1.Networking

network

a series of connected devices ranging from 2 to a billion devices. They can include laptops, phones, tablets, security cameras, etc.

internet

a huge network composed of a series of smaller networks.

two ways to identify a device on a network

IP address and MAC address

IP address

address: a series of 8 numbers in 4 octets to identify devices on a network. It can be used by multiple devices on a network, but not simultaneously.

Public IP address

IP addresses that identify devices on the internet

Private IP addresses

IP addresses that identify devices on the same network

8

How many numbers in an IP address?

8

how many octets in an IP address?

IP address

What is 192.168.1.1 an example of?

A device with a private and public IP address

Device	IP address	Address type
DESKTOP-KJE57FD	192.168.1.77	Private
DESKTOP-KJE57FD	86.157.52.21	Public

What is the table above an example of?

1-3 values from 0-255

each octet in an IP address can contain __ values ranging from _ to

IPv4

type of IP address that can store up to 4 billion addresses

IPv6

type of IP address that can handle up to 3 trillion addresses

IPv4

What type of IP address does the one below fall under?

192.168.1.1

MAC address

Unique identification composed of 12 numbers in pairs separated by semicolons assigned to devices in the factories of origin

organization of origin

What do the first 6 numbers of a MAC address represent?

Spoofing

a cyberattack where an attacker mimics a MAC address to access a network.

Spoofing

What type of cyberattack involves a threat actor bypassing a firewall from a trusted network by pretending to use the administrator’s MAC address?

name

In comparison to a human, an IP address is the equivalent of a person’s __ because it can be changed

fingerprint

In comparison to a human, a MAC address represents a person’s __ because it can’t be changed

Ping

network tool to measure the connection between two or devices. It measures the speed of ICMP packets traveling through a network.

ping IP address/url

syntax to measure ping

measures ping

What does the code below do?

ping 192.168.1.254