8

LAN stands for Local Area Network

Question 9

Whats topology in reference to computing?

Answer 9

Topology in computing is referred to the structure of different networks, examples include: star, ring, and bus topology

Question 10

Whats Subnetting?

Answer 10

Subnetting is the process of cutting bigger networks into smaller networks, this is primarily done to section off different networks mostly off purpose of the allotted network

Question 11

Whats ARP Protocol?

Answer 11

ARP Protocol stands for Address Resolution Protocol an its used when devices identify themselves on a network; It allows devices on a network to associate their MAC address with an IP address on the same network

Question 12

What makes up ARP Protocol?

Answer 12

ARP Protocol is broken into two types of message types: ARP Request and ARP Responses

Question 13

ARP Request

Answer 13

An ARP Request can be sent by any device, once sent, a copy of that response is sent to every device on the network, it would like: “Hi. My MAC is MAC, and I’m looking for IP. Anyone have it?”

Question 14

ARP Response

Answer 14

An ARP Response is sent back by the device that has a matching IP address to the one requested by the device making the ARP request, the response would look like: “Hi. I have that IP address, this is my MAC as well.”

Question 15

What are Frames and Packets?

Answer 15

Frames and Packets are small pieces of data that when forming together make a larger piece of information

Question 16

Whats Port Forwarding?

Answer 16

Port Forwarding is an essential component in connecting applications and services to the internet, without Port Forwarding applications and services are only available within the same network